RBS4_FLAPR
ID RBS4_FLAPR Reviewed; 178 AA.
AC Q39746;
DT 15-DEC-1998, integrated into UniProtKB/Swiss-Prot.
DT 01-NOV-1996, sequence version 1.
DT 25-MAY-2022, entry version 93.
DE RecName: Full=Ribulose bisphosphate carboxylase small subunit, chloroplastic 4 {ECO:0000255|HAMAP-Rule:MF_00860};
DE Short=RuBisCO small subunit 4 {ECO:0000255|HAMAP-Rule:MF_00860};
DE Flags: Precursor;
GN Name=RBCS4 {ECO:0000255|HAMAP-Rule:MF_00860};
OS Flaveria pringlei.
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC asterids; campanulids; Asterales; Asteraceae; Asteroideae;
OC Heliantheae alliance; Tageteae; Flaveria.
OX NCBI_TaxID=4226;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RC TISSUE=Leaf;
RA McGonigle B., Lai L.B., Nelson T.;
RT "Sequences of seven cDNAs encoding the Rubisco small subunit from Flaveria
RT pringlei.";
RL (er) Plant Gene Register PGR96-057(1996).
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; U29936; AAB67848.1; -; mRNA.
DR AlphaFoldDB; Q39746; -.
DR SMR; Q39746; -.
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..178
FT /note="Ribulose bisphosphate carboxylase small subunit,
FT chloroplastic 4"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00860"
FT /id="PRO_0000031495"
SQ SEQUENCE 178 AA; 20122 MW; 0397874A023DCDFE CRC64;
MASISSTVAT VSRAAPAQAN MVAPFTGLKS NAAFPATKKA NDFSTLPSNG GRVQCMKVWP
PLGKKKYETL SYLPNLTEAQ LAKEVDYLLR NKWVPCLEFE LEHGFVYREN ARSPGYYDGR
YWTMWKLPMF GCTDSAQVMK ELQECKKEYP QAWIRIIGFD NVRQVQCISF IASKPDGF
