ID   Q5XLE8_COFCA            Unreviewed;        66 AA.
AC   Q5XLE8;
DT   23-NOV-2004, integrated into UniProtKB/TrEMBL.
DT   23-NOV-2004, sequence version 1.
DT   02-DEC-2020, entry version 54.
DE   RecName: Full=Ribulose bisphosphate carboxylase small chain {ECO:0000256|RuleBase:RU003627};
DE            EC=4.1.1.39 {ECO:0000256|RuleBase:RU003627};
DE   Flags: Fragment;
GN   Name=rbsc1 {ECO:0000313|EMBL:AAU89439.1};
OS   Coffea canephora (Robusta coffee).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; lamiids; Gentianales; Rubiaceae; Ixoroideae; Gardenieae complex;
OC   Bertiereae - Coffeeae clade; Coffeeae; Coffea.
OX   NCBI_TaxID=49390 {ECO:0000313|EMBL:AAU89439.1};
RN   [1] {ECO:0000313|EMBL:AAU89439.1}
RP   NUCLEOTIDE SEQUENCE.
RA   Ramirez L.S.;
RT   "Characterization of rubisco small subunit in Coffea sp.";
RL   Submitted (SEP-2004) 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. {ECO:0000256|RuleBase:RU003627}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 (2R)-3-phosphoglycerate + 2 H(+) = CO2 + D-ribulose 1,5-
CC         bisphosphate + H2O; Xref=Rhea:RHEA:23124, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:16526, ChEBI:CHEBI:57870,
CC         ChEBI:CHEBI:58272; EC=4.1.1.39;
CC         Evidence={ECO:0000256|ARBA:ARBA00001067,
CC         ECO:0000256|RuleBase:RU003627};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=D-ribulose 1,5-bisphosphate + O2 = (2R)-3-phosphoglycerate +
CC         2-phosphoglycolate + 2 H(+); Xref=Rhea:RHEA:36631, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:15379, ChEBI:CHEBI:57870, ChEBI:CHEBI:58033,
CC         ChEBI:CHEBI:58272; Evidence={ECO:0000256|ARBA:ARBA00000537,
CC         ECO:0000256|RuleBase:RU003627};
CC   -!- SUBUNIT: 8 large chains + 8 small chains.
CC       {ECO:0000256|RuleBase:RU003627}.
CC   -!- SIMILARITY: Belongs to the RuBisCO small chain family.
CC       {ECO:0000256|ARBA:ARBA00009384, ECO:0000256|RuleBase:RU003627}.
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DR   EMBL; AY753745; AAU89439.1; -; Genomic_DNA.
DR   GO; GO:0009507; C:chloroplast; IEA:UniProtKB-KW.
DR   GO; GO:0004497; F:monooxygenase activity; IEA:UniProtKB-KW.
DR   GO; GO:0016984; F:ribulose-bisphosphate carboxylase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0015977; P:carbon fixation; IEA:UniProtKB-KW.
DR   GO; GO:0009853; P:photorespiration; IEA:UniProtKB-UniRule.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR   Gene3D; 3.30.190.10; -; 1.
DR   InterPro; IPR024681; RuBisCO_sc.
DR   InterPro; IPR000894; RuBisCO_sc_dom.
DR   InterPro; IPR036385; RuBisCO_ssu_sf.
DR   Pfam; PF00101; RuBisCO_small; 1.
DR   PRINTS; PR00152; RUBISCOSMALL.
DR   SUPFAM; SSF55239; SSF55239; 1.
PE   3: Inferred from homology;
KW   Carbon dioxide fixation {ECO:0000256|RuleBase:RU003627};
KW   Lyase {ECO:0000256|RuleBase:RU003627};
KW   Monooxygenase {ECO:0000256|RuleBase:RU003627};
KW   Oxidoreductase {ECO:0000256|ARBA:ARBA00023002,
KW   ECO:0000256|RuleBase:RU003627};
KW   Photorespiration {ECO:0000256|ARBA:ARBA00023238,
KW   ECO:0000256|RuleBase:RU003627};
KW   Photosynthesis {ECO:0000256|ARBA:ARBA00022531,
KW   ECO:0000256|RuleBase:RU003627}; Plastid {ECO:0000256|RuleBase:RU003627}.
FT   DOMAIN          7..66
FT                   /note="RuBisCO_small"
FT                   /evidence="ECO:0000259|Pfam:PF00101"
FT   NON_TER         1
FT                   /evidence="ECO:0000313|EMBL:AAU89439.1"
FT   NON_TER         66
FT                   /evidence="ECO:0000313|EMBL:AAU89439.1"
SQ   SEQUENCE   66 AA;  8143 MW;  1DC2BDA45D31BA45 CRC64;
     PRGLKKYETL SYLPDLTDEQ LLKEIDYLIR SGWVPCLEFE LEKGFVYREY HRSPGYYDGR
     YWTMWK
//