ID   RBS_PSEUX               Reviewed;         141 AA.
AC   F4CQ78;
DT   10-FEB-2021, integrated into UniProtKB/Swiss-Prot.
DT   28-JUN-2011, sequence version 1.
DT   25-MAY-2022, entry version 43.
DE   RecName: Full=Ribulose bisphosphate carboxylase small subunit {ECO:0000255|HAMAP-Rule:MF_00859, ECO:0000305|PubMed:23663433};
DE            Short=RuBisCO small subunit {ECO:0000255|HAMAP-Rule:MF_00859, ECO:0000305|PubMed:23663433};
GN   Name=cbbS {ECO:0000255|HAMAP-Rule:MF_00859};
GN   Synonyms=ccbS {ECO:0000303|PubMed:23663433}; OrderedLocusNames=Psed_6250;
OS   Pseudonocardia dioxanivorans (strain ATCC 55486 / DSM 44775 / JCM 13855 /
OS   CB1190).
OC   Bacteria; Actinobacteria; Pseudonocardiales; Pseudonocardiaceae;
OC   Pseudonocardia.
OX   NCBI_TaxID=675635;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 55486 / DSM 44775 / JCM 13855 / CB1190;
RX   PubMed=21725009; DOI=10.1128/jb.00415-11;
RA   Sales C.M., Mahendra S., Grostern A., Parales R.E., Goodwin L.A., Woyke T.,
RA   Nolan M., Lapidus A., Chertkov O., Ovchinnikova G., Sczyrba A.,
RA   Alvarez-Cohen L.;
RT   "Genome sequence of the 1,4-dioxane-degrading Pseudonocardia dioxanivorans
RT   strain CB1190.";
RL   J. Bacteriol. 193:4549-4550(2011).
RN   [2]
RP   FUNCTION, AND INDUCTION.
RC   STRAIN=ATCC 55486 / DSM 44775 / JCM 13855 / CB1190;
RX   PubMed=23663433; DOI=10.1111/1462-2920.12144;
RA   Grostern A., Alvarez-Cohen L.;
RT   "RubisCO-based CO2 fixation and C1 metabolism in the actinobacterium
RT   Pseudonocardia dioxanivorans CB1190.";
RL   Environ. Microbiol. 15:3040-3053(2013).
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_00859,
CC       ECO:0000305|PubMed:23663433}.
CC   -!- SUBUNIT: Heterohexadecamer of 8 large and 8 small subunits.
CC       {ECO:0000255|HAMAP-Rule:MF_00859}.
CC   -!- INDUCTION: Transcription is 18-fold up-regulated by growth on
CC       H(2)/bicarbonate compared to pyruvate, RuBisCO activity is induced by
CC       growth on H(2), H(2)/bicarbonate, formate, methanol and CO.
CC       {ECO:0000269|PubMed:23663433}.
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_00859}.
CC   -!- SIMILARITY: Belongs to the RuBisCO small chain family.
CC       {ECO:0000255|HAMAP-Rule:MF_00859}.
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; CP002593; AEA28351.1; -; Genomic_DNA.
DR   RefSeq; WP_013678238.1; NC_015312.1.
DR   AlphaFoldDB; F4CQ78; -.
DR   SMR; F4CQ78; -.
DR   STRING; 675635.Psed_6250; -.
DR   EnsemblBacteria; AEA28351; AEA28351; Psed_6250.
DR   KEGG; pdx:Psed_6250; -.
DR   eggNOG; COG4451; Bacteria.
DR   HOGENOM; CLU_098114_2_0_11; -.
DR   OMA; KQCQVLS; -.
DR   OrthoDB; 1708389at2; -.
DR   Proteomes; UP000007809; Chromosome.
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; IPR036385; RuBisCO_ssu_sf.
DR   PANTHER; PTHR31262; PTHR31262; 1.
DR   Pfam; PF00101; RuBisCO_small; 1.
DR   SMART; SM00961; RuBisCO_small; 1.
DR   SUPFAM; SSF55239; SSF55239; 1.
PE   2: Evidence at transcript level;
KW   Calvin cycle; Carbon dioxide fixation; Reference proteome.
FT   CHAIN           1..141
FT                   /note="Ribulose bisphosphate carboxylase small subunit"
FT                   /id="PRO_0000452050"
SQ   SEQUENCE   141 AA;  16029 MW;  D9141463150536F8 CRC64;
     MRITQGTFSY LPDFTDEEIT AQINYALTND WPLSVEFTDD PHPRNTYWEM WGLPMFDLRD
     PAGVLMEVNA CRAANPNAYV RLNAYDASLG RQTTALSFIV QRPAEEPGFR LDRAEGRGRA
     IGYTTHSYAT ERPVGDRYTQ G