-
Transmembrane Proteins
Welcome to the Humbio Core Chem bootcamp online! The following concepts will be covered in this tutorial:
o The hydrophobic effect and transmembrane protein structure
o Synthesis of transmembrane proteins
o Single-pass transmembrane proteins: Receptor tyrosine kinases
o Multi-pass transmembrane proteins: K+ ion channels
At 8:22, answer the following question:
1) What is the reason sodium ions can't pass through a potassium ion channel?
a) The energy barrier for interaction of sodium with the pore is too high.
b) Sodium is too large to interact with all eight oxygens in the pore.
c) Sodium is too small to interact with all eight oxygens in the pore.
For more practice, see worksheet:
https://sites.google.com/site/humbiocore/test/transmembrane-proteins
published: 05 Jul 2011
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MEMBRANE PROTEINS - Types and Functions
Membrane proteins are those proteins that are either a part of or interact with biological membranes. They make up around a third of human proteins and give difference kinds of membranes their unique properties. They help with both facilitated diffusion and active transport, connect cells together, participate in signal transduction, and act as markers for cell identification. Proteins carry out most of the specific functions of membranes, so the amount/types of proteins vary between different membranes. Membranes can be up to 75% protein by mass!
Membrane proteins can be integral/intrinsic or peripheral/extrinsic. Integral membrane proteins are a permanent part of the membrane, while peripheral proteins are only transiently associated with either the membrane or integral proteins, with hy...
published: 08 Sep 2019
-
Transmembrane protein | Transmembrane region in Protein sequence | TMHMM
A transmembrane protein (TP), also known as intact protein, is a type of integral membrane protein that spans the entirety of the cell membrane. Many transmembrane proteins function as gateways to permit the transport of specific substances across the membrane. They frequently undergo significant conformational changes to move a substance through the membrane. They are usually highly hydrophobic and aggregate and precipitate in water. They require detergents or nonpolar solvents for extraction, although some of them (beta-barrels) can be also extracted using denaturing agents.
Transmembrane proteins play an important role in molecular transport, signal transduction, energy utilization and other basic physiological processes.
For example, many natural transmembrane proteins act as channels ...
published: 23 Dec 2020
-
Transmembrane protein
Transmembrane protein or integral membrane protein -This lecture explains about the transmembrane protein structure and functions. It explains the role of alpha helix and beta barrel shaped proteins in cell membrane.
For more information, log on to-
http://www.shomusbiology.com/
Get Shomu's Biology DVD set here-
http://www.shomusbiology.com/dvd-store/
Download the study materials here-
http://shomusbiology.com/bio-materials.html
Remember Shomu’s Biology is created to spread the knowledge of life science and biology by sharing all this free biology lectures video and animation presented by Suman Bhattacharjee in YouTube. All these tutorials are brought to you for free. Please subscribe to our channel so that we can grow together. You can check for any of the following services from Shomu’s ...
published: 23 Jun 2015
-
Transmembrane proteins: Rules and Assays for Topology
A summary of the rules and assays that are used to determine the topology of transmembrane proteins
published: 21 Nov 2017
-
Inside the Cell Membrane
Explore the parts of the cell membrane with The Amoeba Sisters! Video discusses phospholipid bilayer, cholesterol, peripheral proteins, integral proteins, glycoproteins, and glycolipids - as well as why the surface area to volume ratio is so important in cells. Expand for table of contents.
Contents:
00:00 Intro
1:25 Membrane controls what goes in and out of cell
1:40 Importance of surface area to volume ratio
3:31 Cell Theory
4:00 Fluid Mosaic Model
4:28 Phospholipid and phospholipid bilayer
5:58 Cholesterol
6:23 Proteins (peripheral and integral)
7:43 Glycoproteins and glycolipids (carbohydrates bound to proteins and lipids)
Additional Vocabulary:
-Amphiphilic
-Hydrophilic
-Hydrophobic
The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's ...
