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Search term: Rv3264c

General annotation | Coordinates | Sequence | Structural information | Orthologs/Cross-references | Interacting Drugs/Compounds | Bibliography
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General annotation
Gene namemanB
Rv numberRv3264c
FunctionInvolved in GDP-mannose biosynthesis and biosynthesis of nucleotide-activated glycero-manno-heptose (D-alpha-D pathway): generates GDP-mannose and phosphate from GTP and alpha-D-mannose 1-phosphate. MANB product is needed for all mannosyl glycolipids and polysaccharides which, like rhamnosyl residues, are an important part of the mycobacterium envelope [catalytic activity: alpha-D-mannose 1-phosphate + GTP = GDP-mannose + phosphate].
ProductD-alpha-D-mannose-1-phosphate guanylyltransferase ManB (D-alpha-D-heptose-1-phosphate guanylyltransferase)
CommentsRv3264c, (MTCY71.04c), len: 359 aa. ManB (alternate gene name: hddC), D-alpha-D-mannose-1-phosphate guanylyltransferase (see citations below), equivalent to Q9CCK6|RMLA2|ML0753 putative sugar-phosphate nucleotidyl transferase from Mycobacterium leprae (358 aa), FASTA scores: opt: 2075, E(): 2.7e-115, (86.9% identity in 359 aa overlap). Also similar to others e.g. Q9KZK6|SCE34.20c putative nucleotide phosphorylase from Streptomyces coelicolor (360 aa), FASTA scores: opt: 1314, E(): 2.2e-70, (57.0% identity in 358 aa overlap); Q9KZP4|SC1A8A.08 putative mannose-1-phosphate guanyltransferase from Streptomyces coelicolor (831 aa), FASTA scores: opt: 699, E(): 8.6e-34, (34.45% identity in 354 aa overlap) (only similarity in N-terminus for this one); P74589|SLL1496 mannose-1-phosphate guanyltransferase from Synechocystis sp. strain PCC 6803 (843 aa), FASTA scores: opt: 692, E(): 2.3e-33, (35.1% identity in 342 aa overlap) (only similarity in N-terminus for this one too); BAB59222|TVG0079558 mannose-1-phosphate guanyltransferase from Thermoplasma volcanium (359 aa), FASTA scores: opt: 664, E(): 5.2e-32, (34.6% identity in 338 aa overlap); Q9ZTW5|GMP GDP-mannose pyrophosphorylase from Solanum tuberosum (Potato) (361 aa), FASTA scores: opt: 636, E(): 2.3e-30, (34.65% identity in 361 aa overlap); etc. Belongs to family 2 of mannose-6-phosphate isomerases. Note that previously known as rmlA2.
Molecular mass (Da)37839
Isoelectric point4.8208
Gene length (bp)1080
Protein length359
Location (kb)3644.9

Functional categorycell wall and cell processes

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 Triton X-114 extracts of M. tuberculosis H37Rv (See Malen et al., 2010). Identified by mass spectrometry in the membrane protein fraction and whole cell lysates of M. tuberculosis H37Rv but not the culture filtrate (See de Souza et al., 2011). Translational start site supported by proteomics data (See de Souza et al., 2011) (See Kelkar et al., 2011).
Mutationessential gene by Himar1-based transposon mutagenesis in H37Rv strain (see Sassetti et al., 2003). Essential gene for in vitro growth of H37Rv, by sequencing of Himar1-based transposon mutagenesis (See Griffin et al., 2011). Check for mutants available at TARGET website


Protein sequence in FASTA format
>M. tuberculosis H37Rv|Rv3264c|manB
Blastp: Pre-computed results
TransMembrane prediction using Hidden Markov Models: TMHMM
Genomic sequence

Add extra bases upstream (5') and downstream (3')

Structural information
Protein Data BankNo structure available

Enzyme Classification2.7.7.13
Gene Ontologymannose-1-phosphate guanylyltransferase activity
biosynthetic process
M. bovisMb3292c
M. lepraeML0753
M. marinumMMAR_1277
Multiple Sequences Alignment: between orthologs

