ID   AROC_ACAM1              Reviewed;         364 AA.
AC   B0C2W2;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   26-FEB-2008, sequence version 1.
DT   02-SEP-2026, entry version 83.
DE   RecName: Full=Chorismate synthase {ECO:0000255|HAMAP-Rule:MF_00300};
DE            Short=CS {ECO:0000255|HAMAP-Rule:MF_00300};
DE            EC=4.2.3.5 {ECO:0000255|HAMAP-Rule:MF_00300};
DE   AltName: Full=5-enolpyruvylshikimate-3-phosphate phospholyase {ECO:0000255|HAMAP-Rule:MF_00300};
GN   Name=aroC {ECO:0000255|HAMAP-Rule:MF_00300};
GN   OrderedLocusNames=AM1_1139;
OS   Acaryochloris marina (strain MBIC 11017).
OC   Bacteria; Bacillati; Cyanobacteriota; Cyanophyceae; Acaryochloridales;
OC   Acaryochloridaceae; Acaryochloris.
OX   NCBI_TaxID=329726;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MBIC 11017;
RX   PubMed=18252824; DOI=10.1073/pnas.0709772105;
RA   Swingley W.D., Chen M., Cheung P.C., Conrad A.L., Dejesa L.C., Hao J.,
RA   Honchak B.M., Karbach L.E., Kurdoglu A., Lahiri S., Mastrian S.D.,
RA   Miyashita H., Page L., Ramakrishna P., Satoh S., Sattley W.M., Shimada Y.,
RA   Taylor H.L., Tomo T., Tsuchiya T., Wang Z.T., Raymond J., Mimuro M.,
RA   Blankenship R.E., Touchman J.W.;
RT   "Niche adaptation and genome expansion in the chlorophyll d-producing
RT   cyanobacterium Acaryochloris marina.";
RL   Proc. Natl. Acad. Sci. U.S.A. 105:2005-2010(2008).
CC   -!- FUNCTION: Catalyzes the anti-1,4-elimination of the C-3 phosphate and
CC       the C-6 proR hydrogen from 5-enolpyruvylshikimate-3-phosphate (EPSP) to
CC       yield chorismate, which is the branch point compound that serves as the
CC       starting substrate for the three terminal pathways of aromatic amino
CC       acid biosynthesis. This reaction introduces a second double bond into
CC       the aromatic ring system. {ECO:0000255|HAMAP-Rule:MF_00300}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=5-O-(1-carboxyvinyl)-3-phosphoshikimate = chorismate +
CC         phosphate; Xref=Rhea:RHEA:21020, ChEBI:CHEBI:29748,
CC         ChEBI:CHEBI:43474, ChEBI:CHEBI:57701; EC=4.2.3.5;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00300};
CC   -!- COFACTOR:
CC       Name=FMNH2; Xref=ChEBI:CHEBI:57618; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00300};
CC       Note=Reduced FMN (FMNH(2)). {ECO:0000255|HAMAP-Rule:MF_00300};
CC   -!- PATHWAY: Metabolic intermediate biosynthesis; chorismate biosynthesis;
CC       chorismate from D-erythrose 4-phosphate and phosphoenolpyruvate: step
CC       7/7. {ECO:0000255|HAMAP-Rule:MF_00300}.
CC   -!- SUBUNIT: Homotetramer. {ECO:0000255|HAMAP-Rule:MF_00300}.
CC   -!- SIMILARITY: Belongs to the chorismate synthase family.
CC       {ECO:0000255|HAMAP-Rule:MF_00300}.
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DR   EMBL; CP000828; ABW26178.1; -; Genomic_DNA.
DR   RefSeq; WP_012161728.1; NC_009925.1.
DR   AlphaFoldDB; B0C2W2; -.
DR   SMR; B0C2W2; -.
DR   STRING; 329726.AM1_1139; -.
DR   KEGG; amr:AM1_1139; -.
DR   eggNOG; COG0082; Bacteria.
DR   HOGENOM; CLU_034547_0_1_3; -.
DR   OrthoDB; 9771806at2; -.
DR   UniPathway; UPA00053; UER00090.
DR   Proteomes; UP000000268; Chromosome.
DR   GO; GO:0005829; C:cytosol; IEA:TreeGrafter.
DR   GO; GO:0004107; F:chorismate synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0010181; F:FMN binding; IEA:TreeGrafter.
DR   GO; GO:0009073; P:aromatic amino acid family biosynthetic process; IEA:InterPro.
DR   GO; GO:0009423; P:chorismate biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd07304; Chorismate_synthase; 1.
DR   FunFam; 3.60.150.10:FF:000003; Chorismate synthase; 1.
DR   Gene3D; 3.60.150.10; Chorismate synthase AroC; 1.
DR   HAMAP; MF_00300; Chorismate_synth; 1.
DR   InterPro; IPR000453; Chorismate_synth.
DR   InterPro; IPR035904; Chorismate_synth_AroC_sf.
DR   InterPro; IPR020541; Chorismate_synthase_CS.
DR   NCBIfam; TIGR00033; aroC; 1.
DR   NCBIfam; NF003793; PRK05382.1; 1.
DR   PANTHER; PTHR21085; CHORISMATE SYNTHASE; 1.
DR   PANTHER; PTHR21085:SF0; CHORISMATE SYNTHASE; 1.
DR   Pfam; PF01264; Chorismate_synt; 1.
DR   PIRSF; PIRSF001456; Chorismate_synth; 1.
DR   SUPFAM; SSF103263; Chorismate synthase, AroC; 1.
DR   PROSITE; PS00787; CHORISMATE_SYNTHASE_1; 1.
DR   PROSITE; PS00788; CHORISMATE_SYNTHASE_2; 1.
DR   PROSITE; PS00789; CHORISMATE_SYNTHASE_3; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Aromatic amino acid biosynthesis; FAD;
KW   Flavoprotein; FMN; Lyase; NADP; Reference proteome.
FT   CHAIN           1..364
FT                   /note="Chorismate synthase"
FT                   /id="PRO_1000078983"
FT   BINDING         47
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00300"
FT   BINDING         53
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00300"
FT   BINDING         124..126
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00300"
FT   BINDING         286
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00300"
FT   BINDING         301..305
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00300"
FT   BINDING         327
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00300"
SQ   SEQUENCE   364 AA;  39234 MW;  1321AF047ED38C12 CRC64;
     MGNTFGHLFR ITTFGESHGG GVGVVIDGCP PQIEIAAEDI QFELDRRRPG QSRITTPRKE
     TDTCEIVSGM FQGKTLGTPI TILVRNKDTR PQDYSEMAQV YRPSHADATY DAKYGIRNWQ
     GGGRSSARET IGRVAAGAIA KKILQQAAGV EVIGYVKRIK TVEADIDPDQ VTLAQVEANM
     VRCPNPETAE EMIDLIDQTR RDANSIGGVV ECVARQVPKG LGAPVFDKLE AELAKAVMSL
     PACKGFEIGS GFAGTQLTGL EHNDEFYTDE TGRIRTVTNR SGGIQGGISN GENIVLRAAF
     KPTATIGKPQ KTVNQAGEAT TLAAKGRHDP CVLPRAVPMV EAMVALVLCD HLLRHHAQCE
     LLTE
//