RBS1_NICSY
ID RBS1_NICSY Reviewed; 180 AA.
AC P69250; P00866; P00867; P26666;
DT 21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT 21-JUL-1986, sequence version 1.
DT 25-MAY-2022, entry version 66.
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 Nicotiana sylvestris (Wood tobacco) (South American tobacco).
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC asterids; lamiids; Solanales; Solanaceae; Nicotianoideae; Nicotianeae;
OC Nicotiana.
OX NCBI_TaxID=4096;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RX PubMed=6549380; DOI=10.1016/0300-9084(84)90148-2;
RA Pinck M., Guilley E., Durr A., Hoff M., Pinck L., Fleck J.;
RT "Complete sequence of one of the mRNAs coding for the small subunit of
RT ribulose bisphosphate carboxylase of Nicotiana sylvestris.";
RL Biochimie 66:539-545(1984).
RN [2]
RP NUCLEOTIDE SEQUENCE [MRNA] OF 95-180.
RA Pinck L., Fleck J., Pinck M., Hadidane R., Hirth L.;
RT "Sequence of a cDNA clone encoding part of the small subunit of the
RT ribulose-1,5-bisphosphate carboxylase of Nicotiana sylvestris.";
RL FEBS Lett. 154:145-148(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; X01722; CAA25862.1; -; mRNA.
DR EMBL; J01308; AAA34111.1; -; mRNA.
DR PIR; A01085; RKNTSS.
DR RefSeq; XP_009772497.1; XM_009774195.1.
DR RefSeq; XP_009795055.1; XM_009796753.1.
DR RefSeq; XP_009795056.1; XM_009796754.1.
DR AlphaFoldDB; P69250; -.
DR SMR; P69250; -.
DR STRING; 4096.XP_009772497.1; -.
DR GeneID; 104222872; -.
DR GeneID; 104241798; -.
DR GeneID; 104241799; -.
DR KEGG; nsy:104222872; -.
DR KEGG; nsy:104241798; -.
DR KEGG; nsy:104241799; -.
DR eggNOG; ENOG502QT0M; Eukaryota.
DR Proteomes; UP000189701; Unplaced.
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; Reference proteome; Transit peptide.
FT TRANSIT 1..56
FT /note="Chloroplast"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00860"
FT CHAIN 57..180
FT /note="Ribulose bisphosphate carboxylase small subunit,
FT chloroplastic 1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00860"
FT /id="PRO_0000031535"
SQ SEQUENCE 180 AA; 20311 MW; 26CF3F48EF0860AD CRC64;
MASSVLSSAA VATRSNVAQA NMVAPFTGLK SAASFPVSRK QNLDITSIAS NGGRVQCMQV
WPPINKKKYE TLSYLPDLSQ EQLLSEVEYL LKNGWVPCLE FETEHGFVYR ENNKSPGYYD
GRYWTMWKLP MFGCTDATQV LAEVEEAKKA YPQAWIRIIG FDNVRQVQCI SFIAYKPEGY
