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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 active transport of inorganic phosphate across the membrane (import). This is one of the proteins required for binding-protein-mediated phosphate transport.
ProductPeriplasmic phosphate-binding lipoprotein PstS3 (PBP-3) (PstS3) (PHOS1)
CommentsRv0928, (MTCY21C12.22), len: 370 aa. PstS3 (previously known as phoS2), phosphate-binding lipoprotein component of inorganic phosphate transport system (see citations below), highly similar to others from Mycobacterium leprae e.g. Q50099|PSTS3|PHOS1 phosphate-binding protein 3 precursor (328 aa), FASTA scores: opt: 1772, E(): 0, (79.6% identity in 328 aa overlap); and highly similar to others e.g. AAF74819.1|AF137360_1|AF137360 periplasmic phosphate permease from Mycobacterium avium (369 aa). Also highly similar to Rv0932c|MTCY08D9.07|pstS2 phosphate-binding periplasmic lipoprotein (370 aa); and Rv0934|pstS1 phosphate-binding periplasmic lipoprotein (374 aa) from Mycobacterium tuberculosis (Mycobacterium tuberculosis seems to have three PstS-like proteins, others being Rv0932c and Rv0934c). Contains lipoprotein signature (PS00013) at N-terminus. Belongs to family of phosphate receptors for bacterial ABC-type lipoprotein transporters.
Functional categoryCell wall and cell processes
ProteomicsIdentified in the membrane fraction of M. tuberculosis H37Rv using nanoLC-MS/MS (See Xiong et al., 2005). Predicted surface lipoprotein - identified in culture filtrates of M. tuberculosis H37Rv; signal peptide predicted (See Malen et al., 2007). Putative glycoprotein identified by LC/ESI-MS/MS in the culture filtrate of M. tuberculosis H37Rv (See Gonzalez-Zamorano et al., 2009). Identified by mass spectrometry in Triton X-114 extracts of M. tuberculosis H37Rv (See Malen et al., 2010). Identified by mass spectrometry in M. tuberculosis H37Rv-infected guinea pig lungs at 90 days but not 30 days (See Kruh 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).
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 survival in primary murine macrophages, by transposon site hybridization (TraSH) in H37Rv (See Rengarajan et al., 2005).
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|Rv0928|pstS3