CHLI_CYACA
ID CHLI_CYACA Reviewed; 353 AA.
AC Q9TLX7;
DT 11-JAN-2001, integrated into UniProtKB/Swiss-Prot.
DT 01-MAY-2000, sequence version 1.
DT 03-AUG-2022, entry version 78.
DE RecName: Full=Magnesium-chelatase subunit ChlI;
DE EC=6.6.1.1;
DE AltName: Full=Mg-protoporphyrin IX chelatase;
GN Name=chlI;
OS Cyanidium caldarium (Red alga).
OG Plastid; Chloroplast.
OC Eukaryota; Rhodophyta; Bangiophyceae; Cyanidiales; Cyanidiaceae; Cyanidium.
OX NCBI_TaxID=2771;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=RK-1;
RX PubMed=11040290; DOI=10.1007/s002390010101;
RA Gloeckner G., Rosenthal A., Valentin K.-U.;
RT "The structure and gene repertoire of an ancient red algal plastid
RT genome.";
RL J. Mol. Evol. 51:382-390(2000).
CC -!- FUNCTION: Involved in chlorophyll biosynthesis; introduces a magnesium
CC 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; chlorophyll
CC biosynthesis.
CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast.
CC -!- SIMILARITY: Belongs to the Mg-chelatase subunits D/I family.
CC {ECO:0000305}.
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DR EMBL; AF022186; AAF12953.1; -; Genomic_DNA.
DR RefSeq; NP_045141.1; NC_001840.1.
DR AlphaFoldDB; Q9TLX7; -.
DR SMR; Q9TLX7; -.
DR GeneID; 800136; -.
DR UniPathway; UPA00668; -.
DR GO; GO:0009507; C:chloroplast; IEA:UniProtKB-SubCell.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR GO; GO:0016851; F:magnesium chelatase activity; IEA:UniProtKB-EC.
DR GO; GO:0015995; P:chlorophyll 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; Chlorophyll biosynthesis; Chloroplast; Ligase;
KW Nucleotide-binding; Photosynthesis; Plastid.
FT CHAIN 1..353
FT /note="Magnesium-chelatase subunit ChlI"
FT /id="PRO_0000206865"
FT BINDING 49..56
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255"
SQ SEQUENCE 353 AA; 39532 MW; 8CE4213C8CC84C35 CRC64;
MTSTADVFDK KDQFNFVFPF TAIVGQEEMK ISLLLNVVDP KIGGVMIMGD RGTGKTTTIR
ALVDILPDIL VVKDDPYNSH PHDVDLMSSE VQALVLNRMN IETCYTKVPL VDLPLGATED
RVCGSIDIEK ALSEGKKSFE PGLLAKANRG LLYVDEINLL DDHLVDVLLD CSASGWNLVE
REGISVKHPS KFVLIGSGNP EEGELRPQLL DRFGLHAEIK TVKDPELRVK IVEERTEFDK
DPVAYIRKFS KSQDELREKI INAQNLLPKV EMPRELKFNI SKICGILDID GLRGDIVTNR
ASKAYAAIQQ RNVVEIGDIQ KVIVSCLRHR LRKDPLEIIE SGEKIQKAFT NIF