CMAS1_MYCTA
ID CMAS1_MYCTA Reviewed; 287 AA.
AC A5U866; Q11195;
DT 11-SEP-2007, integrated into UniProtKB/Swiss-Prot.
DT 10-JUL-2007, sequence version 1.
DT 03-AUG-2022, entry version 77.
DE RecName: Full=Cyclopropane mycolic acid synthase 1;
DE Short=CMAS;
DE EC=2.1.1.79 {ECO:0000269|PubMed:7604045};
DE AltName: Full=Cyclopropane-fatty-acyl-phospholipid synthase;
DE Short=CFA synthase;
DE Short=Cyclopropane fatty acid synthase;
DE AltName: Full=Mycolic acid methyltransferase;
DE Short=MA-MT;
DE AltName: Full=S-adenosylmethionine-dependent methyltransferase;
DE Short=AdoMet-MT;
DE Short=SAM-MT;
GN Name=cmaA1; Synonyms=cma1 {ECO:0000303|PubMed:7604045};
GN OrderedLocusNames=MRA_3431;
OS Mycobacterium tuberculosis (strain ATCC 25177 / H37Ra).
OC Bacteria; Actinobacteria; Corynebacteriales; Mycobacteriaceae;
OC Mycobacterium; Mycobacterium tuberculosis complex.
OX NCBI_TaxID=419947;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA], FUNCTION AS A CYCLOPROPANE SYNTHASE,
RP CATALYTIC ACTIVITY, AND NOMENCLATURE.
RC STRAIN=ATCC 25177 / H37Ra;
RX PubMed=7604045; DOI=10.1073/pnas.92.14.6630;
RA Yuan Y., Lee R.E., Besra G.S., Belisle J.T., Barry C.E. III;
RT "Identification of a gene involved in the biosynthesis of cyclopropanated
RT mycolic acids in Mycobacterium tuberculosis.";
RL Proc. Natl. Acad. Sci. U.S.A. 92:6630-6634(1995).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 25177 / H37Ra;
RX PubMed=18584054; DOI=10.1371/journal.pone.0002375;
RA Zheng H., Lu L., Wang B., Pu S., Zhang X., Zhu G., Shi W., Zhang L.,
RA Wang H., Wang S., Zhao G., Zhang Y.;
RT "Genetic basis of virulence attenuation revealed by comparative genomic
RT analysis of Mycobacterium tuberculosis strain H37Ra versus H37Rv.";
RL PLoS ONE 3:E2375-E2375(2008).
CC -!- FUNCTION: Catalyzes the conversion of a double bond to a cyclopropane
CC ring at the distal position of an alpha mycolic acid via the transfer
CC of a methylene group from S-adenosyl-L-methionine. Cyclopropanated
CC mycolic acids are key factors participating in cell envelope
CC permeability, host immunomodulation and persistence.
CC {ECO:0000269|PubMed:7604045}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=1-acyl-2-(9Z)-enoyl-sn-glycero-3-phospholipid + S-adenosyl-L-
CC methionine = 1-acyl-2-(9-cyclopronane)-acyl-sn-glycero-3-phospholipid
CC + H(+) + S-adenosyl-L-homocysteine; Xref=Rhea:RHEA:11988,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:57856, ChEBI:CHEBI:59789,
CC ChEBI:CHEBI:76593, ChEBI:CHEBI:76594; EC=2.1.1.79;
CC Evidence={ECO:0000269|PubMed:7604045};
CC -!- PATHWAY: Lipid metabolism; mycolic acid biosynthesis.
CC {ECO:0000305|PubMed:7604045}.
CC -!- SUBUNIT: Homodimer. {ECO:0000250|UniProtKB:P9WPB7}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the CFA/CMAS family. {ECO:0000305}.
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DR EMBL; U27357; AAA75624.1; -; Genomic_DNA.
DR EMBL; CP000611; ABQ75216.1; -; Genomic_DNA.
DR RefSeq; WP_003900041.1; NZ_CP016972.1.
DR AlphaFoldDB; A5U866; -.
DR SMR; A5U866; -.
DR EnsemblBacteria; ABQ75216; ABQ75216; MRA_3431.
DR KEGG; mra:MRA_3431; -.
DR eggNOG; COG2230; Bacteria.
DR HOGENOM; CLU_026434_3_0_11; -.
DR OMA; AQHFFTG; -.
DR OrthoDB; 1518440at2; -.
DR UniPathway; UPA00915; -.
DR Proteomes; UP000001988; Chromosome.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0008825; F:cyclopropane-fatty-acyl-phospholipid synthase activity; IMP:UniProtKB.
DR GO; GO:0008610; P:lipid biosynthetic process; IEA:InterPro.
DR GO; GO:0032259; P:methylation; IEA:UniProtKB-KW.
DR Gene3D; 3.40.50.150; -; 1.
DR InterPro; IPR003333; Mycolic_cyclopropane_synthase.
DR InterPro; IPR029063; SAM-dependent_MTases_sf.
DR PIRSF; PIRSF003085; CMAS; 1.
DR SUPFAM; SSF53335; SSF53335; 1.
PE 1: Evidence at protein level;
KW Cytoplasm; Lipid biosynthesis; Lipid metabolism; Methyltransferase;
KW S-adenosyl-L-methionine; Transferase.
FT CHAIN 1..287
FT /note="Cyclopropane mycolic acid synthase 1"
FT /id="PRO_0000300063"
FT ACT_SITE 269
FT /evidence="ECO:0000250|UniProtKB:P9WPB7"
FT BINDING 33..34
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000250|UniProtKB:P9WPB7"
FT BINDING 68..76
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000250|UniProtKB:P9WPB7"
FT BINDING 94..99
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000250|UniProtKB:P9WPB7"
FT BINDING 123..124
FT /ligand="S-adenosyl-L-methionine"
FT /ligand_id="ChEBI:CHEBI:59789"
FT /evidence="ECO:0000250|UniProtKB:P9WPB7"
SQ SEQUENCE 287 AA; 32461 MW; 7E254C15DF5FFF97 CRC64;
MPDELKPHFA NVQAHYDLSD DFFRLFLDPT QTYSCAYFER DDMTLQEAQI AKIDLALGKL
GLQPGMTLLD VGCGWGATMM RAVEKYDVNV VGLTLSKNQA NHVQQLVANS ENLRSKRVLL
AGWEQFDEPV DRIVSIGAFE HFGHERYDAF FSLAHRLLPA DGVMLLHTIT GLHPKEIHER
GLPMSFTFAR FLKFIVTEIF PGGRLPSIPM VQECASANGF TVTRVQSLQP HYAKTLDLWS
AALQANKGQA IALQSEEVYE RYMKYLTGCA EMFRIGYIDV NQFTCQK