7wzs

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Crystal structure of Chromobacterium violaceum effector CopC in complex with host calmodulin and caspase-7Crystal structure of Chromobacterium violaceum effector CopC in complex with host calmodulin and caspase-7

Structural highlights

7wzs is a 3 chain structure with sequence from Chromobacterium violaceum ATCC 12472 and Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 3.6Å
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

COPC_CHRVO ADP-riboxanase effector that inhibits host cell pyroptosis (PubMed:34671164). Acts by mediating arginine ADP-riboxanation of host CASP4/CASP11, blocking CASP4/CASP11 autoprocessing (PubMed:34671164). This prevents CASP4 activation and ability to recognize and cleave GSDMD, thereby inhibiting LPS-induced pyroptosis (PubMed:34671164). ADP-riboxanation takes place in two steps: CopC first catalyzes ADP-ribosylation of target Arg, and then initiates a deamination to remove one N-omega group (By similarity).[UniProtKB:A0A0H2US87][1]

See Also

References

  1. Li Z, Liu W, Fu J, Cheng S, Xu Y, Wang Z, Liu X, Shi X, Liu Y, Qi X, Liu X, Ding J, Shao F. Shigella evades pyroptosis by arginine ADP-riboxanation of caspase-11. Nature. 2021 Nov;599(7884):290-295. doi: 10.1038/s41586-021-04020-1. Epub 2021, Oct 20. PMID:34671164 doi:http://dx.doi.org/10.1038/s41586-021-04020-1

7wzs, resolution 3.60Å

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OCA