ID   I1XG50_METNJ            Unreviewed;       118 AA.
AC   I1XG50;
DT   11-JUL-2012, integrated into UniProtKB/TrEMBL.
DT   11-JUL-2012, sequence version 1.
DT   27-MAR-2024, entry version 47.
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   OrderedLocusNames=Q7A_523 {ECO:0000313|EMBL:AFI83369.1};
GN   ORFNames=CDW43_02365 {ECO:0000313|EMBL:AUZ83486.1};
OS   Methylophaga nitratireducenticrescens.
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Thiotrichales;
OC   Piscirickettsiaceae; Methylophaga.
OX   NCBI_TaxID=754476 {ECO:0000313|EMBL:AFI83369.1, ECO:0000313|Proteomes:UP000009144};
RN   [1] {ECO:0000313|EMBL:AFI83369.1, ECO:0000313|Proteomes:UP000009144}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=JAM1 {ECO:0000313|EMBL:AFI83369.1,
RC   ECO:0000313|Proteomes:UP000009144};
RX   PubMed=22815445; DOI=10.1128/JB.00726-12;
RA   Villeneuve C., Martineau C., Mauffrey F., Villemur R.;
RT   "Complete genome sequences of Methylophaga sp. strain JAM1 and Methylophaga
RT   sp. strain JAM7.";
RL   J. Bacteriol. 194:4126-4127(2012).
RN   [2] {ECO:0000313|EMBL:AFI83369.1}
RP   NUCLEOTIDE SEQUENCE.
RC   STRAIN=JAM1 {ECO:0000313|EMBL:AFI83369.1};
RX   PubMed=23148104; DOI=10.1099/ijs.0.044545-0;
RA   Villeneuve C., Martineau C., Mauffrey F., Villemur R.;
RT   "Methylophaga nitratireducenticrescens sp. nov. and Methylophaga frappieri
RT   sp. nov., isolated from the biofilm of the methanol-fed denitrification
RT   system treating the seawater at the Montreal Biodome.";
RL   Int. J. Syst. Evol. Microbiol. 63:2216-2222(2013).
RN   [3] {ECO:0000313|EMBL:AFI83369.1}
RP   NUCLEOTIDE SEQUENCE.
RC   STRAIN=JAM1 {ECO:0000313|EMBL:AFI83369.1};
RA   Villeneuve C., Villemur R.;
RL   Submitted (JUN-2015) to the EMBL/GenBank/DDBJ databases.
RN   [4] {ECO:0000313|EMBL:AUZ83486.1, ECO:0000313|Proteomes:UP000238402}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=GP59 {ECO:0000313|EMBL:AUZ83486.1,
RC   ECO:0000313|Proteomes:UP000238402};
RA   Villemur R.;
RT   "The sequence of the genome of Methylophaga nitratireducenticrescens GP59
RT   and its two plasmids.";
RL   Submitted (JUN-2017) 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}.
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; CP003390; AFI83369.1; -; Genomic_DNA.
DR   EMBL; CP021973; AUZ83486.1; -; Genomic_DNA.
DR   RefSeq; WP_014705744.1; NZ_CP021973.1.
DR   AlphaFoldDB; I1XG50; -.
DR   STRING; 754476.Q7A_523; -.
DR   KEGG; mej:Q7A_523; -.
DR   PATRIC; fig|754476.3.peg.514; -.
DR   eggNOG; COG4451; Bacteria.
DR   HOGENOM; CLU_098114_2_0_6; -.
DR   OrthoDB; 9788955at2; -.
DR   Proteomes; UP000009144; Chromosome.
DR   Proteomes; UP000238402; Chromosome.
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}; Lyase {ECO:0000313|EMBL:AFI83369.1}.
FT   DOMAIN          18..115
FT                   /note="Ribulose bisphosphate carboxylase small subunit"
FT                   /evidence="ECO:0000259|SMART:SM00961"
SQ   SEQUENCE   118 AA;  13593 MW;  85591D8FCEC4A07B CRC64;
     MSEMQDYASS LADTSSRKFE TFSYLPEMDA ARIRKQVEYI VSKGWNPAVE HTEPENAFGH
     YWYMWKLPLF GETDVDRILA EAEACHKAHP KNHVRLVGYD NYAQSKGAEM VVFRGQSV
//