APOBEC3B and AID have similar nuclear import mechanisms.
APOBEC3B and AID have similar nuclear import mechanisms.
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DOI:
10.1016/j.jmb.2012.03.011
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发表时间:
2012-06-22
影响因子:
5.6
通讯作者:
Harris, Reuben S.
中科院分区:
文献类型:
--
作者:
Lackey, Lela;Demorest, Zachary L.;Land, Allison M.;Hultquist, Judd F.;Brown, William L.;Harris, Reuben S.
关键词:
Members of the APOBEC protein family catalyze DNA cytosine deamination and underpin a variety of immune defenses. For instance, several family members, including APOBEC3B, elicit strong retrotransposon and retrovirus restriction activities. However, unlike the other proteins, APOBEC3B is the only family member with steady-state nuclear localization. Here we show that APOBEC3B nuclear import is an active process requiring at least one amino acid (Val54) within an N-terminal motif analogous to the nuclear localization determinant of the antibody gene diversification enzyme AID. Mechanistic conservation with AID is further suggested by APOBEC3B’s capacity to interact with the same subset of importin proteins. Despite these mechanistic similarities, enforced APOBEC3B expression cannot substitute for AID-dependent antibody gene diversification by class switch recombination. Regulatory differences between APOBEC3B and AID are also visible during cell cycle progression. Our studies suggest that the present day APOBEC3B enzyme retained the nuclear import mechanism of an ancestral AID protein during the expansion of the APOBEC3 locus in primates. Our studies also highlight the likelihood that, after nuclear import, specialized mechanisms exist to guide these enzymes to their respective physiological substrates and prevent gratuitous chromosomal DNA damage.
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影响因子:
5.6
作者:
Chen, Zhigang;Eggerman, Thomas L.;Bocharov, Alexander V.;Baranova, Irina N.;Vishnyakova, Tatyana G.;Kurlander, Roger J.;Csako, Gyorgy;Patterson, Amy P.
通讯作者:
Patterson, Amy P.
影响因子:
12.3
作者:
Carpenter AE;Jones TR;Lamprecht MR;Clarke C;Kang IH;Friman O;Guertin DA;Chang JH;Lindquist RA;Moffat J;Golland P;Sabatini DM
通讯作者:
Sabatini DM
影响因子:
3.7
作者:
Bogerd, Hal P.;Wiegand, Heather L.;Cullen, Bryan R.
通讯作者:
Cullen, Bryan R.
影响因子:
3.7
作者:
Browne, Edward P.;Allers, Carolina;Landau, Nathaniel R.
通讯作者:
Landau, Nathaniel R.
DOI:
10.1093/bioinformatics/btq662
发表时间:
2011-02-01
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Benkert P;Biasini M;Schwede T
通讯作者:
Schwede T