PANB_XANOP
ID PANB_XANOP Reviewed; 271 AA.
AC B2SJL8;
DT 24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT 01-JUL-2008, sequence version 1.
DT 03-AUG-2022, entry version 83.
DE RecName: Full=3-methyl-2-oxobutanoate hydroxymethyltransferase {ECO:0000255|HAMAP-Rule:MF_00156};
DE EC=2.1.2.11 {ECO:0000255|HAMAP-Rule:MF_00156};
DE AltName: Full=Ketopantoate hydroxymethyltransferase {ECO:0000255|HAMAP-Rule:MF_00156};
DE Short=KPHMT {ECO:0000255|HAMAP-Rule:MF_00156};
GN Name=panB {ECO:0000255|HAMAP-Rule:MF_00156}; OrderedLocusNames=PXO_00690;
OS Xanthomonas oryzae pv. oryzae (strain PXO99A).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Xanthomonadales;
OC Xanthomonadaceae; Xanthomonas.
OX NCBI_TaxID=360094;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PXO99A;
RX PubMed=18452608; DOI=10.1186/1471-2164-9-204;
RA Salzberg S.L., Sommer D.D., Schatz M.C., Phillippy A.M., Rabinowicz P.D.,
RA Tsuge S., Furutani A., Ochiai H., Delcher A.L., Kelley D., Madupu R.,
RA Puiu D., Radune D., Shumway M., Trapnell C., Aparna G., Jha G., Pandey A.,
RA Patil P.B., Ishihara H., Meyer D.F., Szurek B., Verdier V., Koebnik R.,
RA Dow J.M., Ryan R.P., Hirata H., Tsuyumu S., Won Lee S., Seo Y.-S.,
RA Sriariyanum M., Ronald P.C., Sonti R.V., Van Sluys M.-A., Leach J.E.,
RA White F.F., Bogdanove A.J.;
RT "Genome sequence and rapid evolution of the rice pathogen Xanthomonas
RT oryzae pv. oryzae PXO99A.";
RL BMC Genomics 9:204-204(2008).
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; CP000967; ACD58802.1; -; Genomic_DNA.
DR RefSeq; WP_011259032.1; NC_010717.2.
DR AlphaFoldDB; B2SJL8; -.
DR SMR; B2SJL8; -.
DR STRING; 360094.PXO_00690; -.
DR EnsemblBacteria; ACD58802; ACD58802; PXO_00690.
DR KEGG; xop:PXO_00690; -.
DR eggNOG; COG0413; Bacteria.
DR HOGENOM; CLU_036645_1_0_6; -.
DR OMA; VLVWTDM; -.
DR OrthoDB; 916845at2; -.
DR UniPathway; UPA00028; UER00003.
DR Proteomes; UP000001740; 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..271
FT /note="3-methyl-2-oxobutanoate hydroxymethyltransferase"
FT /id="PRO_1000097019"
FT ACT_SITE 186
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 51..52
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 51
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 90
FT /ligand="3-methyl-2-oxobutanoate"
FT /ligand_id="ChEBI:CHEBI:11851"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT BINDING 90
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 271 AA; 28461 MW; 97A338F84554FEBA CRC64;
MSSHADSNPW TVPALAQAKR AGRKLVMLTA YDASFARTFD VNGVDLILVG DSLGMVMQGH
DSTLAVTTAD MVYHTAAVAR ALDRALLVAD LSFQADATPE RALDAATQLL QAGAEMVKIE
GAGHKLEVIR YLVEREIPVC SHLGLTPQSV LRFGGYKVQG RGEAGEQLRR DAQAVVDAGA
SLVVLECVPT PIATQISAEL SVPTIGIGAG PGCDGQVLVM HDMLGLDSGH RRPKFVKDFL
AEGGSVAGAV RAYAQAVRDG SFPDAEHAYA A
