Structure of D-AKAP2:PKA RI complex: insights into AKAP specificity and selectivity.
Structure of D-AKAP2:PKA RI complex: insights into AKAP specificity and selectivity.
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DOI:
10.1016/j.str.2009.12.012
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发表时间:
2010-02-10
期刊:
影响因子:
--
通讯作者:
Taylor SS
中科院分区:
文献类型:
--
作者:
Sarma GN;Kinderman FS;Kim C;von Daake S;Chen L;Wang BC;Taylor SS
A-kinase anchoring proteins (AKAPs) regulate cyclic AMP-dependent protein kinase (PKA) signaling in space and time. Dual-specific AKAP 2 (D-AKAP2) binds to the dimerization/docking (D/D) domain of both RI and RII regulatory subunits of PKA with high affinity. Here, we have determined the structures of the RIα D/D domain alone and in complex with D-AKAP2. The D/D domain presents an extensive surface for binding through a well-formed N-termina helix and this surface restricts the diversity of AKAPs that can interact. The structures also underscore the importance of a redox-sensitive disulfide in affecting AKAP binding. An unexpected shift in the helical register of D-AKAP2 compared to the RIIα:D-AKAP2 complex structure makes the mode of binding to RIα novel. Finally, the comparison allows us to deduce a molecular explanation for the sequence and spatial determinants of AKAP specificity.
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DOI:
10.1073/pnas.2628038100
发表时间:
2003-04-01
影响因子:
11.1
作者:
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通讯作者:
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影响因子:
4.8
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影响因子:
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作者:
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通讯作者:
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影响因子:
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通讯作者:
Taskén, K
影响因子:
5.6
作者:
HARRIS, NL;PRESNELL, SR;COHEN, FE
通讯作者:
COHEN, FE