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Antigenic Determinants (Epitopes) - Animation
📌 𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- https://www.instagram.com/drgbhanuprakash
📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- https://t.me/bhanuprakashdr
📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- https://linktr.ee/DrGBhanuprakash
Epitope, also called antigenic determinant, portion of a foreign protein, or antigen, that is capable of stimulating an immune response. An epitope is the part of the antigen that binds to a specific antigen receptor on the surface of a B cell. Binding between the receptor and epitope occurs only if their structures are complementary. If they are, epitope and receptor fit together like two pieces of a puzzle, an event that is necessary to activate B-cell production of antibodies. The antibodies produced by B cells are targeted specifically to the epitopes that bind to the cells’ antigen receptors. ...
published: 13 Feb 2019
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Epitope vs paratope
published: 01 Jan 2019
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Antigen and Epitope (Antigenic Determinant) (FL-Immuno/19)
In this video lecture we will discuss
What is an antigen?
What is heteroantigen and autoantigen?
What is an epitope?
What are antigenic determinants?
What is difference between epitope and antigen?
How antigen and epitope are related?
published: 15 Apr 2017
-
Epitope Tags: Serving Up Choice Proteins
Epitope tags allow you to identify or purify your favorite protein, even those that are novel or poorly immunogenic. Watch this video to learn more about epitope tags and how you can incorporate them into your experiments!
Learn more about epitope tags: https://www.biolegend.com/en-us/epitope-tag-products
published: 14 Aug 2018
-
Epitope Mapping
Why Use Epitope Mapping? Functional Understanding and Selection of Antibodies
Determining the binding site will establish how the epitope relates to an antibody’s functional aspects, e.g. does binding take place at a similar site as the ligand. In addition, epitope mapping can be used to select antibodies that target specific parts of a protein, e.g. for (diagnostic) assay development or therapeutic drug development.
Our expert team in the Netherlands invented peptide-based epitope mapping. Building on 25 years in advanced and applied peptide chemistry, we provide accurate, clear and directly applicable epitope definitions for your antibodies. Combining our scientists’ experience and expertise with our in-house developed peptide arrays and proprietary CLIPS™ technology provides us with...
published: 13 Feb 2023
-
Epitope and paratope
#sowmyanagaraj #sowmyanrao #swiminscience
Epitope and paratope:
Think about lock and key. A key specifically fits to a small portion of the key. Similarly, Immune cells recognize discrete sites on the antigen called epitopes, or antigenic determinants. These are immunologically active regions of an antigen that bind to antigen-specific membrane receptors on lymphocytes or to secreted antibodies. Epitopes may be sugars, amino acids and other organic molecules.
B-cells recognize specific epitopes whether as part of the antigen or as free-soluble molecules or as degraded/proteolytic fragments. However, T-cells only bind to epitopes that are on small fragments bound on antigen-presenting cells. Further, the epitopes must be accessible in order to be able to bind to an antibody. In native pr...
published: 27 Jan 2023
-
Exploring TCR-Epitope Prediction Tools: Insights And Pitfalls
T cells are at the heart of the immune system's ability to distinguish between self and non-self, playing a critical role in both health and disease. The specificity of the T-cell response is mediated by the T-cell receptor (TCR), a product of the unique V(D)J recombination process, which enables interaction with a wide variety of antigens. Given the sheer scale of potential TCR-epitope interactions – stemming from both the enormous epitope and TCR repertoire diversity -- experimental validation of each TCR interaction is not feasible. This has spurred the development of TCR-epitope prediction models that aim to narrow down the search for immunogenic epitopes, thereby streamlining research and reducing costs. This webinar will delve into these predictive strategies, highlighting their impo...
published: 08 Dec 2023
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Antigen
An antigen (Ag) is a molecule or molecular structure, such as may be present at the outside of a pathogen, that can be bound to by an antigen-specific antibody (Ab) or B cell antigen receptor (BCR). The presence of antigens in the body normally triggers an immune response. The term "antigen" originally described a structural molecule that binds specifically to an antibody only in the form of native antigen,It was expanded later to refer to any molecule or a linear molecular fragment after processing the native antigen that can be recognized by T-cell receptor (TCR). BCR and TCR are both highly variable antigen receptors diversified by somatic V(D)J recombination. Both T cells and B cells are cellular components of adaptive immunity. The Ag abbreviation stands for an antibody generator.
