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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
FunctionBiotransformation enzyme that catalyzes the hydrolysis of epoxides (alkene oxides, oxiranes) and arene oxides to less reactive and more water soluble dihydrodiols by the trans addition of water. Thought to be involved in detoxification reactions following oxidative damage to lipids [catalytic activity: an epoxide + H(2)O = a glycol].
ProductProbable epoxide hydrolase EphA (epoxide hydratase) (arene-oxide hydratase)
CommentsRv3617, (MTCY07H7B.05c, MTCY15C10.35c), len: 322 aa. Probable ephA, epoxide hydrolase (see citation below), similar to many e.g. Q9A8W9|CC1229 from Caulobacter crescentus (330 aa), FASTA scores: opt: 965, E(): 1.8e-51, (46.15% identity in 323 aa overlap); Q9M9W5|F18C1.13 from Arabidopsis thaliana (Mouse-ear cress) (331 aa), FASTA scores: opt: 778, E(): 4.3e-40, (40.35% identity in 332 aa overlap); Q9S7P1 from Oryza sativa (Rice) (322 aa), FASTA scores: opt: 774, E(): 7.4e-40, (41.1% identity in 321 aa overlap); P80299|HYES_RAT|EPHX2 from Rattus norvegicus (Rat) (554 aa), FASTA scores: opt: 759, E(): 9.5e-39, (40.5% identity in 306 aa overlap) (similarity only with the C-terminal part for this one); etc. Similar to alpha/beta hydrolase fold. Contains PS00888 Cyclic nucleotide-binding domain signature 1.
Functional categoryVirulence, detoxification, adaptation
ProteomicsIdentified in the membrane fraction of M. tuberculosis H37Rv using 1D-SDS-PAGE and uLC-MS/MS (See Gu et al., 2003). Identified in the cell membrane fraction of M. tuberculosis H37Rv using 2DLC/MS (See Mawuenyega et al., 2005). Identified 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).
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 CDC1551 strain (see Lamichhane et al., 2003). Non-essential gene for in vitro growth of H37Rv, by Himar1 transposon mutagenesis (See Griffin et al., 2011). Found to be deleted (partially or completely) in one or more clinical isolates (See Tsolaki et al., 2004).
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|Rv3617|ephA