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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
FunctionPredicted to be involved in lipid catabolism
ProductOxygenase component of 3-ketosteroid-9-alpha-hydroxylase KshA
CommentsRv3526, (MTCY03C7.30c), len: 386 aa. kshA, oxygenase component of 3-ketosteroid-9-alpha-hydroxylase, highly similar, except in C-terminus (also longer 69 aa), to O69348|ORF12 protein (function unknown) from Rhodococcus erythropolis (316 aa) FASTA scores: opt: 1137, E(): 6.9e-65, (59.6% identity in 250 aa overlap). Also some similarity with several aminopyrrolnitrin oxidases (PRND proteins, involved in the pathway for pyrrolnitrin biosynthesis, a secondary metabolite derived from tryptophan which has strong anti-fungal activity) e.g. Q9RPG0|PRND from Myxococcus fulvus (379 aa), FASTA scores: opt: 322, E(): 4.4e-13, (25.85% identity in 352 aa overlap); Q9RPG4|PRND from Burkholderia cepacia (Pseudomonas cepacia) (373 aa) FASTA scores: opt: 306, E(): 4.5e-12, (25.2% identity in 373 aa overlap); P95483|PRND from Pseudomonas fluorescens (363 aa), FASTA scores: opt: 305, E(): 5.1e-12, (25.0% identity in 372 aa overlap); etc. And also some similarity to other putative enzymes like dioxygenases, oxidases, vanillate O-demethyl oxygenase, etc.
Functional categoryIntermediary metabolism and respiration
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).
TranscriptomicsmRNA identified by microarray analysis and up-regulated after 4h of starvation (see citation below).
MutantNon-essential gene for in vitro growth of H37Rv in a MtbYM rich medium, by Himar1 transposon mutagenesis (see Minato et al. 2019). Non-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 and CDC1551 strains (see Sassetti et al., 2003 and Lamichhane et al., 2003). Non-essential gene for in vitro growth of H37Rv, but essential for in vitro growth on cholesterol; by sequencing of Himar1-based transposon mutagenesis (See Griffin et al., 2011). M. tuberculosis H37Rv kshA|Rv3526 mutant shows in vitro growth defect with cholesterol, 5-alpha-androstane-3,17-dione, 4-androstene-3,17-dione as carbon source; mutant shows growth defect in BALB/c mice and in resting and activated J774A.1 and BALB/c bone marrow-derived macrophages; SCID mice infected with mutant survive longer than those infected with wild-type (See Hu et al., 2010).
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|Rv3526|kshA