RBS1_BRANA
ID RBS1_BRANA Reviewed; 181 AA.
AC P05346;
DT 01-NOV-1988, integrated into UniProtKB/Swiss-Prot.
DT 01-APR-1993, sequence version 2.
DT 25-MAY-2022, entry version 113.
DE RecName: Full=Ribulose bisphosphate carboxylase small subunit, chloroplastic 1 {ECO:0000255|HAMAP-Rule:MF_00860};
DE Short=RuBisCO small subunit 1 {ECO:0000255|HAMAP-Rule:MF_00860};
DE Flags: Precursor;
GN Name=RBCS1 {ECO:0000255|HAMAP-Rule:MF_00860}; Synonyms=RBCS;
OS Brassica napus (Rape).
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC rosids; malvids; Brassicales; Brassicaceae; Brassiceae; Brassica.
OX NCBI_TaxID=3708;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=cv. Semundo Winterraps; TISSUE=Cotyledon;
RX PubMed=1339323; DOI=10.1007/bf00318476;
RA Fiebig C., Link G.;
RT "5'-upstream cis-elements and binding factor(s) potentially involved in
RT light-regulated expression of a Brassica napus rbcS gene.";
RL Curr. Genet. 21:161-168(1992).
RN [2]
RP NUCLEOTIDE SEQUENCE [MRNA].
RX PubMed=3380701; DOI=10.1093/nar/16.10.4732;
RA Baszczynski C.L., Fallis L., Bellemare G.;
RT "Nucleotide sequence of a full length cDNA clone of a Brassica napus
RT ribulose bisphosphate carboxylase-oxygenase small subunit gene.";
RL Nucleic Acids Res. 16:4732-4732(1988).
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:0000255|HAMAP-Rule:MF_00860}.
CC -!- SUBUNIT: Heterohexadecamer of 8 large and 8 small subunits.
CC {ECO:0000255|HAMAP-Rule:MF_00860}.
CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast {ECO:0000255|HAMAP-
CC Rule:MF_00860}.
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:0000255|HAMAP-Rule:MF_00860}.
CC -!- SIMILARITY: Belongs to the RuBisCO small chain family.
CC {ECO:0000255|HAMAP-Rule:MF_00860}.
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DR EMBL; X61097; CAA43410.1; -; Genomic_DNA.
DR EMBL; X07367; CAA30290.1; -; mRNA.
DR PIR; S00934; RKRPS.
DR PIR; S37292; S37292.
DR RefSeq; XP_013741772.1; XM_013886318.1.
DR AlphaFoldDB; P05346; -.
DR SMR; P05346; -.
DR PRIDE; P05346; -.
DR EnsemblPlants; CDX74532; CDX74532; GSBRNA2T00114447001.
DR EnsemblPlants; CDY01671; CDY01671; GSBRNA2T00112745001.
DR GeneID; 106444894; -.
DR Gramene; CDX74532; CDX74532; GSBRNA2T00114447001.
DR Gramene; CDY01671; CDY01671; GSBRNA2T00112745001.
DR KEGG; bna:106444894; -.
DR OMA; WNPAIEH; -.
DR GO; GO:0009507; C:chloroplast; IEA:UniProtKB-SubCell.
DR GO; GO:0009853; P:photorespiration; IEA:UniProtKB-KW.
DR GO; GO:0019253; P:reductive pentose-phosphate cycle; IEA:UniProtKB-KW.
DR CDD; cd03527; RuBisCO_small; 1.
DR Gene3D; 3.30.190.10; -; 1.
DR HAMAP; MF_00859; RuBisCO_S_bact; 1.
DR InterPro; IPR024681; RuBisCO_ssu.
DR InterPro; IPR000894; RuBisCO_ssu_dom.
DR InterPro; IPR024680; RuBisCO_ssu_N.
DR InterPro; IPR036385; RuBisCO_ssu_sf.
DR PANTHER; PTHR31262; PTHR31262; 1.
DR Pfam; PF12338; RbcS; 1.
DR Pfam; PF00101; RuBisCO_small; 1.
DR PRINTS; PR00152; RUBISCOSMALL.
DR SMART; SM00961; RuBisCO_small; 1.
DR SUPFAM; SSF55239; SSF55239; 1.
PE 2: Evidence at transcript level;
KW Calvin cycle; Carbon dioxide fixation; Chloroplast; Photorespiration;
KW Photosynthesis; Plastid; Transit peptide.
FT TRANSIT 1..54
FT /note="Chloroplast"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00860"
FT CHAIN 55..181
FT /note="Ribulose bisphosphate carboxylase small subunit,
FT chloroplastic 1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00860"
FT /id="PRO_0000031469"
FT CONFLICT 3
FT /note="S -> Y (in Ref. 2; CAA30290)"
FT /evidence="ECO:0000305"
FT CONFLICT 54..57
FT /note="SCMK -> NSMQ (in Ref. 2; CAA30290)"
FT /evidence="ECO:0000305"
SQ SEQUENCE 181 AA; 20227 MW; A6C21441A97FB3E7 CRC64;
MASSMLSSAA VVTSPAQATM VAPFTGLKSS SAFPVTRKAN NDITSIVSNG GRVSCMKVWP
PVGKKKFETL SYLPDLTEVE LGKEVDYLLR NKWIPCVEFE LEHGFVYREH GSTPGYYDGR
YWTMWKLPLF GCTDSAQVLK EVQECKTEYP NAFIRIIGFD NNRQVQCISF IAYKPPSFTG
A
