ID   ACSF_SYNS3              Reviewed;         360 AA.
AC   Q0IAL0;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   03-OCT-2006, sequence version 1.
DT   25-MAY-2022, entry version 92.
DE   RecName: Full=Magnesium-protoporphyrin IX monomethyl ester [oxidative] cyclase {ECO:0000255|HAMAP-Rule:MF_01840};
DE            Short=Mg-protoporphyrin IX monomethyl ester oxidative cyclase {ECO:0000255|HAMAP-Rule:MF_01840};
DE            EC=1.14.13.81 {ECO:0000255|HAMAP-Rule:MF_01840};
GN   Name=acsF {ECO:0000255|HAMAP-Rule:MF_01840}; OrderedLocusNames=sync_1304;
OS   Synechococcus sp. (strain CC9311).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC   unclassified Synechococcus.
OX   NCBI_TaxID=64471;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CC9311;
RX   PubMed=16938853; DOI=10.1073/pnas.0602963103;
RA   Palenik B., Ren Q., Dupont C.L., Myers G.S., Heidelberg J.F., Badger J.H.,
RA   Madupu R., Nelson W.C., Brinkac L.M., Dodson R.J., Durkin A.S.,
RA   Daugherty S.C., Sullivan S.A., Khouri H., Mohamoud Y., Halpin R.,
RA   Paulsen I.T.;
RT   "Genome sequence of Synechococcus CC9311: insights into adaptation to a
RT   coastal environment.";
RL   Proc. Natl. Acad. Sci. U.S.A. 103:13555-13559(2006).
CC   -!- FUNCTION: Catalyzes the formation of the isocyclic ring in chlorophyll
CC       biosynthesis. Mediates the cyclase reaction, which results in the
CC       formation of divinylprotochlorophyllide (Pchlide) characteristic of all
CC       chlorophylls from magnesium-protoporphyrin IX 13-monomethyl ester
CC       (MgPMME). {ECO:0000255|HAMAP-Rule:MF_01840}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 H(+) + Mg-protoporphyrin IX 13-monomethyl ester + 3 NADPH +
CC         3 O2 = 3,8-divinyl protochlorophyllide a + 5 H2O + 3 NADP(+);
CC         Xref=Rhea:RHEA:33235, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:15379, ChEBI:CHEBI:57783, ChEBI:CHEBI:58349,
CC         ChEBI:CHEBI:58632, ChEBI:CHEBI:60491; EC=1.14.13.81;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01840};
CC   -!- COFACTOR:
CC       Name=Fe cation; Xref=ChEBI:CHEBI:24875;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01840};
CC   -!- PATHWAY: Porphyrin-containing compound metabolism; chlorophyll
CC       biosynthesis (light-independent). {ECO:0000255|HAMAP-Rule:MF_01840}.
CC   -!- SIMILARITY: Belongs to the AcsF family. {ECO:0000255|HAMAP-
CC       Rule:MF_01840}.
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DR   EMBL; CP000435; ABI47230.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q0IAL0; -.
DR   STRING; 64471.sync_1304; -.
DR   EnsemblBacteria; ABI47230; ABI47230; sync_1304.
DR   KEGG; syg:sync_1304; -.
DR   eggNOG; COG1633; Bacteria.
DR   HOGENOM; CLU_048037_0_0_3; -.
DR   OMA; FHPIFKW; -.
DR   UniPathway; UPA00670; -.
DR   Proteomes; UP000001961; Chromosome.
DR   GO; GO:0005506; F:iron ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0048529; F:magnesium-protoporphyrin IX monomethyl ester (oxidative) cyclase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0036068; P:light-independent chlorophyll biosynthetic process; IEA:UniProtKB-UniPathway.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-UniRule.
DR   CDD; cd01047; ACSF; 1.
DR   HAMAP; MF_01840; AcsF; 1.
DR   InterPro; IPR008434; AcsF.
DR   InterPro; IPR009078; Ferritin-like_SF.
DR   InterPro; IPR003251; Rubrerythrin.
DR   PANTHER; PTHR31053; PTHR31053; 1.
DR   Pfam; PF02915; Rubrerythrin; 1.
DR   SUPFAM; SSF47240; SSF47240; 1.
DR   TIGRFAMs; TIGR02029; AcsF; 1.
PE   3: Inferred from homology;
KW   Chlorophyll biosynthesis; Iron; Metal-binding; NADP; Oxidoreductase;
KW   Photosynthesis; Reference proteome.
FT   CHAIN           1..360
FT                   /note="Magnesium-protoporphyrin IX monomethyl ester
FT                   [oxidative] cyclase"
FT                   /id="PRO_1000070555"
FT   REGION          1..21
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   360 AA;  41655 MW;  5A83AB79A6A043B3 CRC64;
     MPPTAVTEAT AVPGSNVTTK DPAKDTILTP RFYTTDFEAM AAMDLRPNEA ELEAICEEFR
     KDYNRHHFVR NGEFDGAADQ LDPETRKVFV EFLEQSCTSE FSGFLLYKEL SRRIKTKNPL
     LAECFSHMAR DEARHAGFLN KSMSDFGLQL DLGFLTSSKS YTFFKPKFIF YATYLSEKIG
     YWRYITIFRH LEQNPDSKIF PIFNFFENWC QDENRHGDFF DALMKAQPET VRGLRARLWC
     RFFLLAVFAT MYVRDVARKE FYEALGLDAR EYDRLVIDKT NENTARVFPV VLDVKNPRFY
     NGLERLVNNN AALSAVDATQ APAPIKLLRK LPHWVANGAQ MASLFLMAPI RSDRYHPSVR