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RIBB_PSESM
ID   RIBB_PSESM              Reviewed;         369 AA.
AC   Q882G0;
DT   16-JAN-2004, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2003, sequence version 1.
DT   03-AUG-2022, entry version 112.
DE   RecName: Full=3,4-dihydroxy-2-butanone 4-phosphate synthase;
DE            Short=DHBP synthase;
DE            EC=4.1.99.12;
GN   Name=ribB; OrderedLocusNames=PSPTO_2668;
OS   Pseudomonas syringae pv. tomato (strain ATCC BAA-871 / DC3000).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC   Pseudomonadaceae; Pseudomonas.
OX   NCBI_TaxID=223283;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-871 / DC3000;
RX   PubMed=12928499; DOI=10.1073/pnas.1731982100;
RA   Buell C.R., Joardar V., Lindeberg M., Selengut J., Paulsen I.T.,
RA   Gwinn M.L., Dodson R.J., DeBoy R.T., Durkin A.S., Kolonay J.F., Madupu R.,
RA   Daugherty S.C., Brinkac L.M., Beanan M.J., Haft D.H., Nelson W.C.,
RA   Davidsen T.M., Zafar N., Zhou L., Liu J., Yuan Q., Khouri H.M.,
RA   Fedorova N.B., Tran B., Russell D., Berry K.J., Utterback T.R.,
RA   Van Aken S.E., Feldblyum T.V., D'Ascenzo M., Deng W.-L., Ramos A.R.,
RA   Alfano J.R., Cartinhour S., Chatterjee A.K., Delaney T.P., Lazarowitz S.G.,
RA   Martin G.B., Schneider D.J., Tang X., Bender C.L., White O., Fraser C.M.,
RA   Collmer A.;
RT   "The complete genome sequence of the Arabidopsis and tomato pathogen
RT   Pseudomonas syringae pv. tomato DC3000.";
RL   Proc. Natl. Acad. Sci. U.S.A. 100:10181-10186(2003).
CC   -!- FUNCTION: Catalyzes the conversion of D-ribulose 5-phosphate to formate
CC       and 3,4-dihydroxy-2-butanone 4-phosphate. {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=D-ribulose 5-phosphate = (2S)-2-hydroxy-3-oxobutyl phosphate +
CC         formate + H(+); Xref=Rhea:RHEA:18457, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:15740, ChEBI:CHEBI:58121, ChEBI:CHEBI:58830;
CC         EC=4.1.99.12;
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000250};
CC       Name=Mn(2+); Xref=ChEBI:CHEBI:29035; Evidence={ECO:0000250};
CC       Note=Binds 2 divalent metal cations per subunit. Magnesium or
CC       manganese. {ECO:0000250};
CC   -!- PATHWAY: Cofactor biosynthesis; riboflavin biosynthesis; 2-hydroxy-3-
CC       oxobutyl phosphate from D-ribulose 5-phosphate: step 1/1.
CC   -!- SIMILARITY: In the N-terminal section; belongs to the DHBP synthase
CC       family. {ECO:0000305}.
CC   -!- SIMILARITY: In the C-terminal section; belongs to the GTP
CC       cyclohydrolase II family. {ECO:0000305}.
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DR   EMBL; AE016853; AAO56170.1; -; Genomic_DNA.
DR   RefSeq; NP_792475.1; NC_004578.1.
DR   RefSeq; WP_011104135.1; NC_004578.1.
DR   AlphaFoldDB; Q882G0; -.
DR   SMR; Q882G0; -.
DR   STRING; 223283.PSPTO_2668; -.
DR   EnsemblBacteria; AAO56170; AAO56170; PSPTO_2668.
DR   GeneID; 1184320; -.
DR   KEGG; pst:PSPTO_2668; -.
DR   PATRIC; fig|223283.9.peg.2719; -.
DR   eggNOG; COG0108; Bacteria.
DR   HOGENOM; CLU_020273_1_2_6; -.
DR   OMA; GGVHMAM; -.
DR   OrthoDB; 900513at2; -.
DR   PhylomeDB; Q882G0; -.
DR   UniPathway; UPA00275; UER00399.
DR   Proteomes; UP000002515; Chromosome.
DR   GO; GO:0008686; F:3,4-dihydroxy-2-butanone-4-phosphate synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0030145; F:manganese ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0009231; P:riboflavin biosynthetic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.50.10990; -; 2.
DR   HAMAP; MF_00180; RibB; 1.
DR   InterPro; IPR017945; DHBP_synth_RibB-like_a/b_dom.
DR   InterPro; IPR000422; DHBP_synthase_RibB.
DR   InterPro; IPR032677; GTP_cyclohydro_II.
DR   InterPro; IPR036144; RibA-like_sf.
DR   Pfam; PF00926; DHBP_synthase; 1.
DR   Pfam; PF00925; GTP_cyclohydro2; 1.
DR   SUPFAM; SSF142695; SSF142695; 1.
DR   SUPFAM; SSF55821; SSF55821; 1.
DR   TIGRFAMs; TIGR00506; ribB; 1.
PE   3: Inferred from homology;
KW   Lyase; Magnesium; Manganese; Metal-binding; Reference proteome;
KW   Riboflavin biosynthesis.
FT   CHAIN           1..369
FT                   /note="3,4-dihydroxy-2-butanone 4-phosphate synthase"
FT                   /id="PRO_0000151732"
FT   REGION          1..201
FT                   /note="DHBP synthase"
FT   REGION          202..369
FT                   /note="GTP cyclohydrolase II-like"
FT   BINDING         27..28
FT                   /ligand="D-ribulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:58121"
FT                   /evidence="ECO:0000250"
FT   BINDING         28
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250"
FT   BINDING         28
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
FT   BINDING         32
FT                   /ligand="D-ribulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:58121"
FT                   /evidence="ECO:0000250"
FT   BINDING         140..144
FT                   /ligand="D-ribulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:58121"
FT                   /evidence="ECO:0000250"
FT   BINDING         143
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
FT   BINDING         164
FT                   /ligand="D-ribulose 5-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:58121"
FT                   /evidence="ECO:0000250"
FT   SITE            126
FT                   /note="Essential for catalytic activity"
FT                   /evidence="ECO:0000250"
FT   SITE            164
FT                   /note="Essential for catalytic activity"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   369 AA;  40252 MW;  CEDF44F6FEFD4983 CRC64;
     MAFDRIEDII EDYRQGKMVL LVDDEDRENE GDLLLAADCC TAQAISFMAR EARGLICLTL
     TDEHCKSLGL EQMVPSNGSV FATAFTVSIE ATTGVTTGIS AADRARTVQA AVNPGAVPDD
     LVQPGHIFPL RARDGGVLTR AGHTEAGCDL ARMAGFTPAS VIVEVMNDDG TMARRPDLEL
     FAEKHGIRIG TIADLIHYRL STEHTIVRIG ERELPTVHGT FRLFSYEDRI EGGVHMAMVM
     GDIRREDPTL VRVHVVDPLR DLVGAEYTGP ANWTLWAALQ RVAEEGCGVV VVLANHESSQ
     ALLERIPQLT QPPRQYTRSQ SRIYSEVGTG AQILQDLGIG KLRHLGPPLK YAGLTGYDLE
     VIESIPFPG
 
 
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