published: 27 Feb 2018
-
Transmembrane enzyme linked receptor | pharmacology #shorts
Transmembrane enzyme linked receptors pharmacology #shorts
published: 19 Mar 2021
-
Transmembrane enzyme linked receptors
published: 22 Jun 2021
-
Transmembrane Potential
published: 11 Feb 2016
-
Robert Lefkowitz (Duke University) Part 1: Seven Transmembrane Receptors
https://www.ibiology.org/cell-biology/g-protein-coupled-receptors/#part-1
In the first segment of the lecture, the history of discovery in the field of seven transmembrane receptor research over the past forty years is reviewed. Highlights include overcoming initial skepticism that the receptors even existed; isolating the receptors as discrete biochemical entities and demonstrating their ligand binding and functional activating properties; discovering their seven transmembrane spanning arrangement and homology with the visual light receptor rhodopsin, thereby leading to the discovery of the wider seven transmembrane receptor superfamily; determination of the structure function relationships of the receptors by mutagenesis and chimeric receptor construction; discovery of constitutively a...
published: 23 Mar 2010
9:45
Transmembrane Proteins
Welcome to the Humbio Core Chem bootcamp online! The following concepts will be covered in this tutorial:
o The hydrophobic effect and transmembrane protein str...
Welcome to the Humbio Core Chem bootcamp online! The following concepts will be covered in this tutorial:
o The hydrophobic effect and transmembrane protein structure
o Synthesis of transmembrane proteins
o Single-pass transmembrane proteins: Receptor tyrosine kinases
o Multi-pass transmembrane proteins: K+ ion channels
At 8:22, answer the following question:
1) What is the reason sodium ions can't pass through a potassium ion channel?
a) The energy barrier for interaction of sodium with the pore is too high.
b) Sodium is too large to interact with all eight oxygens in the pore.
c) Sodium is too small to interact with all eight oxygens in the pore.
For more practice, see worksheet:
https://sites.google.com/site/humbiocore/test/transmembrane-proteins
https://wn.com/Transmembrane_Proteins
Welcome to the Humbio Core Chem bootcamp online! The following concepts will be covered in this tutorial:
o The hydrophobic effect and transmembrane protein structure
o Synthesis of transmembrane proteins
o Single-pass transmembrane proteins: Receptor tyrosine kinases
o Multi-pass transmembrane proteins: K+ ion channels
At 8:22, answer the following question:
1) What is the reason sodium ions can't pass through a potassium ion channel?
a) The energy barrier for interaction of sodium with the pore is too high.
b) Sodium is too large to interact with all eight oxygens in the pore.
c) Sodium is too small to interact with all eight oxygens in the pore.
For more practice, see worksheet:
https://sites.google.com/site/humbiocore/test/transmembrane-proteins
- published: 05 Jul 2011
- views: 42598
5:27
MEMBRANE PROTEINS - Types and Functions
Membrane proteins are those proteins that are either a part of or interact with biological membranes. They make up around a third of human proteins and give dif...
Membrane proteins are those proteins that are either a part of or interact with biological membranes. They make up around a third of human proteins and give difference kinds of membranes their unique properties. They help with both facilitated diffusion and active transport, connect cells together, participate in signal transduction, and act as markers for cell identification. Proteins carry out most of the specific functions of membranes, so the amount/types of proteins vary between different membranes. Membranes can be up to 75% protein by mass!
Membrane proteins can be integral/intrinsic or peripheral/extrinsic. Integral membrane proteins are a permanent part of the membrane, while peripheral proteins are only transiently associated with either the membrane or integral proteins, with hydrophobic, electrostatic, or other non-covalent interactions.
There are several different kinds of integral proteins. Integral monotopic proteins are attached to only one of the two leaflets of phospholipids making up the membrane and don’t span across. There are also transmembrane proteins and lipid-anchored proteins. Transmembrane proteins are those that span the lipid bilayer, and can be bitopic, spanning across the membrane once, or polytopic, spanning across it more than once. Lipid-anchored proteins are those which are covalently attached to lipids embedded in the lipid bilayer. For example, GPI, or glycosylphosphatidylinositol, is a glycolipid that gets attached to a protein’s C-terminus during post-translational modification. It acts as an anchor for proteins to the outer leaflet of the plasma membrane. Both integral and peripheral proteins can be post-translationally modified (e.g. fatty acids, diacylglycerol, prenyl chains, or GPI).
