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RBS2_ACEPE
ID   RBS2_ACEPE              Reviewed;          86 AA.
AC   P16130;
DT   01-APR-1990, integrated into UniProtKB/Swiss-Prot.
DT   01-APR-1990, sequence version 1.
DT   25-MAY-2022, entry version 90.
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: Fragment;
GN   Name=RBCS2 {ECO:0000255|HAMAP-Rule:MF_00860}; Synonyms=RBCS-2;
OS   Acetabularia peniculus (Green alga) (Polyphysa peniculus).
OC   Eukaryota; Viridiplantae; Chlorophyta; Ulvophyceae; TCBD clade;
OC   Dasycladales; Polyphysaceae; Acetabularia.
OX   NCBI_TaxID=35862;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   STRAIN=17;
RX   PubMed=2573818; DOI=10.1007/bf00332408;
RA   Schneider S.U., Leible M.B., Yang X.P.;
RT   "Strong homology between the small subunit of ribulose-1,5-bisphosphate
RT   carboxylase/oxygenase of two species of Acetabularia and the occurrence of
RT   unusual codon usage.";
RL   Mol. Gen. Genet. 218:445-452(1989).
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; X51807; CAA36104.1; -; mRNA.
DR   PIR; S07119; S07119.
DR   AlphaFoldDB; P16130; -.
DR   SMR; P16130; -.
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   Gene3D; 3.30.190.10; -; 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   2: Evidence at transcript level;
KW   Calvin cycle; Carbon dioxide fixation; Chloroplast; Photorespiration;
KW   Photosynthesis; Plastid.
FT   CHAIN           <1..86
FT                   /note="Ribulose bisphosphate carboxylase small subunit,
FT                   chloroplastic 2"
FT                   /id="PRO_0000198586"
FT   NON_TER         1
SQ   SEQUENCE   86 AA;  9849 MW;  B2D624811E9A2BA4 CRC64;
     DNCIRMGPVS STYQDNRYWT MWKLPMFGCT DGSQVLSEIQ ACTKAFPDAY IRLVCFDANR
     QVQISGFLVH RPPSATDYRL PADRQV
 
 
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