RBS2_WHEAT
ID RBS2_WHEAT Reviewed; 175 AA.
AC P26667;
DT 01-AUG-1992, integrated into UniProtKB/Swiss-Prot.
DT 01-AUG-1992, sequence version 1.
DT 03-AUG-2022, entry version 98.
DE RecName: Full=Ribulose bisphosphate carboxylase small subunit, chloroplastic 2 {ECO:0000255|HAMAP-Rule:MF_00860};
DE Short=RuBisCO small subunit 2 {ECO:0000255|HAMAP-Rule:MF_00860};
DE Flags: Precursor;
GN Name=RBCS2 {ECO:0000255|HAMAP-Rule:MF_00860};
OS Triticum aestivum (Wheat).
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; Liliopsida; Poales; Poaceae; BOP clade;
OC Pooideae; Triticodae; Triticeae; Triticinae; Triticum.
OX NCBI_TaxID=4565;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=cv. Era;
RA Broglie R., Coruzzi G., Lamppa G., Keith B., Chua N.H.;
RT "Structural analysis of nuclear genes coding for the precursor to the small
RT subunit of wheat ribulose-1,5-bisphosphate carboxylase.";
RL Biotechnology (N.Y.) 1:55-61(1983).
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; M37477; AAA34302.1; -; Genomic_DNA.
DR PIR; S00505; RKWTS9.
DR AlphaFoldDB; P26667; -.
DR SMR; P26667; -.
DR STRING; 4565.Traes_2AS_C3EF3A27F.1; -.
DR PRIDE; P26667; -.
DR eggNOG; ENOG502QT0M; Eukaryota.
DR Proteomes; UP000019116; Unplaced.
DR ExpressionAtlas; P26667; baseline and differential.
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; IPR036385; RuBisCO_ssu_sf.
DR PANTHER; PTHR31262; PTHR31262; 1.
DR Pfam; PF00101; RuBisCO_small; 1.
DR PRINTS; PR00152; RUBISCOSMALL.
DR SMART; SM00961; RuBisCO_small; 1.
DR SUPFAM; SSF55239; SSF55239; 1.
PE 3: Inferred from homology;
KW Calvin cycle; Carbon dioxide fixation; Chloroplast; Photorespiration;
KW Photosynthesis; Plastid; Reference proteome; Transit peptide.
FT TRANSIT 1..46
FT /note="Chloroplast"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00860"
FT CHAIN 47..175
FT /note="Ribulose bisphosphate carboxylase small subunit,
FT chloroplastic 2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00860"
FT /id="PRO_0000031563"
SQ SEQUENCE 175 AA; 19454 MW; 2C777AA209E4EE5B CRC64;
MAPAVMASSA TTVAPFQGLK STAGLPISCR SGSTGLSSVS NGGRIRCMQV WPIEGIKKFE
TLSYLPPLST EALLKQVDYL IRSKWVPCLE FSKVGFVFRE HNSSPGYYDG RYWTMWKLPM
FGCTDATQVL NEVEEVKKEY PDAYVRVIGF DNMRQVQCVS FIAFRPPGCE ESGKA
