ID   MENH_SHISS              Reviewed;         252 AA.
AC   Q3YZU3;
DT   01-JUL-2008, integrated into UniProtKB/Swiss-Prot.
DT   27-SEP-2005, sequence version 1.
DT   25-MAY-2022, entry version 87.
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=SSON_2324;
OS   Shigella sonnei (strain Ss046).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Shigella.
OX   NCBI_TaxID=300269;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Ss046;
RX   PubMed=16275786; DOI=10.1093/nar/gki954;
RA   Yang F., Yang J., Zhang X., Chen L., Jiang Y., Yan Y., Tang X., Wang J.,
RA   Xiong Z., Dong J., Xue Y., Zhu Y., Xu X., Sun L., Chen S., Nie H., Peng J.,
RA   Xu J., Wang Y., Yuan Z., Wen Y., Yao Z., Shen Y., Qiang B., Hou Y., Yu J.,
RA   Jin Q.;
RT   "Genome dynamics and diversity of Shigella species, the etiologic agents of
RT   bacillary dysentery.";
RL   Nucleic Acids Res. 33:6445-6458(2005).
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; CP000038; AAZ88969.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q3YZU3; -.
DR   SMR; Q3YZU3; -.
DR   ESTHER; shifl-YFBB; MenH_SHCHC.
DR   EnsemblBacteria; AAZ88969; AAZ88969; SSON_2324.
DR   KEGG; ssn:SSON_2324; -.
DR   HOGENOM; CLU_020336_38_2_6; -.
DR   OMA; LNDWYQQ; -.
DR   UniPathway; UPA00079; -.
DR   UniPathway; UPA01057; UER00900.
DR   Proteomes; UP000002529; 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_0000341928"
SQ   SEQUENCE   252 AA;  27774 MW;  0201D6B0F1143794 CRC64;
     MILHAQAKHG KPGLPWLVFL HGFSGDCHEW QEVGEAFADY SRLYVYLPGH GGSAAISVDG
     FDDVTDLLRK TLVSYNILNF WLVGYSLGGR VAMMAACQGM PGLCGVVVEG GHPGLQNAEQ
     RAERQRSDRQ WAQRFRTEPL TAVFADWYQQ PVFASLNDDQ RRELVALRSN NNGATLAAML
     EATSLAVQPD LRANLSARTF AFYYLCGERD SKFRALAAEL AADCHVIPRA GHNAHRENPA
     GVIASLAQIL RF