Document Detail


AID Targeting in Antibody Diversity.
MedLine Citation:
PMID:  21762814     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Antibody maturation requires class switch recombination (CSR) and somatic hypermutation (SHM), both of which are initiated by activation-induced cytidine deaminase (AID). AID deaminates cytosine residues resulting in mismatches that are differentially processed to produce double-strand breaks in Ig switch (S) regions that lead to CSR, or to point mutations in variable (V) exons resulting in SHM. Although AID was first thought to be Ig-specific, recent work indicates that it also targets a diverse group of non-Ig loci, including genes such as Bcl6 and c-myc, whose modification by AID results in lymphoma-associated mutations and translocations. Here, we review the recent literature on AID targeting and the role for transcriptional stalling in recruitment of this enzyme to Ig and non-Ig loci. We propose a model for AID recruitment based on transcriptional stalling, which reconciles several of the key features of SHM, CSR, and lymphoma-associated translocation.
Authors:
Rushad Pavri; Michel C Nussenzweig
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Advances in immunology     Volume:  110     ISSN:  1557-8445     ISO Abbreviation:  Adv. Immunol.     Publication Date:  2011  
Date Detail:
Created Date:  2011-07-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370425     Medline TA:  Adv Immunol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1-26     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
Affiliation:
Laboratory of Molecular Immunology, The Rockefeller University, New York, USA.
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