A...
published: 02 Sep 2020
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Epitopes | Antigenic determinant | Genesis Academy #Epitopes
Epitopes or antigenic determinants are 3 dimensional pockets present on the surface of an antigen. Epitopes are also known as antigenic determinants and they are responsible for the recognition and immune response by the antibodies. The whole of the antigen is never recognized by the antibodies, but only a part known as the antigenic determinants or the epitopes. The part on the antibody which recognises the epitope is called the paratope. This video is about basic immunology and will help in graduate and undergraduate students to have a better grasp of the subject. Thanks for watching.
This video is protected by the IPR laws of Genesis Academy.
Preparation for CSIR NET Life Sciences, IIT JAM Biotechnology, GATE Life Sciences, GATE Biotechnology, Biotechnology Entrance exam preparation, ...
published: 06 Jun 2021
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Overview of the Immune Epitope Database (IEDB)
This is a brief overview of the IEDB homepage interface. The key highlights include:
* The central panel - database search interface
* The right panel - epitope analysis and prediction tools
* The left panel - additional information and upcoming events
You can visit the IEDB here - https://www.iedb.org/
published: 16 Oct 2020
0:47
Antigenic Determinants (Epitopes) - Animation
📌 𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- https://www.instagram.com/drgbhanuprakash
📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- https://t.me/bhanuprakashdr
📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- ...
📌 𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- https://www.instagram.com/drgbhanuprakash
📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- https://t.me/bhanuprakashdr
📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- https://linktr.ee/DrGBhanuprakash
Epitope, also called antigenic determinant, portion of a foreign protein, or antigen, that is capable of stimulating an immune response. An epitope is the part of the antigen that binds to a specific antigen receptor on the surface of a B cell. Binding between the receptor and epitope occurs only if their structures are complementary. If they are, epitope and receptor fit together like two pieces of a puzzle, an event that is necessary to activate B-cell production of antibodies. The antibodies produced by B cells are targeted specifically to the epitopes that bind to the cells’ antigen receptors. Thus, the epitope also is the region of the antigen that is recognized by specific antibodies, which bind to and remove the antigen from the body.
Many antigens have a variety of distinct epitopes on their surfaces. Each epitope is capable of reacting with a different B cell antigen receptor. In addition, the blood serum of an immunized person or animal normally contains a mixture of antibodies, all capable of combining with the same antigen but with different epitopes that appear on the surface of the antigen. Furthermore, antibodies that bind to the same epitope often have different abilities to bind to that epitope.
It is possible for two or more different antigens to have an epitope in common. In these cases, antibodies targeted to one antigen are able to react with all other antigens carrying the same epitope. Such antigens are known as cross-reacting antigens.
#antigenicdeterminants #epitopes #immunology #microbiology
https://wn.com/Antigenic_Determinants_(Epitopes)_Animation
📌 𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- https://www.instagram.com/drgbhanuprakash
📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- https://t.me/bhanuprakashdr
📌𝗦𝘂𝗯𝘀𝗰𝗿𝗶𝗯𝗲 𝗧𝗼 𝗠𝘆 𝗠𝗮𝗶𝗹𝗶𝗻𝗴 𝗟𝗶𝘀𝘁:- https://linktr.ee/DrGBhanuprakash
Epitope, also called antigenic determinant, portion of a foreign protein, or antigen, that is capable of stimulating an immune response. An epitope is the part of the antigen that binds to a specific antigen receptor on the surface of a B cell. Binding between the receptor and epitope occurs only if their structures are complementary. If they are, epitope and receptor fit together like two pieces of a puzzle, an event that is necessary to activate B-cell production of antibodies. The antibodies produced by B cells are targeted specifically to the epitopes that bind to the cells’ antigen receptors. Thus, the epitope also is the region of the antigen that is recognized by specific antibodies, which bind to and remove the antigen from the body.