Recall that cellular membranes are made up of a phospholipid bilayer, which consists of two leaflets of phospholipids. These phospholipids have polar heads which are hydrophilic, or water-loving, and non-polar fatty acyl tails that are hydrophobic, or water-hating. Polar substances like to interact with other polar substances and non-polar substances hang out with other non-polar substances. This really attests to the power of hydrogen bonding. Water molecules want to interact so badly that anything non-polar getting in the way of their hydrogen bonding results in decreased entropy. The result is what’s called the hydrophobic effect. Hence, phospholipids in water will spontaneously form lipid bilayers – minimizes contact between polar and nonpolar molecules, maximizes hydrogen bonding, and maximizes entropy.
This is also why transmembrane proteins are amphipathic – which means that they have regions which are hydrophilic and regions that are hydrophobic. The hydrophilic regions are exposed to water on either side of the membrane, while the hydrophobic bits are happily interacting with the hydrophobic tails of lipid molecules in the interior of the bilayer. As a result, transmembrane proteins are stuck permanently into the cell membrane and are very hard to isolate. To get them out, you need to add a detergent, which is amphipathic and will disrupt the lipid bilayer.
There are two basic types of transmembrane proteins: α-helical proteins, and β-barrel proteins. Note that while helix bundle proteins are found in all types of biological membranes, beta-barrel proteins are only found in the outer membranes of gram-negative bacteria, mitochondria, and chloroplasts – evidence for the endosymbiotic theory.
Transmembrane protein structure can be predicted using a hydropathy plot - hydrophobicity index on Y axis, amino acid number on X axis. The amino acids making up a protein are localized according to polarity within its final structure in such a way that the polar amino acids face the outside aqueous solutions and the nonpolar amino acids are adjacent to the lipid bilayer.
Transmembrane proteins can be classified by topology - based on the position of N- and C-termini, as well as start-transfer and stop-transfer sequences. Type I is a single transmembrane pass with the N-terminus on the extracellular side of the membrane. Type 2 is also a single transmembrane pass but the N-terminus is on the cytosolic side of the membrane.
Often, transmembrane proteins function as gateways, allowing specific substances to pass across the membrane. They can undergo conformational changes as they do this. They might participate in facilitated or active transport. Facilitated transport is spontaneous passive transport of substa nces via transmembrane proteins. Active transport requires energy and may be necessary, for instance, if a substance is being carried across the membrane against its chemical or electrical gradient.
In animal cells, most transmembrane proteins are glycosylated. These sugar residues are always present on the noncytosolic leaflet of the membrane. As a result, the cell surface is covered in carbohydrates, which form what’s called the “cell coat”.
https://wn.com/Membrane_Proteins_Types_And_Functions
Membrane proteins are those proteins that are either a part of or interact with biological membranes. They make up around a third of human proteins and give difference kinds of membranes their unique properties. They help with both facilitated diffusion and active transport, connect cells together, participate in signal transduction, and act as markers for cell identification. Proteins carry out most of the specific functions of membranes, so the amount/types of proteins vary between different membranes. Membranes can be up to 75% protein by mass!
Membrane proteins can be integral/intrinsic or peripheral/extrinsic. Integral membrane proteins are a permanent part of the membrane, while peripheral proteins are only transiently associated with either the membrane or integral proteins, with hydrophobic, electrostatic, or other non-covalent interactions.
There are several different kinds of integral proteins. Integral monotopic proteins are attached to only one of the two leaflets of phospholipids making up the membrane and don’t span across. There are also transmembrane proteins and lipid-anchored proteins. Transmembrane proteins are those that span the lipid bilayer, and can be bitopic, spanning across the membrane once, or polytopic, spanning across it more than once. Lipid-anchored proteins are those which are covalently attached to lipids embedded in the lipid bilayer. For example, GPI, or glycosylphosphatidylinositol, is a glycolipid that gets attached to a protein’s C-terminus during post-translational modification. It acts as an anchor for proteins to the outer leaflet of the plasma membrane. Both integral and peripheral proteins can be post-translationally modified (e.g. fatty acids, diacylglycerol, prenyl chains, or GPI).
