ID B0CCB9_ACAM1 Unreviewed; 115 AA.
AC B0CCB9;
DT 26-FEB-2008, integrated into UniProtKB/TrEMBL.
DT 26-FEB-2008, sequence version 1.
DT 24-JAN-2024, entry version 72.
DE RecName: Full=Ribulose bisphosphate carboxylase small subunit {ECO:0000256|HAMAP-Rule:MF_00859};
DE Short=RuBisCO small subunit {ECO:0000256|HAMAP-Rule:MF_00859};
GN Name=rbcS {ECO:0000256|HAMAP-Rule:MF_00859,
GN ECO:0000313|EMBL:ABW26804.1};
GN Synonyms=cbbS {ECO:0000256|HAMAP-Rule:MF_00859};
GN OrderedLocusNames=AM1_1783 {ECO:0000313|EMBL:ABW26804.1};
OS Acaryochloris marina (strain MBIC 11017).
OC Bacteria; Cyanobacteriota; Cyanophyceae; Acaryochloridales;
OC Acaryochloridaceae; Acaryochloris.
OX NCBI_TaxID=329726 {ECO:0000313|EMBL:ABW26804.1, ECO:0000313|Proteomes:UP000000268};
RN [1] {ECO:0000313|EMBL:ABW26804.1, ECO:0000313|Proteomes:UP000000268}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MBIC 11017 {ECO:0000313|Proteomes:UP000000268};
RX PubMed=18252824; DOI=10.1073/pnas.0709772105;
RA Swingley W.D., Chen M., Cheung P.C., Conrad A.L., Dejesa L.C., Hao J.,
RA Honchak B.M., Karbach L.E., Kurdoglu A., Lahiri S., Mastrian S.D.,
RA Miyashita H., Page L., Ramakrishna P., Satoh S., Sattley W.M., Shimada Y.,
RA Taylor H.L., Tomo T., Tsuchiya T., Wang Z.T., Raymond J., Mimuro M.,
RA Blankenship R.E., Touchman J.W.;
RT "Niche adaptation and genome expansion in the chlorophyll d-producing
RT cyanobacterium Acaryochloris marina.";
RL Proc. Natl. Acad. Sci. U.S.A. 105:2005-2010(2008).
CC -!- FUNCTION: RuBisCO catalyzes two reactions: the carboxylation of D-
CC ribulose 1,5-bisphosphate, the primary event in carbon dioxide
CC fixation, as well as the oxidative fragmentation of the pentose
CC substrate in the photorespiration process. Both reactions occur
CC simultaneously and in competition at the same active site. Although the
CC small subunit is not catalytic it is essential for maximal activity.
CC {ECO:0000256|HAMAP-Rule:MF_00859}.
CC -!- SUBUNIT: Heterohexadecamer of 8 large and 8 small subunits.
CC {ECO:0000256|HAMAP-Rule:MF_00859}.
CC -!- SUBCELLULAR LOCATION: Carboxysome {ECO:0000256|HAMAP-Rule:MF_00859}.
CC -!- MISCELLANEOUS: The basic functional RuBisCO is composed of a large
CC chain homodimer in a 'head-to-tail' conformation. In form I RuBisCO
CC this homodimer is arranged in a barrel-like tetramer with the small
CC subunits forming a tetrameric 'cap' on each end of the 'barrel'.
CC {ECO:0000256|HAMAP-Rule:MF_00859}.
CC -!- SIMILARITY: Belongs to the RuBisCO small chain family.
CC {ECO:0000256|HAMAP-Rule:MF_00859}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; CP000828; ABW26804.1; -; Genomic_DNA.
DR RefSeq; WP_012162315.1; NC_009925.1.
DR AlphaFoldDB; B0CCB9; -.
DR STRING; 329726.AM1_1783; -.
DR KEGG; amr:AM1_1783; -.
DR eggNOG; COG4451; Bacteria.
DR HOGENOM; CLU_098114_2_0_3; -.
DR OMA; KQCQVLS; -.
DR OrthoDB; 9788955at2; -.
DR Proteomes; UP000000268; Chromosome.
DR GO; GO:0031470; C:carboxysome; IEA:UniProtKB-SubCell.
DR GO; GO:0016984; F:ribulose-bisphosphate carboxylase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0009853; P:photorespiration; IEA:UniProtKB-KW.
DR GO; GO:0019253; P:reductive pentose-phosphate cycle; IEA:UniProtKB-UniRule.
DR CDD; cd03527; RuBisCO_small; 1.
DR Gene3D; 3.30.190.10; Ribulose bisphosphate carboxylase, small subunit; 1.
DR HAMAP; MF_00859; RuBisCO_S_bact; 1.
DR InterPro; IPR024681; RuBisCO_ssu.
DR InterPro; IPR000894; RuBisCO_ssu_dom.
DR InterPro; IPR036385; RuBisCO_ssu_sf.
DR PANTHER; PTHR31262; RIBULOSE BISPHOSPHATE CARBOXYLASE SMALL CHAIN 1, CHLOROPLASTIC; 1.
DR Pfam; PF00101; RuBisCO_small; 1.
DR SMART; SM00961; RuBisCO_small; 1.
DR SUPFAM; SSF55239; RuBisCO, small subunit; 1.
PE 3: Inferred from homology;
KW Bacterial microcompartment {ECO:0000256|HAMAP-Rule:MF_00859};
KW Calvin cycle {ECO:0000256|ARBA:ARBA00022567, ECO:0000256|HAMAP-
KW Rule:MF_00859};
KW Carbon dioxide fixation {ECO:0000256|ARBA:ARBA00023300, ECO:0000256|HAMAP-
KW Rule:MF_00859}; Carboxysome {ECO:0000256|HAMAP-Rule:MF_00859};
KW Photorespiration {ECO:0000256|HAMAP-Rule:MF_00859};
KW Photosynthesis {ECO:0000256|HAMAP-Rule:MF_00859};
KW Reference proteome {ECO:0000313|Proteomes:UP000000268}.
FT DOMAIN 9..106
FT /note="Ribulose bisphosphate carboxylase small subunit"
FT /evidence="ECO:0000259|SMART:SM00961"
SQ SEQUENCE 115 AA; 13774 MW; EF7FF895480A0AEF CRC64;
MRTLPIERRF ETFSYLPPLN DEQIRRQIQY ILDQGYIAGI EFNDSPEPTA YYWTMWKLPL
FKNPSVQDVL YEIDECRSEY SDKYVRVVGF DNIRQCQVMS FIVHKPGSNS GYRPY
//