Many antigens have a variety of distinct epitopes on their surfaces. Each epitope is capable of reacting with a different B cell antigen receptor. In addition, the blood serum of an immunized person or animal normally contains a mixture of antibodies, all capable of combining with the same antigen but with different epitopes that appear on the surface of the antigen. Furthermore, antibodies that bind to the same epitope often have different abilities to bind to that epitope.
It is possible for two or more different antigens to have an epitope in common. In these cases, antibodies targeted to one antigen are able to react with all other antigens carrying the same epitope. Such antigens are known as cross-reacting antigens.
#antigenicdeterminants #epitopes #immunology #microbiology
- published: 13 Feb 2019
- views: 44312
4:49
Antigen and Epitope (Antigenic Determinant) (FL-Immuno/19)
In this video lecture we will discuss
What is an antigen?
What is heteroantigen and autoantigen?
What is an epitope?
What are antigenic determinants?
What is d...
In this video lecture we will discuss
What is an antigen?
What is heteroantigen and autoantigen?
What is an epitope?
What are antigenic determinants?
What is difference between epitope and antigen?
How antigen and epitope are related?
https://wn.com/Antigen_And_Epitope_(Antigenic_Determinant)_(Fl_Immuno_19)
In this video lecture we will discuss
What is an antigen?
What is heteroantigen and autoantigen?
What is an epitope?
What are antigenic determinants?
What is difference between epitope and antigen?
How antigen and epitope are related?
- published: 15 Apr 2017
- views: 137016
2:50
Epitope Tags: Serving Up Choice Proteins
Epitope tags allow you to identify or purify your favorite protein, even those that are novel or poorly immunogenic. Watch this video to learn more about epito...
Epitope tags allow you to identify or purify your favorite protein, even those that are novel or poorly immunogenic. Watch this video to learn more about epitope tags and how you can incorporate them into your experiments!
Learn more about epitope tags: https://www.biolegend.com/en-us/epitope-tag-products
https://wn.com/Epitope_Tags_Serving_Up_Choice_Proteins
Epitope tags allow you to identify or purify your favorite protein, even those that are novel or poorly immunogenic. Watch this video to learn more about epitope tags and how you can incorporate them into your experiments!
Learn more about epitope tags: https://www.biolegend.com/en-us/epitope-tag-products
- published: 14 Aug 2018
- views: 9891
1:01
Epitope Mapping
Why Use Epitope Mapping? Functional Understanding and Selection of Antibodies
Determining the binding site will establish how the epitope relates to an antibo...
Why Use Epitope Mapping? Functional Understanding and Selection of Antibodies
Determining the binding site will establish how the epitope relates to an antibody’s functional aspects, e.g. does binding take place at a similar site as the ligand. In addition, epitope mapping can be used to select antibodies that target specific parts of a protein, e.g. for (diagnostic) assay development or therapeutic drug development.
Our expert team in the Netherlands invented peptide-based epitope mapping. Building on 25 years in advanced and applied peptide chemistry, we provide accurate, clear and directly applicable epitope definitions for your antibodies. Combining our scientists’ experience and expertise with our in-house developed peptide arrays and proprietary CLIPS™ technology provides us with a unique platform allowing us to define linear, conformational and discontinuous epitopes accurate and cost-effective.
https://www.biosynth.com/biologics/epitope-mapping
https://wn.com/Epitope_Mapping
Why Use Epitope Mapping? Functional Understanding and Selection of Antibodies
Determining the binding site will establish how the epitope relates to an antibody’s functional aspects, e.g. does binding take place at a similar site as the ligand. In addition, epitope mapping can be used to select antibodies that target specific parts of a protein, e.g. for (diagnostic) assay development or therapeutic drug development.
