A licensing step links AID to transcription elongation for mutagenesis in B cells.
A licensing step links AID to transcription elongation for mutagenesis in B cells.
复制标题
DOI:
10.1038/s41467-018-03387-6
复制
发表时间:
2018-03-28
影响因子:
16.6
通讯作者:
Di Noia JM
中科院分区:
文献类型:
--
作者:
Methot SP;Litzler LC;Subramani PG;Eranki AK;Fifield H;Patenaude AM;Gilmore JC;Santiago GE;Bagci H;Côté JF;Larijani M;Verdun RE;Di Noia JM
Activation-induced deaminase (AID) mutates the immunoglobulin (Ig) genes to initiate somatic hypermutation (SHM) and class switch recombination (CSR) in B cells, thus underpinning antibody responses. AID mutates a few hundred other loci, but most AID-occupied genes are spared. The mechanisms underlying productive deamination versus non-productive AID targeting are unclear. Here we show that three clustered arginine residues define a functional AID domain required for SHM, CSR, and off-target activity in B cells without affecting AID deaminase activity or Escherichia coli mutagenesis. Both wt AID and mutants with single amino acid replacements in this domain broadly associate with Spt5 and chromatin and occupy the promoter of AID target genes. However, mutant AID fails to occupy the corresponding gene bodies and loses association with transcription elongation factors. Thus AID mutagenic activity is determined not by locus occupancy but by a licensing mechanism, which couples AID to transcription elongation. Activation-induced deaminase (AID) is important for inducing desirable mutations at the B cell receptor genes for effective antibody responses. Here the authors show that three key arginine residues of AID link AID-chromatin association with transcription elongation to license AID for specific mutagenesis in B cells.
登录
查看更多内容
DOI:
10.4049/jimmunol.1400433
发表时间:
2014-07-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Matthews AJ;Husain S;Chaudhuri J
通讯作者:
Chaudhuri J
DOI:
10.1038/nri.2016.2
发表时间:
2016-03
期刊:
Nature reviews. Immunology
影响因子:
--
作者:
Casellas R;Basu U;Yewdell WT;Chaudhuri J;Robbiani DF;Di Noia JM
通讯作者:
Di Noia JM
影响因子:
5.6
作者:
Lackey, Lela;Demorest, Zachary L.;Land, Allison M.;Hultquist, Judd F.;Brown, William L.;Harris, Reuben S.
通讯作者:
Harris, Reuben S.
DOI:
10.1084/jem.20141157
发表时间:
2015-04-06
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Methot SP;Litzler LC;Trajtenberg F;Zahn A;Robert F;Pelletier J;Buschiazzo A;Magor BG;Di Noia JM
通讯作者:
Di Noia JM
影响因子:
64.8
作者:
Liu, Man;Duke, Jamie L.;Schatz, David G.
通讯作者:
Schatz, David G.