The host outer membrane proteins OmpA and OmpC are associated with the Shigella phage Sf6 virion.

The host outer membrane proteins OmpA and OmpC are associated with the Shigella phage Sf6 virion.
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宿主外膜蛋白 OmpA 和 OmpC 与志贺氏菌噬菌体 Sf6 病毒体相关。

DOI:
10.1016/j.virol.2010.10.030
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发表时间:
2011
期刊:
影响因子:
3.7
通讯作者:
Tang,Liang
Tang,Liang
中科院分区:
医学3区
文献类型:
--
作者:
Zhao,Haiyan;Sequeira,ReubenD;Galeva,NadezhdaA;Tang,Liang

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Assembly of dsDNA bacteriophage is a precisely programmed process. Potential roles of host cell components in phage assembly haven't been well understood. It was previously reported that two unidentified proteins were present in bacteriophage Sf6 virion (Casjens et al, 2004, J.Mol.Biol. 339, 379–394, Fig. 2A). Using tandem mass spectrometry, we have identified the two proteins as outer membrane proteins (OMPs) OmpA and OmpC from its host Shigella flexneri. The transmission electron cryo-microscopy structure of Sf6 shows significant density at specific sites at the phage capsid inner surface. This density fit well with the characteristic beta-barrel domains of OMPs, thus may be due to the two host proteins. Locations of this density suggest a role in Sf6 morphogenesis reminiscent of phage-encoded cementing proteins. These data indicate a new, OMP-related phage:host linkage, adding to previous knowledge that some lambdoid bacteriophage genomes contain OmpC-like genes that express phage-encoded porins in the lysogenic state.
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