Integrative structural analysis of the UTPB complex, an early assembly factor for eukaryotic small ribosomal subunits.
Integrative structural analysis of the UTPB complex, an early assembly factor for eukaryotic small ribosomal subunits.
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UTPB复合物的整合结构分析,UTPB复合物是真核小核糖体亚基的早期组装因子
DOI:
10.1093/nar/gkw562
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发表时间:
2016-09-06
影响因子:
14.9
通讯作者:
Ye K
中科院分区:
文献类型:
--
作者:
Zhang C;Sun Q;Chen R;Chen X;Lin J;Ye K
Ribosome assembly is an essential and conserved cellular process in eukaryotes that requires numerous assembly factors. The six-subunit UTPB complex is an essential component of the 90S precursor of the small ribosomal subunit. Here, we analyzed the molecular architecture of UTPB using an integrative structural biology approach. We mapped the major interactions that associate each of six UTPB proteins. Crystallographic studies showed that Utp1, Utp21, Utp12 and Utp13 are evolutionarily related and form a dimer of dimers (Utp1–Utp21, Utp12–Utp13) through their homologous helical C-terminal domains. Molecular docking with crosslinking restraints showed that the WD domains of Utp12 and Utp13 are associated, as are the WD domains of Utp1, Utp21 and Utp18. Electron microscopy images of the entire UTPB complex revealed that it predominantly adopts elongated conformations and possesses internal flexibility. We also determined crystal structures of the WD domain of Utp18 and the HAT and deviant HAT domains of Utp6. A structural model of UTPB was derived based on these data.
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影响因子:
48
作者:
Kastner, Berthold;Fischer, Niels;Stark, Holger
通讯作者:
Stark, Holger
影响因子:
7.3
作者:
Phipps, Kathleen R.;Charette, J. Michael;Baserga, Susan J.
通讯作者:
Baserga, Susan J.
影响因子:
14.9
作者:
Pérez-Fernández J;Martín-Marcos P;Dosil M
通讯作者:
Dosil M
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
16
作者:
Grandi, P;Rybin, V;Hurt, E
通讯作者:
Hurt, E