Recall that cellular membranes are made up of a phospholipid bilayer, which consists of two leaflets of phospholipids. These phospholipids have polar heads which are hydrophilic, or water-loving, and non-polar fatty acyl tails that are hydrophobic, or water-hating. Polar substances like to interact with other polar substances and non-polar substances hang out with other non-polar substances. This really attests to the power of hydrogen bonding. Water molecules want to interact so badly that anything non-polar getting in the way of their hydrogen bonding results in decreased entropy. The result is what’s called the hydrophobic effect. Hence, phospholipids in water will spontaneously form lipid bilayers – minimizes contact between polar and nonpolar molecules, maximizes hydrogen bonding, and maximizes entropy.
This is also why transmembrane proteins are amphipathic – which means that they have regions which are hydrophilic and regions that are hydrophobic. The hydrophilic regions are exposed to water on either side of the membrane, while the hydrophobic bits are happily interacting with the hydrophobic tails of lipid molecules in the interior of the bilayer. As a result, transmembrane proteins are stuck permanently into the cell membrane and are very hard to isolate. To get them out, you need to add a detergent, which is amphipathic and will disrupt the lipid bilayer.
There are two basic types of transmembrane proteins: α-helical proteins, and β-barrel proteins. Note that while helix bundle proteins are found in all types of biological membranes, beta-barrel proteins are only found in the outer membranes of gram-negative bacteria, mitochondria, and chloroplasts – evidence for the endosymbiotic theory.
Transmembrane protein structure can be predicted using a hydropathy plot - hydrophobicity index on Y axis, amino acid number on X axis. The amino acids making up a protein are localized according to polarity within its final structure in such a way that the polar amino acids face the outside aqueous solutions and the nonpolar amino acids are adjacent to the lipid bilayer.
Transmembrane proteins can be classified by topology - based on the position of N- and C-termini, as well as start-transfer and stop-transfer sequences. Type I is a single transmembrane pass with the N-terminus on the extracellular side of the membrane. Type 2 is also a single transmembrane pass but the N-terminus is on the cytosolic side of the membrane.
Often, transmembrane proteins function as gateways, allowing specific substances to pass across the membrane. They can undergo conformational changes as they do this. They might participate in facilitated or active transport. Facilitated transport is spontaneous passive transport of substa nces via transmembrane proteins. Active transport requires energy and may be necessary, for instance, if a substance is being carried across the membrane against its chemical or electrical gradient.
In animal cells, most transmembrane proteins are glycosylated. These sugar residues are always present on the noncytosolic leaflet of the membrane. As a result, the cell surface is covered in carbohydrates, which form what’s called the “cell coat”.
- published: 08 Sep 2019
- views: 317103
10:10
Transmembrane protein | Transmembrane region in Protein sequence | TMHMM
A transmembrane protein (TP), also known as intact protein, is a type of integral membrane protein that spans the entirety of the cell membrane. Many transmembr...
A transmembrane protein (TP), also known as intact protein, is a type of integral membrane protein that spans the entirety of the cell membrane. Many transmembrane proteins function as gateways to permit the transport of specific substances across the membrane. They frequently undergo significant conformational changes to move a substance through the membrane. They are usually highly hydrophobic and aggregate and precipitate in water. They require detergents or nonpolar solvents for extraction, although some of them (beta-barrels) can be also extracted using denaturing agents.
Transmembrane proteins play an important role in molecular transport, signal transduction, energy utilization and other basic physiological processes.
For example, many natural transmembrane proteins act as channels for specific substances to pass through the biofilm, and some transmembrane proteins receive or transmit cellular signals. The strong attachment of the transmembrane protein to the biofilm is due to the hydrophobic interaction of the membrane lipid with the hydrophobic region of the protein.
#genomewidestudy
#transmembrane
#transmembranehelices
https://wn.com/Transmembrane_Protein_|_Transmembrane_Region_In_Protein_Sequence_|_Tmhmm
A transmembrane protein (TP), also known as intact protein, is a type of integral membrane protein that spans the entirety of the cell membrane. Many transmembrane proteins function as gateways to permit the transport of specific substances across the membrane. They frequently undergo significant conformational changes to move a substance through the membrane. They are usually highly hydrophobic and aggregate and precipitate in water. They require detergents or nonpolar solvents for extraction, although some of them (beta-barrels) can be also extracted using denaturing agents.
Transmembrane proteins play an important role in molecular transport, signal transduction, energy utilization and other basic physiological processes.
