Mapping phosphoproteins in Mycoplasma genitalium and Mycoplasma pneumoniae.

ABSTRACT:

Background

Little is known regarding the extent or targets of phosphorylation in mycoplasmas, yet in many other bacterial species phosphorylation is known to play an important role in signaling and regulation of cellular processes. To determine the prevalence of phosphorylation in mycoplasmas, we examined the CHAPS-soluble protein fractions of Mycoplasma genitalium and Mycoplasma pneumoniae by two-dimensional gel electrophoresis (2-DE), using a combination of Pro-Q Diamond phosphoprotein stain and 33P labeling. Protein spots that were positive for phosphorylation were identified by peptide mass fingerprinting using MALDI-TOF-TOF mass spectrometry.

Results

We identified a total of 24 distinct phosphoproteins, about 3% and 5% of the total protein complement in M. pneumoniae an

SUBMITTER: Su HC 

PROVIDER: S-EPMC1947986 | biostudies-literature | 2007 Jul

REPOSITORIES: biostudies-literature