Our expert team in the Netherlands invented peptide-based epitope mapping. Building on 25 years in advanced and applied peptide chemistry, we provide accurate, clear and directly applicable epitope definitions for your antibodies. Combining our scientists’ experience and expertise with our in-house developed peptide arrays and proprietary CLIPS™ technology provides us with a unique platform allowing us to define linear, conformational and discontinuous epitopes accurate and cost-effective.
https://www.biosynth.com/biologics/epitope-mapping
- published: 13 Feb 2023
- views: 1454
1:41
Epitope and paratope
#sowmyanagaraj #sowmyanrao #swiminscience
Epitope and paratope:
Think about lock and key. A key specifically fits to a small portion of the key. Similarly, Im...
#sowmyanagaraj #sowmyanrao #swiminscience
Epitope and paratope:
Think about lock and key. A key specifically fits to a small portion of the key. Similarly, Immune cells recognize discrete sites on the antigen called epitopes, or antigenic determinants. These are immunologically active regions of an antigen that bind to antigen-specific membrane receptors on lymphocytes or to secreted antibodies. Epitopes may be sugars, amino acids and other organic molecules.
B-cells recognize specific epitopes whether as part of the antigen or as free-soluble molecules or as degraded/proteolytic fragments. However, T-cells only bind to epitopes that are on small fragments bound on antigen-presenting cells. Further, the epitopes must be accessible in order to be able to bind to an antibody. In native proteins, protruding regions on the surface of the protein are the most likely to be recognized as epitopes, and these regions are usually composed of predominantly hydrophilic amino acids. On the other hand, the interior hidden hydrophobic proteins could also function as epitopes if the protein is denatured.
Paratopes: The corresponding binding site of an antibody (Fab region) to epitopes of antigen is called a paratope. Most antigens are multivalent. It means, a single antigen may contain many epitopes which may bind to many antibodies.
The structure of epitope and paratope can be defined with a lock and key metaphor as the structures are specific and fit with one another.
References:
Kelly, J., 1992. Immunology: by Janis Kuby, WH Freeman.
https://www.onlinebiologynotes.com/types-and-characteristics-of-antigen-antigenicity-and-immunogenicity/
https://microbiologyinfo.com/antigen-properties-types-and-determinants-of-antigenicity/
https://microbenotes.com/antigen/
https://wn.com/Epitope_And_Paratope
#sowmyanagaraj #sowmyanrao #swiminscience
Epitope and paratope:
Think about lock and key. A key specifically fits to a small portion of the key. Similarly, Immune cells recognize discrete sites on the antigen called epitopes, or antigenic determinants. These are immunologically active regions of an antigen that bind to antigen-specific membrane receptors on lymphocytes or to secreted antibodies. Epitopes may be sugars, amino acids and other organic molecules.
B-cells recognize specific epitopes whether as part of the antigen or as free-soluble molecules or as degraded/proteolytic fragments. However, T-cells only bind to epitopes that are on small fragments bound on antigen-presenting cells. Further, the epitopes must be accessible in order to be able to bind to an antibody. In native proteins, protruding regions on the surface of the protein are the most likely to be recognized as epitopes, and these regions are usually composed of predominantly hydrophilic amino acids. On the other hand, the interior hidden hydrophobic proteins could also function as epitopes if the protein is denatured.
Paratopes: The corresponding binding site of an antibody (Fab region) to epitopes of antigen is called a paratope. Most antigens are multivalent. It means, a single antigen may contain many epitopes which may bind to many antibodies.
The structure of epitope and paratope can be defined with a lock and key metaphor as the structures are specific and fit with one another.
References:
Kelly, J., 1992. Immunology: by Janis Kuby, WH Freeman.
https://www.onlinebiologynotes.com/types-and-characteristics-of-antigen-antigenicity-and-immunogenicity/
https://microbiologyinfo.com/antigen-properties-types-and-determinants-of-antigenicity/
https://microbenotes.com/antigen/
- published: 27 Jan 2023
- views: 2074
52:50
Exploring TCR-Epitope Prediction Tools: Insights And Pitfalls
T cells are at the heart of the immune system's ability to distinguish between self and non-self, playing a critical role in both health and disease. The specif...
