Regulation of tankyrase activity by a catalytic domain dimer interface.
Regulation of tankyrase activity by a catalytic domain dimer interface.
复制标题
DOI:
10.1016/j.bbrc.2018.07.113
复制
发表时间:
2018-09-10
影响因子:
3.1
通讯作者:
Zhang X
中科院分区:
文献类型:
--
作者:
Fan C;Yarravarapu N;Chen H;Kulak O;Dasari P;Herbert J;Yamaguchi K;Lum L;Zhang X
Tankyrases (TNKS and TNKS2) are enzymes that catalyze poly-ADP-ribosylation (PARsylation) of their target proteins. Tankyrase-mediated PARsylation plays critical regulatory roles in cell signaling, particularly in the Wnt/β-catenin pathway. The sterile alpha motif (SAM) domain in tankyrases mediates their oligomerization, which is essential for tankyrase function. The oligomerization regulates the catalytic activity of tankyrases, but the underlying mechanism is unclear. Our analyses of crystal structures of the tankyrase catalytic domain suggest that formation of a head-to-head dimer regulates the catalytic activity. Our activity assays show that residues in the catalytic domain dimer interface are important for the PARsylation activity of tankyrases both in solution and cells. The dimer is weak and may only form in the context of the SAM domain-mediated oligomers of tankyrases, consistent with the dependence of the tankyrase activity on the SAM domain.
登录
查看更多内容
DOI:
10.1073/pnas.1116618109
发表时间:
2012-01-31
影响因子:
11.1
作者:
Morrone, Seamus;Cheng, Zhihong;Xu, Wenqing
通讯作者:
Xu, Wenqing
影响因子:
16
作者:
Mariotti L;Templeton CM;Ranes M;Paracuellos P;Cronin N;Beuron F;Morris E;Guettler S
通讯作者:
Guettler S
影响因子:
3.4
作者:
Schuck, P
通讯作者:
Schuck, P
影响因子:
8
作者:
DaRosa, Paul A.;Ovchinnikov, Sergey;Klevit, Rachel E.
通讯作者:
Klevit, Rachel E.
影响因子:
5.7
作者:
Riccio, Amanda A.;McCauley, Michael;Pascal, John M.
通讯作者:
Pascal, John M.