ID   MENH_HAEIN              Reviewed;         247 AA.
AC   P44611;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1995, sequence version 1.
DT   03-AUG-2022, entry version 108.
DE   RecName: Full=Putative 2-succinyl-6-hydroxy-2,4-cyclohexadiene-1-carboxylate synthase {ECO:0000255|HAMAP-Rule:MF_01660};
DE            Short=SHCHC synthase {ECO:0000255|HAMAP-Rule:MF_01660};
DE            EC=4.2.99.20 {ECO:0000255|HAMAP-Rule:MF_01660};
GN   Name=menH {ECO:0000255|HAMAP-Rule:MF_01660}; OrderedLocusNames=HI_0282;
OS   Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC   Pasteurellaceae; Haemophilus.
OX   NCBI_TaxID=71421;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 51907 / DSM 11121 / KW20 / Rd;
RX   PubMed=7542800; DOI=10.1126/science.7542800;
RA   Fleischmann R.D., Adams M.D., White O., Clayton R.A., Kirkness E.F.,
RA   Kerlavage A.R., Bult C.J., Tomb J.-F., Dougherty B.A., Merrick J.M.,
RA   McKenney K., Sutton G.G., FitzHugh W., Fields C.A., Gocayne J.D.,
RA   Scott J.D., Shirley R., Liu L.-I., Glodek A., Kelley J.M., Weidman J.F.,
RA   Phillips C.A., Spriggs T., Hedblom E., Cotton M.D., Utterback T.R.,
RA   Hanna M.C., Nguyen D.T., Saudek D.M., Brandon R.C., Fine L.D.,
RA   Fritchman J.L., Fuhrmann J.L., Geoghagen N.S.M., Gnehm C.L., McDonald L.A.,
RA   Small K.V., Fraser C.M., Smith H.O., Venter J.C.;
RT   "Whole-genome random sequencing and assembly of Haemophilus influenzae
RT   Rd.";
RL   Science 269:496-512(1995).
CC   -!- FUNCTION: Catalyzes a proton abstraction reaction that results in 2,5-
CC       elimination of pyruvate from 2-succinyl-5-enolpyruvyl-6-hydroxy-3-
CC       cyclohexene-1-carboxylate (SEPHCHC) and the formation of 2-succinyl-6-
CC       hydroxy-2,4-cyclohexadiene-1-carboxylate (SHCHC). {ECO:0000255|HAMAP-
CC       Rule:MF_01660}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=5-enolpyruvoyl-6-hydroxy-2-succinyl-cyclohex-3-ene-1-
CC         carboxylate = (1R,6R)-6-hydroxy-2-succinyl-cyclohexa-2,4-diene-1-
CC         carboxylate + pyruvate; Xref=Rhea:RHEA:25597, ChEBI:CHEBI:15361,
CC         ChEBI:CHEBI:58689, ChEBI:CHEBI:58818; EC=4.2.99.20;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01660};
CC   -!- PATHWAY: Quinol/quinone metabolism; 1,4-dihydroxy-2-naphthoate
CC       biosynthesis; 1,4-dihydroxy-2-naphthoate from chorismate: step 3/7.
CC       {ECO:0000255|HAMAP-Rule:MF_01660}.
CC   -!- PATHWAY: Quinol/quinone metabolism; menaquinone biosynthesis.
CC       {ECO:0000255|HAMAP-Rule:MF_01660}.
CC   -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_01660}.
CC   -!- SIMILARITY: Belongs to the AB hydrolase superfamily. MenH family.
CC       {ECO:0000255|HAMAP-Rule:MF_01660}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; L42023; AAC21945.1; -; Genomic_DNA.
DR   PIR; B64147; B64147.
DR   RefSeq; NP_438450.1; NC_000907.1.
DR   RefSeq; WP_005694025.1; NC_000907.1.
DR   AlphaFoldDB; P44611; -.
DR   SMR; P44611; -.
DR   STRING; 71421.HI_0282; -.
DR   ESTHER; haein-yfbb; MenH_SHCHC.
DR   EnsemblBacteria; AAC21945; AAC21945; HI_0282.
DR   KEGG; hin:HI_0282; -.
DR   PATRIC; fig|71421.8.peg.298; -.
DR   eggNOG; COG2267; Bacteria.
DR   HOGENOM; CLU_020336_38_2_6; -.
DR   OMA; LNDWYQQ; -.
DR   PhylomeDB; P44611; -.
DR   BioCyc; HINF71421:G1GJ1-301-MON; -.
DR   UniPathway; UPA00079; -.
DR   UniPathway; UPA01057; UER00900.
DR   Proteomes; UP000000579; Chromosome.
DR   GO; GO:0070205; F:2-succinyl-6-hydroxy-2,4-cyclohexadiene-1-carboxylate synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0009234; P:menaquinone biosynthetic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.50.1820; -; 1.
DR   HAMAP; MF_01660; MenH; 1.
DR   InterPro; IPR029058; AB_hydrolase.
DR   InterPro; IPR000073; AB_hydrolase_1.
DR   InterPro; IPR022485; SHCHC_synthase_MenH.
DR   Pfam; PF00561; Abhydrolase_1; 1.
DR   SUPFAM; SSF53474; SSF53474; 1.
DR   TIGRFAMs; TIGR03695; menH_SHCHC; 1.
PE   3: Inferred from homology;
KW   Lyase; Menaquinone biosynthesis; Reference proteome.
FT   CHAIN           1..247
FT                   /note="Putative 2-succinyl-6-hydroxy-2,4-cyclohexadiene-1-
FT                   carboxylate synthase"
FT                   /id="PRO_0000169175"
FT   DOMAIN          4..229
FT                   /note="AB hydrolase-1"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   247 AA;  28342 MW;  59193CF43B0949CD CRC64;
     MINIIFLHGL LGTKNDWQKV IENLPHFNCI ALDLPFHGQA KDLEVTNFED SAEYLAQQIK
     SAVKNGPYFL VGYSLGGRIA LYYALQAQLE RSNLQGVILE GANLGLKTDE EKQARFQQDF
     AWAQRFMQES PEKVLNDWYQ QPVFSHLTTE ERLQLVEKRK SNCGKNIGKM LLATSLSKQP
     DFSEKVRLSS LPFFYFCGER DHKFQVLAKE NQIDLVTIPC AGHNSHLENS KYFSKKIENC
     ILKIVRP