ID B4W1U6_9CYAN Unreviewed; 103 AA.
AC B4W1U6;
DT 23-SEP-2008, integrated into UniProtKB/TrEMBL.
DT 23-SEP-2008, sequence version 1.
DT 24-JAN-2024, entry version 38.
DE RecName: Full=Carboxysome shell protein CcmK {ECO:0000256|HAMAP-Rule:MF_00854};
DE AltName: Full=Carbon dioxide-concentrating mechanism protein CcmK {ECO:0000256|HAMAP-Rule:MF_00854};
GN Name=ccmK {ECO:0000256|HAMAP-Rule:MF_00854};
GN ORFNames=MC7420_6884 {ECO:0000313|EMBL:EDX71798.1};
OS Coleofasciculus chthonoplastes PCC 7420.
OC Bacteria; Cyanobacteriota; Cyanophyceae; Coleofasciculales;
OC Coleofasciculaceae; Coleofasciculus.
OX NCBI_TaxID=118168 {ECO:0000313|EMBL:EDX71798.1, ECO:0000313|Proteomes:UP000003835};
RN [1] {ECO:0000313|EMBL:EDX71798.1, ECO:0000313|Proteomes:UP000003835}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PCC 7420 {ECO:0000313|EMBL:EDX71798.1,
RC ECO:0000313|Proteomes:UP000003835};
RA Tandeau de Marsac N., Ferriera S., Johnson J., Kravitz S., Beeson K.,
RA Sutton G., Rogers Y.-H., Friedman R., Frazier M., Venter J.C.;
RL Submitted (JUL-2008) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: One of the shell proteins of the carboxysome, a polyhedral
CC inclusion where RuBisCO (ribulose bisphosphate carboxylase, rbcL-rbcS)
CC is sequestered. Assembles into hexamers which make sheets that form the
CC facets of the polyhedral carboxysome. The hexamer central pore probably
CC regulates metabolite flux. {ECO:0000256|HAMAP-Rule:MF_00854}.
CC -!- SUBUNIT: Homohexamer. Interacts with CcmN and CcmO in the carboxysome.
CC {ECO:0000256|HAMAP-Rule:MF_00854}.
CC -!- SUBCELLULAR LOCATION: Carboxysome {ECO:0000256|ARBA:ARBA00023587,
CC ECO:0000256|HAMAP-Rule:MF_00854}.
CC -!- DOMAIN: The tight homohexamer forms a small pore which is positively
CC charged. {ECO:0000256|HAMAP-Rule:MF_00854}.
CC -!- SIMILARITY: Belongs to the bacterial microcompartments protein family.
CC CcmK subfamily. {ECO:0000256|HAMAP-Rule:MF_00854}.
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DR EMBL; DS989869; EDX71798.1; -; Genomic_DNA.
DR RefSeq; WP_006105229.1; NZ_DS989869.1.
DR AlphaFoldDB; B4W1U6; -.
DR STRING; 118168.MC7420_6884; -.
DR eggNOG; COG4577; Bacteria.
DR HOGENOM; CLU_064903_5_3_3; -.
DR OrthoDB; 7057533at2; -.
DR Proteomes; UP000003835; Unassembled WGS sequence.
DR GO; GO:0031470; C:carboxysome; IEA:UniProtKB-SubCell.
DR GO; GO:0043886; F:structural constituent of carboxysome shell; IEA:UniProtKB-UniRule.
DR GO; GO:0015977; P:carbon fixation; IEA:UniProtKB-UniRule.
DR GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR CDD; cd07057; BMC_CcmK; 1.
DR Gene3D; 3.30.70.1710; -; 1.
DR HAMAP; MF_00854; CcmK; 1.
DR InterPro; IPR020808; Bact_microcomp_CS.
DR InterPro; IPR000249; BMC_dom.
DR InterPro; IPR046380; CcmK.
DR InterPro; IPR037233; CcmK-like_sf.
DR InterPro; IPR044872; CcmK/CsoS1_BMC.
DR PANTHER; PTHR33941:SF13; CARBOXYSOME SHELL PROTEIN CCMK4; 1.
DR PANTHER; PTHR33941; PROPANEDIOL UTILIZATION PROTEIN PDUA; 1.
DR Pfam; PF00936; BMC; 1.
DR SMART; SM00877; BMC; 1.
DR SUPFAM; SSF143414; CcmK-like; 1.
DR PROSITE; PS01139; BMC_1; 1.
DR PROSITE; PS51930; BMC_2; 1.
PE 3: Inferred from homology;
KW Bacterial microcompartment {ECO:0000256|ARBA:ARBA00024446};
KW Carbon dioxide fixation {ECO:0000256|ARBA:ARBA00023300, ECO:0000256|HAMAP-
KW Rule:MF_00854}; Carboxysome {ECO:0000256|HAMAP-Rule:MF_00854};
KW Photosynthesis {ECO:0000256|HAMAP-Rule:MF_00854};
KW Reference proteome {ECO:0000313|Proteomes:UP000003835}.
FT DOMAIN 4..90
FT /note="BMC"
FT /evidence="ECO:0000259|PROSITE:PS51930"
SQ SEQUENCE 103 AA; 11001 MW; 3FBA9BCA0FDEFF17 CRC64;
MPIAVGMIET KGFPAVVEAA DAMVKAARVT LVGYEKIGSA RVTVIVRGDV SEVQASVAAG
VESANRVNGG EVVSTHIIAR PHENLEYVLP IRYSEAVEQF RSY
//
