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PANB_LISMF
ID   PANB_LISMF              Reviewed;         277 AA.
AC   Q71YB3;
DT   15-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   03-AUG-2022, entry version 90.
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};
GN   OrderedLocusNames=LMOf2365_1931;
OS   Listeria monocytogenes serotype 4b (strain F2365).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Listeriaceae; Listeria.
OX   NCBI_TaxID=265669;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=F2365;
RX   PubMed=15115801; DOI=10.1093/nar/gkh562;
RA   Nelson K.E., Fouts D.E., Mongodin E.F., Ravel J., DeBoy R.T., Kolonay J.F.,
RA   Rasko D.A., Angiuoli S.V., Gill S.R., Paulsen I.T., Peterson J.D.,
RA   White O., Nelson W.C., Nierman W.C., Beanan M.J., Brinkac L.M.,
RA   Daugherty S.C., Dodson R.J., Durkin A.S., Madupu R., Haft D.H.,
RA   Selengut J., Van Aken S.E., Khouri H.M., Fedorova N., Forberger H.A.,
RA   Tran B., Kathariou S., Wonderling L.D., Uhlich G.A., Bayles D.O.,
RA   Luchansky J.B., Fraser C.M.;
RT   "Whole genome comparisons of serotype 4b and 1/2a strains of the food-borne
RT   pathogen Listeria monocytogenes reveal new insights into the core genome
RT   components of this species.";
RL   Nucleic Acids Res. 32:2386-2395(2004).
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; AE017262; AAT04701.1; -; Genomic_DNA.
DR   RefSeq; WP_003726618.1; NC_002973.6.
DR   AlphaFoldDB; Q71YB3; -.
DR   SMR; Q71YB3; -.
DR   KEGG; lmf:LMOf2365_1931; -.
DR   HOGENOM; CLU_036645_1_0_9; -.
DR   OMA; VLVWTDM; -.
DR   UniPathway; UPA00028; UER00003.
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..277
FT                   /note="3-methyl-2-oxobutanoate hydroxymethyltransferase"
FT                   /id="PRO_0000184858"
FT   ACT_SITE        181
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT   BINDING         43..44
FT                   /ligand="3-methyl-2-oxobutanoate"
FT                   /ligand_id="ChEBI:CHEBI:11851"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT   BINDING         43
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT   BINDING         82
FT                   /ligand="3-methyl-2-oxobutanoate"
FT                   /ligand_id="ChEBI:CHEBI:11851"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT   BINDING         82
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT   BINDING         112
FT                   /ligand="3-methyl-2-oxobutanoate"
FT                   /ligand_id="ChEBI:CHEBI:11851"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
FT   BINDING         114
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00156"
SQ   SEQUENCE   277 AA;  29839 MW;  DDBAE81C7FE16EBF CRC64;
     MKRPVDFFAM KENGEKITMI TAYDYPSAKN VEQAEADMIL VGDSLGMVVL GYDSTVPVTM
     DDMIHHTKAV KRGAPDTFVV TDMPFMTYHG SVDETIQNAR KIIQESGAHA VKLEGAGEVV
     NKIARLTEAG APVVAHLGLT PQSVGLTGSY KVRAKSAQEA QELMDNALAV EAAGAIALVL
     EAIPRQLAEK VSKALSIPTI GIGAGVETDG QVLVYHDIIG YGISRRAKFV KAYADIDERI
     EPALASYVKE VKAATFPEVK HSFTMAEEDL KGLYGRE
 
 
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