ID A0A1Y6CV65_9GAMM Unreviewed; 114 AA.
AC A0A1Y6CV65;
DT 30-AUG-2017, integrated into UniProtKB/TrEMBL.
DT 30-AUG-2017, sequence version 1.
DT 24-JAN-2024, entry version 14.
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=cbbS {ECO:0000256|HAMAP-Rule:MF_00859};
GN ORFNames=SAMN02949497_1867 {ECO:0000313|EMBL:SMF94549.1};
OS Methylomagnum ishizawai.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Methylococcales;
OC Methylococcaceae; Methylomagnum.
OX NCBI_TaxID=1760988 {ECO:0000313|EMBL:SMF94549.1, ECO:0000313|Proteomes:UP000192923};
RN [1] {ECO:0000313|EMBL:SMF94549.1, ECO:0000313|Proteomes:UP000192923}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=175 {ECO:0000313|EMBL:SMF94549.1,
RC ECO:0000313|Proteomes:UP000192923};
RA Song W.-J., Kurnit D.M.;
RL Submitted (DEC-2016) to the EMBL/GenBank/DDBJ databases.
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. Both reactions occur simultaneously and in competition at
CC the same active site. Although the small subunit is not catalytic it is
CC essential for maximal activity. {ECO:0000256|HAMAP-Rule:MF_00859}.
CC -!- SUBUNIT: Heterohexadecamer of 8 large and 8 small subunits.
CC {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}.
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DR EMBL; FXAM01000001; SMF94549.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1Y6CV65; -.
DR STRING; 1760988.SAMN02949497_1867; -.
DR OrthoDB; 9788955at2; -.
DR Proteomes; UP000192923; Unassembled WGS sequence.
DR GO; GO:0016984; F:ribulose-bisphosphate carboxylase activity; IEA:UniProtKB-UniRule.
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 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}; Reference proteome {ECO:0000313|Proteomes:UP000192923}.
FT DOMAIN 13..110
FT /note="Ribulose bisphosphate carboxylase small subunit"
FT /evidence="ECO:0000259|SMART:SM00961"
SQ SEQUENCE 114 AA; 13192 MW; DDBCA4BC56050583 CRC64;
MSEIRDFSPS SRKLGTFSYL KEMEPERIRK QVEYIVRRGW NPAVEHSEPE NAFDHYWYMW
KLPLFGETDV DKILAEAAAC RAAHPHNHVR LVGYDTRRQS QGAALVVYRG LAAA
//
