Unwinding protein complexes in ALTernative telomere maintenance.
Unwinding protein complexes in ALTernative telomere maintenance.
复制标题
DOI:
10.1002/jcb.22388
复制
发表时间:
2010-01-01
影响因子:
4
通讯作者:
Groden, Joanna
中科院分区:
文献类型:
--
作者:
Bhattacharyya, Saumitri;Sandy, April;Groden, Joanna
Telomeres are composed of specialized chromatin that includes DNA repair/recombination proteins, telomere DNA-binding proteins and a number of three dimensional nucleic acid structures including G-quartets and D-loops. A number of studies suggest that the BLM and WRN recQ-like helicases play important roles in recombination-mediated mechanisms of telomere elongation or Alternative Lengthening of Telomeres (ALT), processes that maintain/elongate telomeres in the absence of telomerase. BLM and WRN localize within ALT-associated nuclear bodies in telomerase-negative immortalized cell lines and interact with the telomere-specific proteins POT1, TRF1 and TRF2. Helicase activity is modulated by these interactions. BLM functions in DNA double-strand break repair processes such as non-homologous end joining, homologous recombination-mediated repair, resolution of stalled replication forks and synthesis-dependent strand annealing, although its precise functions at the telomeres are speculative. WRN also functions in DNA replication, recombination and repair, and in addition to its helicase domain, includes an exonuclease domain not found in other recQ-like helicases. The biochemical properties of BLM and WRN are, therefore, important in biological processes other than DNA replication, recombination and repair. In this review, we discuss some previous and recent findings of human rec-Q-like helicases and their role in telomere elongation during ALT processes.
登录
查看更多内容
影响因子:
4.8
作者:
Brosh, RM;Li, JL;Bohr, VA
通讯作者:
Bohr, VA
影响因子:
11.4
作者:
BRYAN, TM;ENGLEZOU, A;REDDEL, RR
通讯作者:
REDDEL, RR
影响因子:
5.6
作者:
Griffith, J;Bianchi, A;de Lange, T
通讯作者:
de Lange, T
DOI:
10.1083/jcb.200110009
发表时间:
2002-04-01
期刊:
The Journal of cell biology
影响因子:
--
作者:
Franchitto A;Pichierri P
通讯作者:
Pichierri P
影响因子:
4.8
作者:
Baynton, K;Otterlei, M;Seeberg, E
通讯作者:
Seeberg, E