Structural basis of Fic-mediated adenylylation.
Structural basis of Fic-mediated adenylylation.
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DOI:
10.1038/nsmb.1867
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发表时间:
2010-08
影响因子:
16.8
通讯作者:
中科院分区:
文献类型:
--
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The Fic family of adenylyltransferases, defined by a core HPFx(D/E)GN(G/K)R motif, consist of over 2700 proteins found from bacteria to humans. IbpA from the bacterial pathogen Histophilus somni contains two Fic domains that adenylylate the switch1 Tyr residue of Rho-family GTPases, allowing the bacteria to subvert host defenses. Here we present the structure of the second Fic domain of IbpA (IbpAFic2) in complex with its substrate, Cdc42. IbpAFic2-bound Cdc42 mimics the GDI-bound state of Rho GTPases, with both its switch1 and switch2 regions gripped by IbpAFic2. Mutations disrupting the IbpAFic2-Cdc42 interface impair adenylylation and cytotoxicity. Importantly, the switch1 Tyr of Cdc42 is adenylylated in the structure, providing the first structural view for this post-translational modification. We also demonstrate that the nucleotide-binding mechanism is conserved among Fic proteins, and propose a catalytic mechanism for this recently discovered family of enzymes.
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影响因子:
5.7
作者:
Lee, CC;Wood, MD;Katagiri, F
通讯作者:
Katagiri, F
DOI:
10.1073/pnas.68.12.2949
发表时间:
1971-01-01
影响因子:
11.1
作者:
BROWN, MS;SEGAL, A;STADTMAN, ER
通讯作者:
STADTMAN, ER
DOI:
10.1016/0065-2571(68)90017-4
发表时间:
1968-01-01
期刊:
Advances in enzyme regulation
影响因子:
--
作者:
Stadtman, E R;Shapiro, B M;Hubbard, J S
通讯作者:
Hubbard, J S
影响因子:
3.8
作者:
Tagawa, Y;Sanders, JD;Corbeil, LB
通讯作者:
Corbeil, LB
影响因子:
30.3
作者:
Galan, Jorge E.
通讯作者:
Galan, Jorge E.