T cells are at the heart of the immune system's ability to distinguish between self and non-self, playing a critical role in both health and disease. The specificity of the T-cell response is mediated by the T-cell receptor (TCR), a product of the unique V(D)J recombination process, which enables interaction with a wide variety of antigens. Given the sheer scale of potential TCR-epitope interactions – stemming from both the enormous epitope and TCR repertoire diversity -- experimental validation of each TCR interaction is not feasible. This has spurred the development of TCR-epitope prediction models that aim to narrow down the search for immunogenic epitopes, thereby streamlining research and reducing costs. This webinar will delve into these predictive strategies, highlighting their importance in advancing immunological research and applications.
A range of prediction strategies, including databases, machine learning, and structure-based methods are discussed. To improve accessibility and understanding on when to implement a tool, real-life examples are used to illustrate their practical benefits. Additionally, the challenges and pitfalls associated with these tools, including the complexities of handling negative data in TCR-epitope analysis are addressed. Watch this video to unlock the potential of TCR-epitope prediction tools and gain the knowledge and skills to effectively integrate them into your own research.
Speakers:
Dr. Kerry Mullan, University of Antwerp, Belgium
Vincent Van Deuren, University of Antwerp, Belgium
Romi Vandoren, University of Antwerp, Belgium
Speaker bios:
Dr. Kerry Mullan is a post-doc undertaking a post-doctoral fellowship (CZI funding) in which she is currently developing STEGO.R, an application to aid in the analysis of single cell RNA-seq with single cells T cell receptor (TCR) sequencing. Romi Vandoren’s research is centered around the development of novel bioinformatic tools to unravel the TCR-microbiome interaction network in the gut and provide insights into microbial-driven immune modulation. Vincent Van Deuren is dedicated to uncovering the TCR repertoire across various forms of autoimmune arthritis, with a particular focus on pediatric Lyme arthritis, where diagnostics and treatments are currently inadequate. All three researchers are working under the supervision of Prof. Pieter Meysman, Prof. Kris Laukens, and Prof. Benson Ogunjimi at the University of Antwerp, Belgium.
https://wn.com/Exploring_Tcr_Epitope_Prediction_Tools_Insights_And_Pitfalls
T cells are at the heart of the immune system's ability to distinguish between self and non-self, playing a critical role in both health and disease. The specificity of the T-cell response is mediated by the T-cell receptor (TCR), a product of the unique V(D)J recombination process, which enables interaction with a wide variety of antigens. Given the sheer scale of potential TCR-epitope interactions – stemming from both the enormous epitope and TCR repertoire diversity -- experimental validation of each TCR interaction is not feasible. This has spurred the development of TCR-epitope prediction models that aim to narrow down the search for immunogenic epitopes, thereby streamlining research and reducing costs. This webinar will delve into these predictive strategies, highlighting their importance in advancing immunological research and applications.
A range of prediction strategies, including databases, machine learning, and structure-based methods are discussed. To improve accessibility and understanding on when to implement a tool, real-life examples are used to illustrate their practical benefits. Additionally, the challenges and pitfalls associated with these tools, including the complexities of handling negative data in TCR-epitope analysis are addressed. Watch this video to unlock the potential of TCR-epitope prediction tools and gain the knowledge and skills to effectively integrate them into your own research.
Speakers:
Dr. Kerry Mullan, University of Antwerp, Belgium
Vincent Van Deuren, University of Antwerp, Belgium
Romi Vandoren, University of Antwerp, Belgium
Speaker bios:
Dr. Kerry Mullan is a post-doc undertaking a post-doctoral fellowship (CZI funding) in which she is currently developing STEGO.R, an application to aid in the analysis of single cell RNA-seq with single cells T cell receptor (TCR) sequencing. Romi Vandoren’s research is centered around the development of novel bioinformatic tools to unravel the TCR-microbiome interaction network in the gut and provide insights into microbial-driven immune modulation. Vincent Van Deuren is dedicated to uncovering the TCR repertoire across various forms of autoimmune arthritis, with a particular focus on pediatric Lyme arthritis, where diagnostics and treatments are currently inadequate. All three researchers are working under the supervision of Prof. Pieter Meysman, Prof. Kris Laukens, and Prof. Benson Ogunjimi at the University of Antwerp, Belgium.
