ID   MEND_GLOC7              Reviewed;         581 AA.
AC   B7K8M6;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   10-FEB-2009, sequence version 1.
DT   03-AUG-2022, entry version 70.
DE   RecName: Full=2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-carboxylate synthase {ECO:0000255|HAMAP-Rule:MF_01659};
DE            Short=SEPHCHC synthase {ECO:0000255|HAMAP-Rule:MF_01659};
DE            EC=2.2.1.9 {ECO:0000255|HAMAP-Rule:MF_01659};
GN   Name=menD {ECO:0000255|HAMAP-Rule:MF_01659};
GN   OrderedLocusNames=PCC7424_2817;
OS   Gloeothece citriformis (strain PCC 7424) (Cyanothece sp. (strain PCC
OS   7424)).
OC   Bacteria; Cyanobacteria; Oscillatoriophycideae; Chroococcales;
OC   Aphanothecaceae; Gloeothece; Gloeothece citriformis.
OX   NCBI_TaxID=65393;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 7424;
RX   PubMed=21972240; DOI=10.1128/mbio.00214-11;
RA   Bandyopadhyay A., Elvitigala T., Welsh E., Stockel J., Liberton M., Min H.,
RA   Sherman L.A., Pakrasi H.B.;
RT   "Novel metabolic attributes of the genus Cyanothece, comprising a group of
RT   unicellular nitrogen-fixing Cyanobacteria.";
RL   MBio 2:E214-E214(2011).
CC   -!- FUNCTION: Catalyzes the thiamine diphosphate-dependent decarboxylation
CC       of 2-oxoglutarate and the subsequent addition of the resulting succinic
CC       semialdehyde-thiamine pyrophosphate anion to isochorismate to yield 2-
CC       succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-carboxylate (SEPHCHC).
CC       {ECO:0000255|HAMAP-Rule:MF_01659}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2-oxoglutarate + H(+) + isochorismate = 5-enolpyruvoyl-6-
CC         hydroxy-2-succinyl-cyclohex-3-ene-1-carboxylate + CO2;
CC         Xref=Rhea:RHEA:25593, ChEBI:CHEBI:15378, ChEBI:CHEBI:16526,
CC         ChEBI:CHEBI:16810, ChEBI:CHEBI:29780, ChEBI:CHEBI:58818; EC=2.2.1.9;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01659};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01659};
CC       Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01659};
CC   -!- COFACTOR:
CC       Name=thiamine diphosphate; Xref=ChEBI:CHEBI:58937;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01659};
CC       Note=Binds 1 thiamine pyrophosphate per subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_01659};
CC   -!- PATHWAY: Quinol/quinone metabolism; 1,4-dihydroxy-2-naphthoate
CC       biosynthesis; 1,4-dihydroxy-2-naphthoate from chorismate: step 2/7.
CC       {ECO:0000255|HAMAP-Rule:MF_01659}.
CC   -!- PATHWAY: Cofactor biosynthesis; phylloquinone biosynthesis.
CC       {ECO:0000255|HAMAP-Rule:MF_01659}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01659}.
CC   -!- SIMILARITY: Belongs to the TPP enzyme family. MenD subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01659}.
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; CP001291; ACK71224.1; -; Genomic_DNA.
DR   RefSeq; WP_015954824.1; NC_011729.1.
DR   AlphaFoldDB; B7K8M6; -.
DR   SMR; B7K8M6; -.
DR   STRING; 65393.PCC7424_2817; -.
DR   EnsemblBacteria; ACK71224; ACK71224; PCC7424_2817.
DR   KEGG; cyc:PCC7424_2817; -.
DR   eggNOG; COG1165; Bacteria.
DR   HOGENOM; CLU_006051_3_0_3; -.
DR   OMA; FCNRGTS; -.
DR   OrthoDB; 897995at2; -.
DR   UniPathway; UPA00995; -.
DR   UniPathway; UPA01057; UER00164.
DR   Proteomes; UP000002384; Chromosome.
DR   GO; GO:0070204; F:2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-carboxylic-acid synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0030145; F:manganese ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0030976; F:thiamine pyrophosphate binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0009234; P:menaquinone biosynthetic process; IEA:InterPro.
DR   GO; GO:0042372; P:phylloquinone biosynthetic process; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_01659; MenD; 1.
DR   InterPro; IPR004433; MenaQ_synth_MenD.
DR   InterPro; IPR032264; MenD_middle.
DR   InterPro; IPR029061; THDP-binding.
DR   InterPro; IPR012001; Thiamin_PyroP_enz_TPP-bd_dom.
DR   InterPro; IPR011766; TPP_enzyme-bd_C.
DR   PANTHER; PTHR42916; PTHR42916; 1.
DR   Pfam; PF02775; TPP_enzyme_C; 1.
DR   Pfam; PF16582; TPP_enzyme_M_2; 1.
DR   Pfam; PF02776; TPP_enzyme_N; 1.
DR   PIRSF; PIRSF004983; MenD; 1.
DR   SUPFAM; SSF52518; SSF52518; 2.
DR   TIGRFAMs; TIGR00173; menD; 1.
PE   3: Inferred from homology;
KW   Magnesium; Manganese; Metal-binding; Reference proteome;
KW   Thiamine pyrophosphate; Transferase.
FT   CHAIN           1..581
FT                   /note="2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-
FT                   carboxylate synthase"
FT                   /id="PRO_1000187064"
SQ   SEQUENCE   581 AA;  65689 MW;  FB21BA7BA2B9135B CRC64;
     MTIDFRNVNT LWASILVETL HRLGLTTAVI CPGSRSTPLT IAFANHSNIE AIPILDERSA
     SFFALGIAKK SGLPVVLVCT SGTAGANFYP AVIEAKESHV PLLILTADRP PELRHCHAGQ
     TIDQVKLYGN YPNWQTEIAV PSAEEGMINY LRQTLIYAWE RSLFPARGVV HLNLPFREPL
     APIPNSDTEK IQFNFDVENF FTEINLLNFP SSNRIEKYEK IIPKWQLFQR GIIIAGVDHS
     YNPQEYCRAI ARLSEFLKYP VLGEALSPVR NYAALNPYLI STYDLILRNS SLAENLKPDI
     VIQIGELPTS KELRTWLDIT QPPRWIIDNK GENLDALHGK TIHLRTSIEQ LANSLSFKET
     ISNSPYLKLW CDTEKKVRKT IDQTLESIDS LLEGKIAWLL SQTLPENTPI FIANSMSVRN
     AEFFWQPNNF KYIPYFNRGA NGIDGTLSTA LGIAHHHQSS VMLTGDLALL HDNNGFLINK
     KFRGHLTIIL VNNDGGGIFE MLPIAQFDPY FEDFFATPQT VNFGKLCLAY GIDHYLIQDW
     QQLKQLLNPL PETGIRVLEL NTNRKLDAEW LKTNLSKFSL T