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virulence, detoxification, adaptation
information pathways
cell wall and cell processes
stable RNAs
insertion seqs and phages
intermediary metabolism and respiration
regulatory proteins
conserved hypotheticals
lipid metabolism
General annotation
FunctionInvolved in the mycolic acid modification or synthesis; essential for the cyclopropanation function. Required for cording and mycolic acid cyclopropane ring synthesis in the cell wall.
ProductMycolic acid synthase PcaA (cyclopropane synthase)
CommentsRv0470c, (MTV038.14), len: 287 aa. PcaA (previously known as umaA2), mycolic acid synthase (cyclopropane synthase) (see citations below), equivalent to CAC31976.1|AL583925 Mycolic acid synthase from Mycobacterium leprae (295 aa); and highly similar to S72886|B2168_F3_130|467038|AAA17222.1|U00018 hypothetical protein from Mycobacterium leprae (308 aa); Q11195|CFA1_MYCTU cyclopropane-fatty-acyl-phospholipid synthase 1 (cyclopropane mycolic acid synthase 1) (287 aa) (see Glickman et al., 2000); U27357|MTU27357_1 cyclopropane mycolic acid synthase from Mycobacterium tuberculosis (287 aa), FASTA scores: opt: 1415, E(): 0, (72.8% identity in 287 aa overlap); and related enzymes e.g. MTCY20H10.25c|Z92772|MTY20H10_26 (287 aa), FASTA scores: opt: 1387, E(): 0, (72.5% identity in 287 aa overlap).
Functional categoryLipid metabolism
ProteomicsIdentified by mass spectrometry in whole cell lysates of M. tuberculosis H37Rv but not the culture filtrate or membrane protein fraction (See de Souza et al., 2011). Translational start site supported by proteomics data (See Kelkar et al., 2011).
TranscriptomicsmRNA identified by DNA microarray analysis and possibly down-regulated by hspR|Rv0353 and hrcA|Rv2374c (see Stewart et al., 2002).
MutantNon-essential gene for in vitro growth of H37Rv, by analysis of saturated Himar1 transposon libraries (see DeJesus et al. 2017). Non essential gene by Himar1 transposon mutagenesis in H37Rv strain (see Sassetti et al., 2003). Required for growth in C57BL/6J mouse spleen, by transposon site hybridization (TraSH) in H37Rv (See Sassetti and Rubin, 2003). Non-essential gene for in vitro growth of H37Rv, by Himar1 transposon mutagenesis (See Griffin et al., 2011).
Check for mutants available at TARGET website
Genomic sequence
Feature type Upstream flanking region (bp) Downstream flanking region (bp) Update
Protein sequence
>Mycobacterium tuberculosis H37Rv|Rv0470c|pcaA