- published: 08 Dec 2023
- views: 982
4:58
Antigen
An antigen (Ag) is a molecule or molecular structure, such as may be present at the outside of a pathogen, that can be bound to by an antigen-specific antibody ...
An antigen (Ag) is a molecule or molecular structure, such as may be present at the outside of a pathogen, that can be bound to by an antigen-specific antibody (Ab) or B cell antigen receptor (BCR). The presence of antigens in the body normally triggers an immune response. The term "antigen" originally described a structural molecule that binds specifically to an antibody only in the form of native antigen,It was expanded later to refer to any molecule or a linear molecular fragment after processing the native antigen that can be recognized by T-cell receptor (TCR). BCR and TCR are both highly variable antigen receptors diversified by somatic V(D)J recombination. Both T cells and B cells are cellular components of adaptive immunity. The Ag abbreviation stands for an antibody generator.
Antigens are "targeted" by antibodies. Each antibody is specifically produced by the immune system to match an antigen after cells in the immune system come into contact with it; this allows a precise identification or matching of the antigen and the initiation of a tailored response. The antibody is said to "match" the antigen in the sense that it can bind to it due to an adaptation in a region of the antibody; because of this, many different antibodies are produced, each able to bind a different antigen while sharing the same basic structure. In most cases, an adapted antibody can only react to and bind one specific antigen; in some instances, however, antibodies may cross-react and bind more than one antigen.
Also, an antigen is a molecule that binds to Ag-specific receptors, but cannot necessarily induce an immune response in the body by itself.[3] Antigens are usually proteins, peptides (amino acid chains) and polysaccharides (chains of monosaccharides/simple sugars) but lipids and nucleic acids become antigens only when combined with proteins and polysaccharides.[4] In general, saccharides and lipids (as opposed to peptides) qualify as antigens but not as immunogens since they cannot elicit an immune response on their own. Furthermore, for a peptide to induce an immune response (activation of T-cells by antigen-presenting cells) it must be a large enough size, since peptides too small will also not elicit an immune response.
The antigen may originate from within the body ("self-antigen") or from the external environment ("non-self"). The immune system is supposed to identify and attack "non-self" invaders from the outside world or modified/harmful substances present in the body and usually does not react to self-antigens under normal homeostatic conditions due to negative selection of T cells in the thymus.
Vaccines are examples of antigens in an immunogenic form, which are intentionally administered to a recipient to induce the memory function of adaptive immune system toward the antigens of the pathogen invading that recipient.
https://wn.com/Antigen
An antigen (Ag) is a molecule or molecular structure, such as may be present at the outside of a pathogen, that can be bound to by an antigen-specific antibody (Ab) or B cell antigen receptor (BCR). The presence of antigens in the body normally triggers an immune response. The term "antigen" originally described a structural molecule that binds specifically to an antibody only in the form of native antigen,It was expanded later to refer to any molecule or a linear molecular fragment after processing the native antigen that can be recognized by T-cell receptor (TCR). BCR and TCR are both highly variable antigen receptors diversified by somatic V(D)J recombination. Both T cells and B cells are cellular components of adaptive immunity. The Ag abbreviation stands for an antibody generator.
Antigens are "targeted" by antibodies. Each antibody is specifically produced by the immune system to match an antigen after cells in the immune system come into contact with it; this allows a precise identification or matching of the antigen and the initiation of a tailored response. The antibody is said to "match" the antigen in the sense that it can bind to it due to an adaptation in a region of the antibody; because of this, many different antibodies are produced, each able to bind a different antigen while sharing the same basic structure. In most cases, an adapted antibody can only react to and bind one specific antigen; in some instances, however, antibodies may cross-react and bind more than one antigen.
