ID   BCHI_CHLP8              Reviewed;         346 AA.
AC   O50312; B3QMJ1;
DT   15-JUL-1998, integrated into UniProtKB/Swiss-Prot.
DT   14-OCT-2008, sequence version 2.
DT   03-AUG-2022, entry version 119.
DE   RecName: Full=Magnesium-chelatase 38 kDa subunit;
DE            EC=6.6.1.1;
DE   AltName: Full=Mg-protoporphyrin IX chelatase;
GN   Name=bchI; OrderedLocusNames=Cpar_0725;
OS   Chlorobaculum parvum (strain DSM 263 / NCIMB 8327) (Chlorobium vibrioforme
OS   subsp. thiosulfatophilum).
OC   Bacteria; Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae; Chlorobaculum.
OX   NCBI_TaxID=517417;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Petersen B.L., Moeller M.G., Stummann B.M., Henningsen K.W.;
RT   "Clustering of genes with function in the biosynthesis of
RT   bacteriochlorophyll and heme in the green sulfur bacterium Chlorobium
RT   vibrioforme.";
RL   Hereditas 125:93-96(1996).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 263 / NCIMB 8327;
RG   US DOE Joint Genome Institute;
RA   Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA   Bruce D., Goodwin L., Pitluck S., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Kyrpides N., Mikhailova N., Zhao F., Li T., Liu Z., Overmann J.,
RA   Bryant D.A., Richardson P.;
RT   "Complete sequence of Chlorobaculum parvum NCIB 8327.";
RL   Submitted (JUN-2008) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Involved in bacteriochlorophyll biosynthesis; introduces a
CC       magnesium ion into protoporphyrin IX to yield Mg-protoporphyrin IX.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + H2O + Mg(2+) + protoporphyrin IX = ADP + 3 H(+) + Mg-
CC         protoporphyrin IX + phosphate; Xref=Rhea:RHEA:13961,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:18420,
CC         ChEBI:CHEBI:30616, ChEBI:CHEBI:43474, ChEBI:CHEBI:57306,
CC         ChEBI:CHEBI:60492, ChEBI:CHEBI:456216; EC=6.6.1.1;
CC   -!- PATHWAY: Porphyrin-containing compound metabolism; bacteriochlorophyll
CC       biosynthesis.
CC   -!- SIMILARITY: Belongs to the Mg-chelatase subunits D/I family.
CC       {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=ACF11144.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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; Z83933; CAB06299.1; -; Genomic_DNA.
DR   EMBL; CP001099; ACF11144.1; ALT_INIT; Genomic_DNA.
DR   PIR; T17192; T17192.
DR   AlphaFoldDB; O50312; -.
DR   SMR; O50312; -.
DR   STRING; 517417.Cpar_0725; -.
DR   EnsemblBacteria; ACF11144; ACF11144; Cpar_0725.
DR   KEGG; cpc:Cpar_0725; -.
DR   eggNOG; COG1239; Bacteria.
DR   HOGENOM; CLU_016684_0_2_10; -.
DR   OMA; RISAVCG; -.
DR   UniPathway; UPA00669; -.
DR   Proteomes; UP000008811; Chromosome.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR   GO; GO:0016851; F:magnesium chelatase activity; IEA:UniProtKB-EC.
DR   GO; GO:0030494; P:bacteriochlorophyll biosynthetic process; IEA:UniProtKB-UniPathway.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR   Gene3D; 3.40.50.300; -; 1.
DR   InterPro; IPR003593; AAA+_ATPase.
DR   InterPro; IPR045006; CHLI-like.
DR   InterPro; IPR041628; ChlI/MoxR_AAA_lid.
DR   InterPro; IPR011775; Mg_chelatase_ATPase-isu.
DR   InterPro; IPR000523; Mg_chelatse_chII-like_cat_dom.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   PANTHER; PTHR32039; PTHR32039; 1.
DR   Pfam; PF17863; AAA_lid_2; 1.
DR   Pfam; PF01078; Mg_chelatase; 1.
DR   SMART; SM00382; AAA; 1.
DR   SUPFAM; SSF52540; SSF52540; 1.
DR   TIGRFAMs; TIGR02030; BchI-ChlI; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Bacteriochlorophyll biosynthesis; Chlorophyll biosynthesis;
KW   Ligase; Nucleotide-binding; Photosynthesis.
FT   CHAIN           1..346
FT                   /note="Magnesium-chelatase 38 kDa subunit"
FT                   /id="PRO_0000206858"
FT   BINDING         34..41
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255"
FT   CONFLICT        130
FT                   /note="L -> F (in Ref. 1; CAB06299)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   346 AA;  37988 MW;  4F4E5EBA1525E6E3 CRC64;
     MAFPFTSIVG QEEMKLSLIL NIIDPRIGGV LVMGHRGTGK STTVRALAEV LPLIDRVKGD
     IYNRTVEQYI EMESGVKGAP VLKASDVKTE KIPVPVVDLP LGATEDRVCG TIDIEKALTS
     GVKAFEPGLL AQANRGFLYI DEVNLLDDHL VDVLLDVAAS GKNVVEREGI SIRHPARFVL
     VGSGNPEEGE LRPQLLDRFG LHARIITIND VAKRVEIVKL RREYDENPEA FLKKVVRQQQ
     KLQKEIVAAQ KLLPKVSMDD SVLTDIARLC MALGIDGHRG ELTITRTAHA FAALQGDTNV
     TMEHVRKIAG LCLRHRLRKD PLETVDAGEK IDRELAKVLG EAEVAA