A Broad Role for Cysteines in Bovine Antibody Diversity
| Autor: | Jeremy K. Haakenson, Gabrielle Warner, Thaddeus C. Deiss, Michael F. Criscitiello, Waithaka Mwangi, Vaughn V. Smider |
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| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Genetics Repertoire Immunology Somatic hypermutation Antibody Diversity General Medicine Complementarity Determining Regions Antibodies Article Germline Deep sequencing Amino acid chemistry Animals Immunology and Allergy Cattle Cysteine Immunoglobulin Heavy Chains Gene |
| Zdroj: | ImmunoHorizons |
| ISSN: | 2573-7732 |
| DOI: | 10.4049/immunohorizons.1900058 |
| Popis: | Ab diversity in most vertebrates results from the assortment of amino acid side chains on CDR loops formed through V(D)J recombination. Cows (Bos taurus) have a low combinatorial diversity potential because of a small number of highly homologous V, D, and J gene segments. Despite this, a subset of the Ab repertoire (∼10%) contains exceptionally long CDR H chain (HC) 3 (H3) regions with a rich diversity of cysteines and disulfide-bonded loops that diversify through a single V-D-J recombination event followed by massive somatic hypermutation. However, the much larger portion of the repertoire, encoding shorter CDR H3s, has not been examined in detail. Analysis of germline gene segments reveals noncanonical cysteines in the HC V regions and significant cysteine content in the HC D regions. Deep sequencing analysis of naturally occurring shorter CDR H3 ( |
| Databáze: | OpenAIRE |
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