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HAMAP rule MF_00854

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General rule information [?]

Accession MF_00854
Dates 18-AUG-2020 (Created)
17-FEB-2023 (Last updated, Version 4)
Name CcmK
Bacteria; Cyanobacteriota
Templates Q03511 (CCMK2_SYNE7); Q31RK3 (CCMK3_SYNE7); Q31RK2 (CCMK4_SYNE7): [Recover all]

Propagated annotation [?]

Identifier, protein and gene names [?]

Protein name
RecName: Full=Carboxysome shell protein CcmK;
AltName: Full=Carbon dioxide-concentrating mechanism protein CcmK;
Gene name

Comments [?]

Function One of the shell proteins of the carboxysome, a polyhedral inclusion where RuBisCO (ribulose bisphosphate carboxylase, rbcL-rbcS) is sequestered. Assembles into hexamers which make sheets that form the facets of the polyhedral carboxysome. The hexamer central pore probably regulates metabolite flux.
Subunit Homohexamer. Interacts with CcmN and CcmO in the carboxysome.
Subcellular location Carboxysome.
Domain The tight homohexamer forms a small pore which is positively charged.
Similarity Belongs to the bacterial microcompartments protein family. CcmK subfamily.

Keywords [?]

Gene Ontology [?]

GO:0031470; Cellular component: carboxysome.
GO:0043886; Molecular function: structural constituent of carboxysome shell.
GO:0015977; Biological process: carbon fixation.

Cross-references [?]

PROSITE PS01139; BMC_1; 0-1;
PS51930; BMC_2; 1; trigger=PRU01278;
Pfam PF00936; BMC; 1;

Additional information [?]

Size range 100-120 amino acids
Related rules None
Fusion None