For example, many natural transmembrane proteins act as channels for specific substances to pass through the biofilm, and some transmembrane proteins receive or transmit cellular signals. The strong attachment of the transmembrane protein to the biofilm is due to the hydrophobic interaction of the membrane lipid with the hydrophobic region of the protein.
#genomewidestudy
#transmembrane
#transmembranehelices
- published: 23 Dec 2020
- views: 3526
19:01
Transmembrane protein
Transmembrane protein or integral membrane protein -This lecture explains about the transmembrane protein structure and functions. It explains the role of alpha...
Transmembrane protein or integral membrane protein -This lecture explains about the transmembrane protein structure and functions. It explains the role of alpha helix and beta barrel shaped proteins in cell membrane.
For more information, log on to-
http://www.shomusbiology.com/
Get Shomu's Biology DVD set here-
http://www.shomusbiology.com/dvd-store/
Download the study materials here-
http://shomusbiology.com/bio-materials.html
Remember Shomu’s Biology is created to spread the knowledge of life science and biology by sharing all this free biology lectures video and animation presented by Suman Bhattacharjee in YouTube. All these tutorials are brought to you for free. Please subscribe to our channel so that we can grow together. You can check for any of the following services from Shomu’s Biology-
Buy Shomu’s Biology lecture DVD set- www.shomusbiology.com/dvd-store
Shomu’s Biology assignment services – www.shomusbiology.com/assignment -help
Join Online coaching for CSIR NET exam – www.shomusbiology.com/net-coaching
We are social. Find us on different sites here-
Our Website – www.shomusbiology.com
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Youtube- https://www.youtube.com/user/TheFunsuman
Thank you for watching
https://wn.com/Transmembrane_Protein
Transmembrane protein or integral membrane protein -This lecture explains about the transmembrane protein structure and functions. It explains the role of alpha helix and beta barrel shaped proteins in cell membrane.
For more information, log on to-
http://www.shomusbiology.com/
Get Shomu's Biology DVD set here-
http://www.shomusbiology.com/dvd-store/
Download the study materials here-
http://shomusbiology.com/bio-materials.html
Remember Shomu’s Biology is created to spread the knowledge of life science and biology by sharing all this free biology lectures video and animation presented by Suman Bhattacharjee in YouTube. All these tutorials are brought to you for free. Please subscribe to our channel so that we can grow together. You can check for any of the following services from Shomu’s Biology-
Buy Shomu’s Biology lecture DVD set- www.shomusbiology.com/dvd-store
Shomu’s Biology assignment services – www.shomusbiology.com/assignment -help
Join Online coaching for CSIR NET exam – www.shomusbiology.com/net-coaching
We are social. Find us on different sites here-
Our Website – www.shomusbiology.com
Facebook page- https://www.facebook.com/ShomusBiology/
Twitter - https://twitter.com/shomusbiology
SlideShare- www.slideshare.net/shomusbiology
Google plus- https://plus.google.com/113648584982732129198
LinkedIn - https://www.linkedin.com/in/suman-bhattacharjee-2a051661
Youtube- https://www.youtube.com/user/TheFunsuman
Thank you for watching
- published: 23 Jun 2015
- views: 22302
20:15
Transmembrane proteins: Rules and Assays for Topology
A summary of the rules and assays that are used to determine the topology of transmembrane proteins
A summary of the rules and assays that are used to determine the topology of transmembrane proteins
https://wn.com/Transmembrane_Proteins_Rules_And_Assays_For_Topology
A summary of the rules and assays that are used to determine the topology of transmembrane proteins
- published: 21 Nov 2017
- views: 10203
9:09
Inside the Cell Membrane
Explore the parts of the cell membrane with The Amoeba Sisters! Video discusses phospholipid bilayer, cholesterol, peripheral proteins, integral proteins, glyco...
Explore the parts of the cell membrane with The Amoeba Sisters! Video discusses phospholipid bilayer, cholesterol, peripheral proteins, integral proteins, glycoproteins, and glycolipids - as well as why the surface area to volume ratio is so important in cells. Expand for table of contents.
