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MENH_SALG2
ID   MENH_SALG2              Reviewed;         252 AA.
AC   B5RCD3;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   04-NOV-2008, sequence version 1.
DT   25-MAY-2022, entry version 67.
DE   RecName: Full=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=SG2337;
OS   Salmonella gallinarum (strain 287/91 / NCTC 13346).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Salmonella.
OX   NCBI_TaxID=550538;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=287/91 / NCTC 13346;
RX   PubMed=18583645; DOI=10.1101/gr.077404.108;
RA   Thomson N.R., Clayton D.J., Windhorst D., Vernikos G., Davidson S.,
RA   Churcher C., Quail M.A., Stevens M., Jones M.A., Watson M., Barron A.,
RA   Layton A., Pickard D., Kingsley R.A., Bignell A., Clark L., Harris B.,
RA   Ormond D., Abdellah Z., Brooks K., Cherevach I., Chillingworth T.,
RA   Woodward J., Norberczak H., Lord A., Arrowsmith C., Jagels K., Moule S.,
RA   Mungall K., Saunders M., Whitehead S., Chabalgoity J.A., Maskell D.,
RA   Humphreys T., Roberts M., Barrow P.A., Dougan G., Parkhill J.;
RT   "Comparative genome analysis of Salmonella enteritidis PT4 and Salmonella
RT   gallinarum 287/91 provides insights into evolutionary and host adaptation
RT   pathways.";
RL   Genome Res. 18:1624-1637(2008).
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}.
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DR   EMBL; AM933173; CAR38167.1; -; Genomic_DNA.
DR   RefSeq; WP_000979132.1; NC_011274.1.
DR   AlphaFoldDB; B5RCD3; -.
DR   SMR; B5RCD3; -.
DR   ESTHER; salty-YFBB; MenH_SHCHC.
DR   EnsemblBacteria; CAR38167; CAR38167; SG2337.
DR   KEGG; seg:SG2337; -.
DR   HOGENOM; CLU_020336_38_2_6; -.
DR   OMA; LNDWYQQ; -.
DR   UniPathway; UPA00079; -.
DR   UniPathway; UPA01057; UER00900.
DR   Proteomes; UP000008321; 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; PF12697; Abhydrolase_6; 1.
DR   SUPFAM; SSF53474; SSF53474; 1.
DR   TIGRFAMs; TIGR03695; menH_SHCHC; 1.
PE   3: Inferred from homology;
KW   Lyase; Menaquinone biosynthesis.
FT   CHAIN           1..252
FT                   /note="2-succinyl-6-hydroxy-2,4-cyclohexadiene-1-
FT                   carboxylate synthase"
FT                   /id="PRO_1000187117"
SQ   SEQUENCE   252 AA;  27623 MW;  E37CC1C2D5D368D1 CRC64;
     MMLHAQHMPG QPGAPSLVFL HGFSGDCREW QPVGEQFHGC SRLYIDLPGH GGSAAIPVGG
     FADVIRLLRA TLISYNILKF WLVGYSLGGR VAMMAACQGI PGLCGLVVEG GHPGLQNEQA
     RAERRLSDGR WAERFRHEPL TEVFHDWYQQ PVFASLTAQQ RQALTALRSQ NNGETLAAML
     EATSLAVQPD LREALNALAF PFYYLCGERD SKFRALAQEV AATCHVIRNA GHNAHRENPA
     GVVDSLAQIL RL
 
 
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