ID   Q8RVI7_PINPS            Unreviewed;       148 AA.
AC   Q8RVI7;
DT   01-JUN-2002, integrated into UniProtKB/TrEMBL.
DT   01-JUN-2002, sequence version 1.
DT   27-MAR-2024, entry version 79.
DE   RecName: Full=Ribulose bisphosphate carboxylase small subunit {ECO:0000256|RuleBase:RU003627};
DE            Short=RuBisCO small subunit {ECO:0000256|RuleBase:RU003627};
DE   Flags: Fragment;
OS   Pinus pinaster (Maritime pine).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Pinopsida; Pinidae; Conifers I; Pinales; Pinaceae; Pinus;
OC   Pinus subgen. Pinus.
OX   NCBI_TaxID=71647 {ECO:0000313|EMBL:CAC84492.1};
RN   [1] {ECO:0000313|EMBL:CAC84492.1}
RP   NUCLEOTIDE SEQUENCE.
RC   TISSUE=Aerial part {ECO:0000313|EMBL:CAC84492.1};
RA   Dubos C., Le Provost G., Salin F., Lalane C., Madur D., Frigerio J.M.,
RA   Plomion C.;
RT   "Identification and characterization of water-deficit responsive genes in
RT   Maritime pine (Pinus pinaster Ait.) seedlings.";
RL   Submitted (APR-2001) 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|RuleBase:RU003627}.
CC   -!- SUBUNIT: Heterohexadecamer of 8 large and 8 small subunits.
CC       {ECO:0000256|RuleBase:RU003627}.
CC   -!- SIMILARITY: Belongs to the RuBisCO small chain family.
CC       {ECO:0000256|RuleBase:RU003627}.
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DR   EMBL; AJ309096; CAC84492.1; -; mRNA.
DR   AlphaFoldDB; Q8RVI7; -.
DR   GO; GO:0009536; C:plastid; IEA:UniProtKB-KW.
DR   GO; GO:0009853; P:photorespiration; IEA:UniProtKB-UniRule.
DR   GO; GO:0019253; P:reductive pentose-phosphate cycle; IEA:UniProtKB-KW.
DR   CDD; cd03527; RuBisCO_small; 1.
DR   Gene3D; 3.30.190.10; Ribulose bisphosphate carboxylase, small subunit; 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:SF10; RIBULOSE BISPHOSPHATE CARBOXYLASE SMALL SUBUNIT, CHLOROPLASTIC 2; 1.
DR   Pfam; PF00101; RuBisCO_small; 1.
DR   PRINTS; PR00152; RUBISCOSMALL.
DR   SMART; SM00961; RuBisCO_small; 1.
DR   SUPFAM; SSF55239; RuBisCO, small subunit; 1.
PE   2: Evidence at transcript level;
KW   Calvin cycle {ECO:0000256|ARBA:ARBA00022567};
KW   Carbon dioxide fixation {ECO:0000256|ARBA:ARBA00023300,
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          2..148
FT                   /note="Ribulose bisphosphate carboxylase small subunit"
FT                   /evidence="ECO:0000259|SMART:SM00961"
FT   NON_TER         1
FT                   /evidence="ECO:0000313|EMBL:CAC84492.1"
FT   NON_TER         148
FT                   /evidence="ECO:0000313|EMBL:CAC84492.1"
SQ   SEQUENCE   148 AA;  17705 MW;  59B83DE1157DF42D CRC64;
     PKFETLSYLP QLTEEQLVKE VEYLLRNKWV PCLEFDLVSF YFFKIDLWRF ELSYYVENKI
     GTNFYYELCV CMCAQEGSIS RKYNRSPGYY DGRYWVMWKL PMFGCTEASQ VINEVNECAK
     AYPKAFIRVI GFDNVRQVQC ISFIVHKP
//