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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
FunctionProvides the D-alanine required for cell wall biosynthesis. Transforms L-alanine to D-alanine [catalytic activity: L-alanine = D-alanine]
ProductAlanine racemase Alr
CommentsRv3423c, (MTCY78.06), len: 408 aa. Alr, alanine racemase, equivalent to P38056|ALR_MYCLE|ML0375|B229_C3_243 alanine racemase from Mycobacterium leprae (388 aa), FASTA scores: opt: 2160, E(): 2.3e-124, (84.35% identity in 384 aa overlap). Also highly similar to other alanine racemases e.g. Q9L888|ALR_MYCAV from Mycobacterium avium (391 aa), FASTA scores: opt: 2103, E(): 6.8e-121, (83.6% identity in 384 aa overlap); P94967|ALR_MYCSM from Mycobacterium smegmatis (389 aa), FASTA scores: opt: 1721, E(): 1.3e-97, (67.25% identity in 385 aa overlap); O86786|ALR_STRCO|SC6G4.23 from Streptomyces coelicolor (391 aa), FASTA scores: opt: 1041, E(): 3.7e-56, (47.65% identity in 380 aa overlap); etc. Contains Pfam entry PF00842 Alanine racemase. Belongs to the alanine racemase family.
Functional categoryIntermediary metabolism and respiration
ProteomicsIdentified by mass spectrometry in Triton X-114 extracts of M. tuberculosis H37Rv (See Malen et al., 2010). Identified by mass spectrometry in the culture filtrate, membrane protein fraction, and whole cell lysates of M. tuberculosis H37Rv (See de Souza et al., 2011).
MutantEssential gene for in vitro growth of H37Rv, by analysis of saturated Himar1 transposon libraries (see DeJesus et al. 2017). Essential gene by Himar1 transposon mutagenesis in H37Rv strain (see Sassetti et al., 2003). 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|Rv3423c|alr