Also, an antigen is a molecule that binds to Ag-specific receptors, but cannot necessarily induce an immune response in the body by itself.[3] Antigens are usually proteins, peptides (amino acid chains) and polysaccharides (chains of monosaccharides/simple sugars) but lipids and nucleic acids become antigens only when combined with proteins and polysaccharides.[4] In general, saccharides and lipids (as opposed to peptides) qualify as antigens but not as immunogens since they cannot elicit an immune response on their own. Furthermore, for a peptide to induce an immune response (activation of T-cells by antigen-presenting cells) it must be a large enough size, since peptides too small will also not elicit an immune response.
The antigen may originate from within the body ("self-antigen") or from the external environment ("non-self"). The immune system is supposed to identify and attack "non-self" invaders from the outside world or modified/harmful substances present in the body and usually does not react to self-antigens under normal homeostatic conditions due to negative selection of T cells in the thymus.
Vaccines are examples of antigens in an immunogenic form, which are intentionally administered to a recipient to induce the memory function of adaptive immune system toward the antigens of the pathogen invading that recipient.
- published: 02 Sep 2020
- views: 190970
3:30
Epitopes | Antigenic determinant | Genesis Academy #Epitopes
Epitopes or antigenic determinants are 3 dimensional pockets present on the surface of an antigen. Epitopes are also known as antigenic determinants and they ar...
Epitopes or antigenic determinants are 3 dimensional pockets present on the surface of an antigen. Epitopes are also known as antigenic determinants and they are responsible for the recognition and immune response by the antibodies. The whole of the antigen is never recognized by the antibodies, but only a part known as the antigenic determinants or the epitopes. The part on the antibody which recognises the epitope is called the paratope. This video is about basic immunology and will help in graduate and undergraduate students to have a better grasp of the subject. Thanks for watching.
This video is protected by the IPR laws of Genesis Academy.
Preparation for CSIR NET Life Sciences, IIT JAM Biotechnology, GATE Life Sciences, GATE Biotechnology, Biotechnology Entrance exam preparation, ICMR JRF, Genesis academy, epitopes, antigenic determinants
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#Epitopes
#Antigenicdeterminants
#paratopes
https://wn.com/Epitopes_|_Antigenic_Determinant_|_Genesis_Academy_Epitopes
Epitopes or antigenic determinants are 3 dimensional pockets present on the surface of an antigen. Epitopes are also known as antigenic determinants and they are responsible for the recognition and immune response by the antibodies. The whole of the antigen is never recognized by the antibodies, but only a part known as the antigenic determinants or the epitopes. The part on the antibody which recognises the epitope is called the paratope. This video is about basic immunology and will help in graduate and undergraduate students to have a better grasp of the subject. Thanks for watching.
This video is protected by the IPR laws of Genesis Academy.
Preparation for CSIR NET Life Sciences, IIT JAM Biotechnology, GATE Life Sciences, GATE Biotechnology, Biotechnology Entrance exam preparation, ICMR JRF, Genesis academy, epitopes, antigenic determinants
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- published: 06 Jun 2021
- views: 17199
3:42
Overview of the Immune Epitope Database (IEDB)
This is a brief overview of the IEDB homepage interface. The key highlights include:
* The central panel - database search interface
* The right panel - epitope...
This is a brief overview of the IEDB homepage interface. The key highlights include:
* The central panel - database search interface
* The right panel - epitope analysis and prediction tools
* The left panel - additional information and upcoming events
You can visit the IEDB here - https://www.iedb.org/
https://wn.com/Overview_Of_The_Immune_Epitope_Database_(Iedb)
This is a brief overview of the IEDB homepage interface. The key highlights include:
* The central panel - database search interface
* The right panel - epitope analysis and prediction tools
* The left panel - additional information and upcoming events
You can visit the IEDB here - https://www.iedb.org/
- published: 16 Oct 2020
- views: 4368