ID K3ZA66_SETIT Unreviewed; 173 AA. AC K3ZA66; DT 28-NOV-2012, integrated into UniProtKB/TrEMBL. DT 28-NOV-2012, sequence version 1. DT 27-MAR-2024, entry version 60. 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=101768770 {ECO:0000313|EnsemblPlants:KQL16344}; GN Synonyms=RBCS {ECO:0000256|HAMAP-Rule:MF_00860}; GN ORFNames=SETIT_3G312200v2 {ECO:0000313|EMBL:RCV18578.1}; OS Setaria italica (Foxtail millet) (Panicum italicum). OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta; OC Spermatophyta; Magnoliopsida; Liliopsida; Poales; Poaceae; PACMAD clade; OC Panicoideae; Panicodae; Paniceae; Cenchrinae; Setaria. OX NCBI_TaxID=4555 {ECO:0000313|EnsemblPlants:KQL16344, ECO:0000313|Proteomes:UP000004995}; RN [1] {ECO:0000313|EMBL:RCV18578.1, ECO:0000313|Proteomes:UP000004995} RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=cv. Yugu1 {ECO:0000313|EnsemblPlants:KQL16344, RC ECO:0000313|Proteomes:UP000004995}, and Yugu1 RC {ECO:0000313|EMBL:RCV18578.1}; RX PubMed=22580951; DOI=10.1038/nbt.2196; RA Bennetzen J.L., Schmutz J., Wang H., Percifield R., Hawkins J., RA Pontaroli A.C., Estep M., Feng L., Vaughn J.N., Grimwood J., Jenkins J., RA Barry K., Lindquist E., Hellsten U., Deshpande S., Wang X., Wu X., RA Mitros T., Triplett J., Yang X., Ye C.Y., Mauro-Herrera M., Wang L., Li P., RA Sharma M., Sharma R., Ronald P.C., Panaud O., Kellogg E.A., Brutnell T.P., RA Doust A.N., Tuskan G.A., Rokhsar D., Devos K.M.; RT "Reference genome sequence of the model plant Setaria."; RL Nat. Biotechnol. 30:555-561(2012). RN [2] {ECO:0000313|EMBL:RCV18578.1} RP NUCLEOTIDE SEQUENCE. RC STRAIN=Yugu1 {ECO:0000313|EMBL:RCV18578.1}; RA Noorani M.; RL Submitted (JUL-2015) to the EMBL/GenBank/DDBJ databases. RN [3] {ECO:0000313|EnsemblPlants:KQL16344} RP IDENTIFICATION. RC STRAIN=Yugu1 {ECO:0000313|EnsemblPlants:KQL16344}; RG EnsemblPlants; RL Submitted (AUG-2018) to UniProtKB. 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}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; AGNK02001936; -; NOT_ANNOTATED_CDS; Genomic_DNA. DR EMBL; CM003530; RCV18578.1; -; Genomic_DNA. DR RefSeq; XP_004962611.1; XM_004962554.2. DR AlphaFoldDB; K3ZA66; -. DR STRING; 4555.K3ZA66; -. DR EnsemblPlants; KQL16344; KQL16344; SETIT_023437mg. DR GeneID; 101768770; -. DR Gramene; KQL16344; KQL16344; SETIT_023437mg. DR KEGG; sita:101768770; -. DR eggNOG; ENOG502QT0M; Eukaryota. DR HOGENOM; CLU_098114_1_0_1; -. DR InParanoid; K3ZA66; -. DR OMA; YREHGNS; -. DR OrthoDB; 5482775at2759; -. DR Proteomes; UP000004995; Chromosome III. 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; IPR024680; RuBisCO_ssu_N. DR InterPro; IPR036385; RuBisCO_ssu_sf. DR PANTHER; PTHR31262; RIBULOSE BISPHOSPHATE CARBOXYLASE SMALL CHAIN 1, CHLOROPLASTIC; 1. DR PANTHER; PTHR31262:SF10; RIBULOSE BISPHOSPHATE CARBOXYLASE SMALL SUBUNIT, CHLOROPLASTIC 2; 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; 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:UP000004995}; KW Transit peptide {ECO:0000256|ARBA:ARBA00022946}. FT DOMAIN 55..163 FT /note="Ribulose bisphosphate carboxylase small subunit" FT /evidence="ECO:0000259|SMART:SM00961" SQ SEQUENCE 173 AA; 19467 MW; 59423B5060CFAF0B CRC64; MAPTAMAATS VAPFQGLKST AGLPVSRRST SSGFGNVSNG GRIRCMQVWP IGGKKFETLS YLPPLSTDDL LKQIDYLIRK NWIPCLEFSK VGFVYRENNR SPGYYDGRYW TMWKLPMFGC TEATQVYAEL EECKKAYPDA YIRILGFDNV RQVQCIMFIA YKPPGCEETG VAK //