Contents:
00:00 Intro
1:25 Membrane controls what goes in and out of cell
1:40 Importance of surface area to volume ratio
3:31 Cell Theory
4:00 Fluid Mosaic Model
4:28 Phospholipid and phospholipid bilayer
5:58 Cholesterol
6:23 Proteins (peripheral and integral)
7:43 Glycoproteins and glycolipids (carbohydrates bound to proteins and lipids)
Additional Vocabulary:
-Amphiphilic
-Hydrophilic
-Hydrophobic
The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit:
http://www.amoebasisters.com/about-us.html
⭐We have a menu of our resources that complement our videos! Visit https://docs.google.com/spreadsheets/d/1b3kmAzFEjWgoMKCrkeNCKFYunWk04IuLY93jI4OY0gY/edit?usp=sharing
We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook: https://openstax.org/details/books/biology
Support Us? https://www.amoebasisters.com/support-us
Our Resources:
Biology Playlist: https://www.youtube.com/playlist?list=PLwL0Myd7Dk1F0iQPGrjehze3eDpco1eVz
GIFs: https://www.amoebasisters.com/gifs.html
Handouts: https://www.amoebasisters.com/handouts.html
Comics: https://www.amoebasisters.com/parameciumparlorcomics
Unlectured Series: https://www.amoebasisters.com/unlectured
Connect with us!
Website: https://www.AmoebaSisters.com
Twitter: http://www.twitter.com/AmoebaSisters
Facebook: http://www.facebook.com/AmoebaSisters
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Instagram: https://www.instagram.com/amoebasistersofficial/
Visit our Redbubble store at https://www.amoebasisters.com/store
TIPS FOR VIEWING EDU YOUTUBE VIDEOS:
Want to learn tips for viewing edu YouTube videos including changing the speed, language, viewing the transcript, etc? https://www.amoebasisters.com/pinkys-ed-tech-favorites/10-youtube-tips-from-an-edu-youtuber-duo
MUSIC:
Music in this video is listed free to use/no attribution required from the YouTube audio library https://www.youtube.com/audiolibrary/music?feature=blog
COMMUNITY:
We take pride in our AWESOME community, and we welcome feedback and discussion. However, please remember that this is an education channel. See YouTube's community guidelines and how YouTube handles comments that are reported by the community. We also reserve the right to remove comments.
TRANSLATIONS:
Hindi Subtitles Credit: Alisha Aggarwal
Audio has been dubbed into Hindi, Portuguese, and Spanish using an artificial voice via https://aloud.area120.google.com to increase accessibility. You can change the audio track language in the Settings menu.
While we don't allow dubbing of our videos, we do gladly accept subtitle translations from our community. Some translated subtitles on our videos were translated by the community using YouTube's community-contributed subtitle feature. After the feature was discontinued by YouTube, we have another option for submitting translated subtitles here: https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles We want to thank our amazing community for the generosity of their time in continuing to create translated subtitles. If you have a concern about community contributed contributions, please contact us.
https://wn.com/Inside_The_Cell_Membrane
Explore the parts of the cell membrane with The Amoeba Sisters! Video discusses phospholipid bilayer, cholesterol, peripheral proteins, integral proteins, glycoproteins, and glycolipids - as well as why the surface area to volume ratio is so important in cells. Expand for table of contents.
Contents:
00:00 Intro
1:25 Membrane controls what goes in and out of cell
1:40 Importance of surface area to volume ratio
3:31 Cell Theory
4:00 Fluid Mosaic Model
4:28 Phospholipid and phospholipid bilayer
5:58 Cholesterol
6:23 Proteins (peripheral and integral)
7:43 Glycoproteins and glycolipids (carbohydrates bound to proteins and lipids)
Additional Vocabulary:
-Amphiphilic
-Hydrophilic
-Hydrophobic
The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky's certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit:
http://www.amoebasisters.com/about-us.html
⭐We have a menu of our resources that complement our videos! Visit https://docs.google.com/spreadsheets/d/1b3kmAzFEjWgoMKCrkeNCKFYunWk04IuLY93jI4OY0gY/edit?usp=sharing
We cover the basics in biology concepts at the secondary level. If you are looking to discover more about biology and go into depth beyond these basics, our recommended reference is the FREE, peer reviewed, open source OpenStax biology textbook: https://openstax.org/details/books/biology
Support Us? https://www.amoebasisters.com/support-us
Our Resources:
Biology Playlist: https://www.youtube.com/playlist?list=PLwL0Myd7Dk1F0iQPGrjehze3eDpco1eVz
GIFs: https://www.amoebasisters.com/gifs.html
Handouts: https://www.amoebasisters.com/handouts.html
Comics: https://www.amoebasisters.com/parameciumparlorcomics
Unlectured Series: https://www.amoebasisters.com/unlectured
Connect with us!
