PANB1_PSEAB
ID PANB1_PSEAB Reviewed; 273 AA.
AC Q02K83;
DT 24-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT 14-NOV-2006, sequence version 1.
DT 03-AUG-2022, entry version 80.
DE RecName: Full=3-methyl-2-oxobutanoate hydroxymethyltransferase 1 {ECO:0000255|HAMAP-Rule:MF_00156};
DE EC=2.1.2.11 {ECO:0000255|HAMAP-Rule:MF_00156};
DE AltName: Full=Ketopantoate hydroxymethyltransferase 1 {ECO:0000255|HAMAP-Rule:MF_00156};
DE Short=KPHMT 1 {ECO:0000255|HAMAP-Rule:MF_00156};
GN Name=panB1 {ECO:0000255|HAMAP-Rule:MF_00156}; OrderedLocusNames=PA14_43830;
OS Pseudomonas aeruginosa (strain UCBPP-PA14).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC Pseudomonadaceae; Pseudomonas.
OX NCBI_TaxID=208963;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=UCBPP-PA14;
RX PubMed=17038190; DOI=10.1186/gb-2006-7-10-r90;
RA Lee D.G., Urbach J.M., Wu G., Liberati N.T., Feinbaum R.L., Miyata S.,
RA Diggins L.T., He J., Saucier M., Deziel E., Friedman L., Li L., Grills G.,
RA Montgomery K., Kucherlapati R., Rahme L.G., Ausubel F.M.;
RT "Genomic analysis reveals that Pseudomonas aeruginosa virulence is
RT combinatorial.";
RL Genome Biol. 7:R90.1-R90.14(2006).
CC -!- FUNCTION: Catalyzes the reversible reaction in which hydroxymethyl
CC group from 5,10-methylenetetrahydrofolate is transferred onto alpha-
CC ketoisovalerate to form ketopantoate. {ECO:0000255|HAMAP-
CC Rule:MF_00156}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(6R)-5,10-methylene-5,6,7,8-tetrahydrofolate + 3-methyl-2-
CC oxobutanoate + H2O = (6S)-5,6,7,8-tetrahydrofolate + 2-
CC dehydropantoate; Xref=Rhea:RHEA:11824, ChEBI:CHEBI:11561,
CC ChEBI:CHEBI:11851, ChEBI:CHEBI:15377, ChEBI:CHEBI:15636,
CC ChEBI:CHEBI:57453; EC=2.1.2.11; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_00156};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00156};
CC Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000255|HAMAP-Rule:MF_00156};
CC -!- PATHWAY: Cofactor biosynthesis; (R)-pantothenate biosynthesis; (R)-
CC pantoate from 3-methyl-2-oxobutanoate: step 1/2. {ECO:0000255|HAMAP-
CC Rule:MF_00156}.
CC -!- SUBUNIT: Homodecamer; pentamer of dimers. {ECO:0000255|HAMAP-
CC Rule:MF_00156}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00156}.
CC -!- SIMILARITY: Belongs to the PanB family. {ECO:0000255|HAMAP-
CC Rule:MF_00156}.
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DR EMBL; CP000438; ABJ10779.1; -; Genomic_DNA.
DR RefSeq; WP_003087450.1; NZ_CP034244.1.
DR AlphaFoldDB; Q02K83; -.
DR SMR; Q02K83; -.
DR EnsemblBacteria; ABJ10779; ABJ10779; PA14_43830.
DR KEGG; pau:PA14_43830; -.
DR HOGENOM; CLU_036645_1_0_6; -.
DR OMA; TEDMIGA; -.
DR BioCyc; PAER208963:G1G74-3676-MON; -.
DR UniPathway; UPA00028; UER00003.
DR Proteomes; UP000000653; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0003864; F:3-methyl-2-oxobutanoate hydroxymethyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0015940; P:pantothenate biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd06557; KPHMT-like; 1.
DR Gene3D; 3.20.20.60; -; 1.
DR HAMAP; MF_00156; PanB; 1.
DR InterPro; IPR003700; Pantoate_hydroxy_MeTrfase.
DR InterPro; IPR015813; Pyrv/PenolPyrv_Kinase-like_dom.
DR InterPro; IPR040442; Pyrv_Kinase-like_dom_sf.
DR PANTHER; PTHR20881; PTHR20881; 1.
DR Pfam; PF02548; Pantoate_transf; 1.
DR PIRSF; PIRSF000388; Pantoate_hydroxy_MeTrfase; 1.
DR SUPFAM; SSF51621; SSF51621; 1.
DR TIGRFAMs; TIGR00222; panB; 1.
PE 3: Inferred from homology;
KW Cytoplasm; Magnesium; Metal-binding; Pantothenate biosynthesis;
KW Transferase.
FT CHAIN 1..273
FT /note="3-methyl-2-oxobutanoate hydroxymethyltransferase 1"
FT /id="PRO_0000297333"
FT ACT_SITE 187
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 49..50
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 49
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 88
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 88
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 118
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 120
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
SQ SEQUENCE 273 AA; 29802 MW; B04678CE4EA5E11C CRC64;
MSSHRPQHRL SVPDIQRRKG AGSLVALTAY STPMARLLDP HADLLLVGDS LGMVLYGMPS
TLGVSLEMMV AHTLAVMRGS RRACVVADLP FASYQESPRQ AFRNAARLLA DSGAQAVKLE
GGEEMEETVD FLVRRGIPVL AHIGLMPQQV NAMGGFKAQG RDPESAERVR RDGLAMQRGG
AFAVVIEGVG EPLARRLSEE LAIPCIGIGA SPACDGQVLV SEDLLGLSGE QVPRFVERYA
RLDREIDEAA RRFAEDVRER RFPEARHCFA MRE
