ID   D8UAH3_VOLCA            Unreviewed;       185 AA.
AC   D8UAH3;
DT   05-OCT-2010, integrated into UniProtKB/TrEMBL.
DT   05-OCT-2010, sequence version 1.
DT   27-MAR-2024, entry version 50.
DE   RecName: Full=Ribulose bisphosphate carboxylase small subunit, chloroplastic {ECO:0000256|HAMAP-Rule:MF_00860};
DE            Short=RuBisCO small subunit {ECO:0000256|HAMAP-Rule:MF_00860};
GN   Name=rbcS {ECO:0000313|EMBL:EFJ43324.1};
GN   Synonyms=RBCS {ECO:0000256|HAMAP-Rule:MF_00860};
GN   ORFNames=VOLCADRAFT_83349 {ECO:0000313|EMBL:EFJ43324.1};
OS   Volvox carteri f. nagariensis.
OC   Eukaryota; Viridiplantae; Chlorophyta; core chlorophytes; Chlorophyceae;
OC   CS clade; Chlamydomonadales; Volvocaceae; Volvox.
OX   NCBI_TaxID=3068 {ECO:0000313|Proteomes:UP000001058};
RN   [1] {ECO:0000313|EMBL:EFJ43324.1, ECO:0000313|Proteomes:UP000001058}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=f. Nagariensis / Eve {ECO:0000313|Proteomes:UP000001058};
RX   PubMed=20616280; DOI=10.1126/science.1188800;
RA   Prochnik S.E., Umen J., Nedelcu A.M., Hallmann A., Miller S.M., Nishii I.,
RA   Ferris P., Kuo A., Mitros T., Fritz-Laylin L.K., Hellsten U., Chapman J.,
RA   Simakov O., Rensing S.A., Terry A., Pangilinan J., Kapitonov V., Jurka J.,
RA   Salamov A., Shapiro H., Schmutz J., Grimwood J., Lindquist E., Lucas S.,
RA   Grigoriev I.V., Schmitt R., Kirk D., Rokhsar D.S.;
RT   "Genomic analysis of organismal complexity in the multicellular green alga
RT   Volvox carteri.";
RL   Science 329:223-226(2010).
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:0000256|HAMAP-Rule:MF_00860,
CC       ECO:0000256|RuleBase:RU003627}.
CC   -!- SUBUNIT: Heterohexadecamer of 8 large and 8 small subunits.
CC       {ECO:0000256|HAMAP-Rule:MF_00860, ECO:0000256|RuleBase:RU003627}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast {ECO:0000256|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:0000256|HAMAP-Rule:MF_00860}.
CC   -!- SIMILARITY: Belongs to the RuBisCO small chain family.
CC       {ECO:0000256|HAMAP-Rule:MF_00860, ECO:0000256|RuleBase:RU003627}.
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DR   EMBL; GL378374; EFJ43324.1; -; Genomic_DNA.
DR   RefSeq; XP_002955684.1; XM_002955638.1.
DR   AlphaFoldDB; D8UAH3; -.
DR   STRING; 3068.D8UAH3; -.
DR   GeneID; 9626483; -.
DR   KEGG; vcn:VOLCADRAFT_83349; -.
DR   eggNOG; ENOG502QTPB; Eukaryota.
DR   InParanoid; D8UAH3; -.
DR   OrthoDB; 5482775at2759; -.
DR   Proteomes; UP000001058; Unassembled WGS sequence.
DR   GO; GO:0009507; C:chloroplast; IEA:UniProtKB-SubCell.
DR   GO; GO:0016984; F:ribulose-bisphosphate carboxylase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0009853; P:photorespiration; IEA:UniProtKB-UniRule.
DR   GO; GO:0019253; P:reductive pentose-phosphate cycle; IEA:UniProtKB-UniRule.
DR   CDD; cd03527; RuBisCO_small; 1.
DR   Gene3D; 3.30.190.10; Ribulose bisphosphate carboxylase, small subunit; 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; RIBULOSE BISPHOSPHATE CARBOXYLASE SMALL CHAIN 1, CHLOROPLASTIC; 1.
DR   PANTHER; PTHR31262:SF28; RIBULOSE BISPHOSPHATE CARBOXYLASE SMALL SUBUNIT, CHLOROPLASTIC 1; 1.
DR   Pfam; PF00101; RuBisCO_small; 1.
DR   PRINTS; PR00152; RUBISCOSMALL.
DR   SMART; SM00961; RuBisCO_small; 1.
DR   SUPFAM; SSF55239; RuBisCO, small subunit; 1.
PE   3: Inferred from homology;
KW   Calvin cycle {ECO:0000256|ARBA:ARBA00022567, ECO:0000256|HAMAP-
KW   Rule:MF_00860};
KW   Carbon dioxide fixation {ECO:0000256|ARBA:ARBA00023300, ECO:0000256|HAMAP-
KW   Rule:MF_00860}; Chloroplast {ECO:0000256|HAMAP-Rule:MF_00860};
KW   Photorespiration {ECO:0000256|ARBA:ARBA00023238, ECO:0000256|HAMAP-
KW   Rule:MF_00860};
KW   Photosynthesis {ECO:0000256|ARBA:ARBA00022531, ECO:0000256|HAMAP-
KW   Rule:MF_00860};
KW   Plastid {ECO:0000256|HAMAP-Rule:MF_00860, ECO:0000256|RuleBase:RU003627};
KW   Reference proteome {ECO:0000313|Proteomes:UP000001058}.
FT   DOMAIN          56..171
FT                   /note="Ribulose bisphosphate carboxylase small subunit"
FT                   /evidence="ECO:0000259|SMART:SM00961"
SQ   SEQUENCE   185 AA;  20699 MW;  D41ED3D7707116EE CRC64;
     MAALLAKSSV AAAVARPQRS SVRPCAALKP AVKAAPVATP AQANKMMVWT PVNNKMFETF
     SYLPPLTDEQ IAAQVDYIVA NGWIPCLEFA EADKAYVSNE STVRFGPVSC LYYDNRYWTM
     WKLPMFGCRD PMQVLREIVA CTKAFPDAYV RLVAFDNVKQ VQIMGFLVQR PKSARDWQPA
     NKRSV
//