Interacting Drugs/Compounds
TDR TargetsRv3264c
Drug Resistance MutationsEthambutol

Expression Data

Ma Y, Stern RJ, Scherman MS, Vissa VD, Yan W, Jones VC, Zhang F, Franzblau SG, Lewis WH, McNeil MR,
Drug targeting Mycobacterium tuberculosis cell wall synthesis: genetics of dTDP -rhamnose synthetic enzymes and development of a microtiter plate-based screen for inhibitors of conversion of dTDP -glucose to dTDP-rhamnose
Antimicrob Agents Chemother (2001) 45(5):1407-16
Cited for: Product/Biochemistry/Function
Valvano MA, Messner P, Kosma P,
Novel pathways for biosynthesis of nucleotide-activated glycero -manno-heptose precursors of bacterial glycoproteins and cell surface polysaccharides
Microbiology (2002) 148(Pt 7):1979-89
Cited for: Review/Function
Sassetti CM, Boyd DH, Rubin EJ,
Genes required for mycobacterial growth defined by high density mutagenesis.
Mol Microbiol (2003) 48(1):77-84
Cited for: Mutant
Gu S, Chen J, Dobos KM, Bradbury EM, Belisle JT, Chen X,
Comprehensive proteomic profiling of the membrane constituents of a Mycobacterium tuberculosis strain.
Mol Cell Proteomics (2003) 2(12):1284-96
Cited for: Proteomics
Mawuenyega KG, Forst CV, Dobos KM, Belisle JT, Chen J, Bradbury EM, Bradbury AR, Chen X,
Mycobacterium tuberculosis functional network analysis by global subcellular protein profiling.
Mol Biol Cell (2005) 16(1):396-404
Cited for: Proteomics
Malen H, Pathak S, Softeland T, de Souza GA, Wiker HG,
Definition of novel cell envelope associated proteins in Triton X-114 extracts of Mycobacterium tuberculosis H37Rv.
BMC Microbiol (2010) 10:132
Cited for: Proteomics
de Souza GA, Arntzen MO, Fortuin S, Schurch AC, Malen H, McEvoy CR, van Soolingen D, Thiede B, Warren RM, Wiker HG,
Proteogenomic analysis of polymorphisms and gene annotation divergences in prokaryotes using a clustered mass spectrometry-friendly database.
Mol Cell Proteomics (2011) 10(1):M110.002527
Cited for: Proteomics/Sequence
de Souza GA, Leversen NA, Malen H, Wiker HG,
Bacterial proteins with cleaved or uncleaved signal peptides of the general secretory pathway.
J Proteomics (2011) 75(2):502-10
Cited for: Proteomics
Kelkar DS, Kumar D, Kumar P, Balakrishnan L, Muthusamy B, Yadav AK, Shrivastava P, Marimuthu A, Anand S, Sundaram H, Kingsbury R, Harsha HC, Nair B, Prasad TS, Chauhan DS, Katoch K, Katoch VM, Kumar P, Chaerkady R, Ramachandran S, Dash D, Pandey A,
Proteogenomic analysis of Mycobacterium tuberculosis by high resolution mass spectrometry.
Mol Cell Proteomics (2011) 10(12):M111.011627
Cited for: Proteomics/Sequence
Griffin JE, Gawronski JD, Dejesus MA, Ioerger TR, Akerley BJ, Sassetti CM,
High-resolution phenotypic profiling defines genes essential for mycobacterial growth and cholesterol catabolism.
PLoS Pathog (2011) 7(9):e1002251
Cited for: Mutant
Ning B, Elbein AD,
Purification and properties of mycobacterial GDP-mannose pyrophosphorylase
Arch Biochem Biophys (1999) 362(2):339-45
Cited for: Homolog/Product/Biochemistry/Function