ID A0A0S8KYC5_9PROT Unreviewed; 118 AA.
AC A0A0S8KYC5;
DT 17-FEB-2016, integrated into UniProtKB/TrEMBL.
DT 17-FEB-2016, sequence version 1.
DT 24-JAN-2024, entry version 19.
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=AMJ72_11985 {ECO:0000313|EMBL:KPL26883.1};
OS Acidithiobacillales bacterium SM1_46.
OC Bacteria; Pseudomonadota; Acidithiobacillia; Acidithiobacillales.
OX NCBI_TaxID=1703384 {ECO:0000313|EMBL:KPL26883.1, ECO:0000313|Proteomes:UP000052054};
RN [1] {ECO:0000313|EMBL:KPL26883.1, ECO:0000313|Proteomes:UP000052054}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SM1_46 {ECO:0000313|EMBL:KPL26883.1};
RX PubMed=25922666; DOI=10.1186/s40168-015-0077-6;
RA Baker B.J., Lazar C.S., Teske A.P., Dick G.J.;
RT "Genomic resolution of linkages in carbon, nitrogen, and sulfur cycling
RT among widespread estuary sediment bacteria.";
RL Microbiome 3:14-14(2015).
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 -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:KPL26883.1}.
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DR EMBL; LJVB01000137; KPL26883.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A0S8KYC5; -.
DR PATRIC; fig|1703384.3.peg.870; -.
DR Proteomes; UP000052054; 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}.
FT DOMAIN 18..115
FT /note="Ribulose bisphosphate carboxylase small subunit"
FT /evidence="ECO:0000259|SMART:SM00961"
SQ SEQUENCE 118 AA; 13751 MW; 8E2057CD8BF96805 CRC64;
MSEMQDYNSR VSDSASRKFE TFSYLPAMKQ DEIKKQVAYL VSKGWNPAIE HTEPENAFDH
YWYMWKLPMF GETSVDKILA EAEACHKANP DNHVRLVGYD NYKQSQGTAM VIYRGKMK
//