Website: https://www.AmoebaSisters.com
Twitter: http://www.twitter.com/AmoebaSisters
Facebook: http://www.facebook.com/AmoebaSisters
Tumblr: http://www.amoebasisters.tumblr.com
Pinterest: http://www.pinterest.com/AmoebaSisters
Instagram: https://www.instagram.com/amoebasistersofficial/
Visit our Redbubble store at https://www.amoebasisters.com/store
TIPS FOR VIEWING EDU YOUTUBE VIDEOS:
Want to learn tips for viewing edu YouTube videos including changing the speed, language, viewing the transcript, etc? https://www.amoebasisters.com/pinkys-ed-tech-favorites/10-youtube-tips-from-an-edu-youtuber-duo
MUSIC:
Music in this video is listed free to use/no attribution required from the YouTube audio library https://www.youtube.com/audiolibrary/music?feature=blog
COMMUNITY:
We take pride in our AWESOME community, and we welcome feedback and discussion. However, please remember that this is an education channel. See YouTube's community guidelines and how YouTube handles comments that are reported by the community. We also reserve the right to remove comments.
TRANSLATIONS:
Hindi Subtitles Credit: Alisha Aggarwal
Audio has been dubbed into Hindi, Portuguese, and Spanish using an artificial voice via https://aloud.area120.google.com to increase accessibility. You can change the audio track language in the Settings menu.
While we don't allow dubbing of our videos, we do gladly accept subtitle translations from our community. Some translated subtitles on our videos were translated by the community using YouTube's community-contributed subtitle feature. After the feature was discontinued by YouTube, we have another option for submitting translated subtitles here: https://www.amoebasisters.com/pinkys-ed-tech-favorites/community-contributed-subtitles We want to thank our amazing community for the generosity of their time in continuing to create translated subtitles. If you have a concern about community contributed contributions, please contact us.
- published: 27 Feb 2018
- views: 3819623
55:15
Robert Lefkowitz (Duke University) Part 1: Seven Transmembrane Receptors
https://www.ibiology.org/cell-biology/g-protein-coupled-receptors/#part-1
In the first segment of the lecture, the history of discovery in the field of seven t...
https://www.ibiology.org/cell-biology/g-protein-coupled-receptors/#part-1
In the first segment of the lecture, the history of discovery in the field of seven transmembrane receptor research over the past forty years is reviewed. Highlights include overcoming initial skepticism that the receptors even existed; isolating the receptors as discrete biochemical entities and demonstrating their ligand binding and functional activating properties; discovering their seven transmembrane spanning arrangement and homology with the visual light receptor rhodopsin, thereby leading to the discovery of the wider seven transmembrane receptor superfamily; determination of the structure function relationships of the receptors by mutagenesis and chimeric receptor construction; discovery of constitutively active mutant receptors; discovery of the phosphorylation of the receptors by G protein coupled receptor kinases, and of the Beta-arrestins and of their universal mechanism for desensitizing the receptors.
https://wn.com/Robert_Lefkowitz_(Duke_University)_Part_1_Seven_Transmembrane_Receptors
https://www.ibiology.org/cell-biology/g-protein-coupled-receptors/#part-1
In the first segment of the lecture, the history of discovery in the field of seven transmembrane receptor research over the past forty years is reviewed. Highlights include overcoming initial skepticism that the receptors even existed; isolating the receptors as discrete biochemical entities and demonstrating their ligand binding and functional activating properties; discovering their seven transmembrane spanning arrangement and homology with the visual light receptor rhodopsin, thereby leading to the discovery of the wider seven transmembrane receptor superfamily; determination of the structure function relationships of the receptors by mutagenesis and chimeric receptor construction; discovery of constitutively active mutant receptors; discovery of the phosphorylation of the receptors by G protein coupled receptor kinases, and of the Beta-arrestins and of their universal mechanism for desensitizing the receptors.
- published: 23 Mar 2010
- views: 77312