ID   RBL1B_RHOPS             Reviewed;         485 AA.
AC   Q37G91;
DT   03-OCT-2006, integrated into UniProtKB/Swiss-Prot.
DT   06-DEC-2005, sequence version 1.
DT   27-MAR-2024, entry version 105.
DE   RecName: Full=Ribulose bisphosphate carboxylase large chain 2 {ECO:0000255|HAMAP-Rule:MF_01338};
DE            Short=RuBisCO large subunit 2 {ECO:0000255|HAMAP-Rule:MF_01338};
DE            EC=4.1.1.39 {ECO:0000255|HAMAP-Rule:MF_01338};
GN   Name=cbbL2 {ECO:0000255|HAMAP-Rule:MF_01338};
GN   OrderedLocusNames=RPD_3722;
OS   Rhodopseudomonas palustris (strain BisB5).
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Hyphomicrobiales;
OC   Nitrobacteraceae; Rhodopseudomonas.
OX   NCBI_TaxID=316057;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=BisB5;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA   Chain P., Malfatti S., Shin M., Vergez L., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Pelletier D.A., Kyrpides N., Lykidis A., Oda Y., Harwood C.S.,
RA   Richardson P.;
RT   "Complete sequence of Rhodopseudomonas palustris BisB5.";
RL   Submitted (MAR-2006) to the EMBL/GenBank/DDBJ databases.
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. {ECO:0000255|HAMAP-Rule:MF_01338}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 (2R)-3-phosphoglycerate + 2 H(+) = CO2 + D-ribulose 1,5-
CC         bisphosphate + H2O; Xref=Rhea:RHEA:23124, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:16526, ChEBI:CHEBI:57870,
CC         ChEBI:CHEBI:58272; EC=4.1.1.39; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01338};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=D-ribulose 1,5-bisphosphate + O2 = (2R)-3-phosphoglycerate +
CC         2-phosphoglycolate + 2 H(+); Xref=Rhea:RHEA:36631, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:15379, ChEBI:CHEBI:57870, ChEBI:CHEBI:58033,
CC         ChEBI:CHEBI:58272; Evidence={ECO:0000255|HAMAP-Rule:MF_01338};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01338};
CC       Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000255|HAMAP-Rule:MF_01338};
CC   -!- SUBUNIT: Heterohexadecamer of 8 large chains and 8 small chains.
CC       {ECO:0000255|HAMAP-Rule:MF_01338}.
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_01338}.
CC   -!- SIMILARITY: Belongs to the RuBisCO large chain family. Type I
CC       subfamily. {ECO:0000255|HAMAP-Rule:MF_01338}.
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DR   EMBL; CP000283; ABE40943.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q37G91; -.
DR   SMR; Q37G91; -.
DR   STRING; 316057.RPD_3722; -.
DR   KEGG; rpd:RPD_3722; -.
DR   eggNOG; COG1850; Bacteria.
DR   HOGENOM; CLU_031450_2_0_5; -.
DR   BioCyc; RPAL316057:RPD_RS18715-MONOMER; -.
DR   Proteomes; UP000001818; Chromosome.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004497; F:monooxygenase activity; IEA:UniProtKB-KW.
DR   GO; GO:0016984; F:ribulose-bisphosphate carboxylase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0019253; P:reductive pentose-phosphate cycle; IEA:UniProtKB-UniRule.
DR   CDD; cd08212; RuBisCO_large_I; 1.
DR   Gene3D; 3.20.20.110; Ribulose bisphosphate carboxylase, large subunit, C-terminal domain; 1.
DR   Gene3D; 3.30.70.150; RuBisCO large subunit, N-terminal domain; 1.
DR   HAMAP; MF_01338; RuBisCO_L_type1; 1.
DR   InterPro; IPR033966; RuBisCO.
DR   InterPro; IPR020878; RuBisCo_large_chain_AS.
DR   InterPro; IPR000685; RuBisCO_lsu_C.
DR   InterPro; IPR036376; RuBisCO_lsu_C_sf.
DR   InterPro; IPR017443; RuBisCO_lsu_fd_N.
DR   InterPro; IPR036422; RuBisCO_lsu_N_sf.
DR   InterPro; IPR020888; RuBisCO_lsuI.
DR   PANTHER; PTHR42704; RIBULOSE BISPHOSPHATE CARBOXYLASE; 1.
DR   PANTHER; PTHR42704:SF9; RIBULOSE BISPHOSPHATE CARBOXYLASE LARGE CHAIN; 1.
DR   Pfam; PF00016; RuBisCO_large; 1.
DR   Pfam; PF02788; RuBisCO_large_N; 1.
DR   SFLD; SFLDG01052; RuBisCO; 1.
DR   SFLD; SFLDS00014; RuBisCO; 1.
DR   SFLD; SFLDG00301; RuBisCO-like_proteins; 1.
DR   SUPFAM; SSF51649; RuBisCo, C-terminal domain; 1.
DR   SUPFAM; SSF54966; RuBisCO, large subunit, small (N-terminal) domain; 1.
DR   PROSITE; PS00157; RUBISCO_LARGE; 1.
PE   3: Inferred from homology;
KW   Calvin cycle; Carbon dioxide fixation; Lyase; Magnesium; Metal-binding;
KW   Monooxygenase; Oxidoreductase; Photosynthesis.
FT   CHAIN           1..485
FT                   /note="Ribulose bisphosphate carboxylase large chain 2"
FT                   /id="PRO_0000251459"
FT   ACT_SITE        176
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01338"
FT   ACT_SITE        294
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01338"
FT   BINDING         124
FT                   /ligand="substrate"
FT                   /note="in homodimeric partner"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01338"
FT   BINDING         174
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01338"
FT   BINDING         178
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01338"
FT   BINDING         202
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /note="via carbamate group"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01338"
FT   BINDING         204
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01338"
FT   BINDING         205
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01338"
FT   BINDING         295
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01338"
FT   BINDING         327
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01338"
FT   BINDING         379
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01338"
FT   SITE            334
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01338"
FT   MOD_RES         202
FT                   /note="N6-carboxylysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01338"
SQ   SEQUENCE   485 AA;  53733 MW;  6667A5C476EA33F6 CRC64;
     MNDSITVRGK DRYKSGVMEY KKMGYWEPDY VPKDTDVIAL FRVTPQDGVD PIEASAAVAG
     ESSTATWTVV WTDRLTAAEK YRAKCYRVDP VPNSPGQYFA YIAYDLDLFE NGSIANLSAS
     IIGNVFGFKP LKALRLEDMR LPIAYVKTFQ GPATGIVVER ERMDKFGRPL LGATVKPKLG
     LSGRNYGRVV YEALKGGLDF TKDDENINSQ PFMHWRERFL YCMEAVNKAQ AASGEIKGTY
     LNVTAGTMEE MYERAEFAKQ LGSVIIMIDL VIGYTAIQSM AKWARRNDMI LHLHRAGHST
     YTRQRNHGVS FRVIAKWMRL AGVDHIHAGT VVGKLEGDPS TTKGYYDICR EDYNPANLEH
     GLFFDQPWAS LNKLMPVASG GIHAGQMHQL LDLLGEDVVL QFGGGTIGHP MGIAAGATAN
     RVALEAMILA RNEGRDYVHE GPEILAKAAQ TCTPLKAALD TWKNVSFNYE STDTPDYAPT
     PSVSM
//