ID   F9ZKP7_9PROT            Unreviewed;       144 AA.
AC   F9ZKP7;
DT   19-OCT-2011, integrated into UniProtKB/TrEMBL.
DT   19-OCT-2011, sequence version 1.
DT   24-JAN-2024, entry version 44.
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=NAL212_2943 {ECO:0000313|EMBL:ADZ27728.1};
OS   Nitrosomonas sp. AL212.
OC   Bacteria; Pseudomonadota; Betaproteobacteria; Nitrosomonadales;
OC   Nitrosomonadaceae; Nitrosomonas.
OX   NCBI_TaxID=153948 {ECO:0000313|EMBL:ADZ27728.1, ECO:0000313|Proteomes:UP000001629};
RN   [1] {ECO:0000313|EMBL:ADZ27728.1, ECO:0000313|Proteomes:UP000001629}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=AL212 {ECO:0000313|EMBL:ADZ27728.1,
RC   ECO:0000313|Proteomes:UP000001629};
RA   Lucas S., Copeland A., Lapidus A., Cheng J.-F., Goodwin L., Pitluck S.,
RA   Chertkov O., Held B., Detter J.C., Han C., Tapia R., Land M., Hauser L.,
RA   Kyrpides N., Ivanova N., Mikhailova N., Pagani I., Suwa Y., Klotz M.G.,
RA   Bollmann A., Stein L.Y., Laanbroek H.J., Arp D.J., Norton J.M., Woyke T.;
RT   "Complete sequence of chromosome of Nitrosomonas sp. AL212.";
RL   Submitted (FEB-2011) 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|ARBA:ARBA00038826, 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; CP002552; ADZ27728.1; -; Genomic_DNA.
DR   AlphaFoldDB; F9ZKP7; -.
DR   STRING; 153948.NAL212_2943; -.
DR   KEGG; nit:NAL212_2943; -.
DR   eggNOG; COG4451; Bacteria.
DR   HOGENOM; CLU_098114_2_0_4; -.
DR   Proteomes; UP000001629; 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   PANTHER; PTHR31262:SF23; RIBULOSE BISPHOSPHATE CARBOXYLASE SMALL SUBUNIT; 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:ADZ27728.1};
KW   Reference proteome {ECO:0000313|Proteomes:UP000001629}.
FT   DOMAIN          10..109
FT                   /note="Ribulose bisphosphate carboxylase small subunit"
FT                   /evidence="ECO:0000259|SMART:SM00961"
SQ   SEQUENCE   144 AA;  16414 MW;  1F7EFDFCAA193299 CRC64;
     MMTNQGNLLT QGQFSFLPPL TDKQISAQLK YALKNGWAIG IEYTDDPHPR NTYWEMFGNP
     MFDLKDPAGI LLEINSCRKT FPNHYIRVTA FNSTRGVESP TMSYIVNRPK KEPGFSLVRQ
     EGAGRSVSYT IHSYATDKPE AERY
//