From Proteopediaproteopedia link
NMR solution structure of B. subtilis PrsA PPIase
[PRSA_BACSU] Essential protein that plays a major role in protein secretion by helping the post-translocational extracellular folding of several secreted proteins. Has PPIase activity but it is not essential for its function in vivo.
Publication Abstract from PubMed
PrsA is a peptidyl-prolyl isomerase (PPIase) from Bacillus subtilis belonging to the parvulin family of PPIases. It is a membrane bound lipoprotein at the membrane-wall interface, involved in folding of exported proteins. We present the NMR solution structure of the PPIase domain of PrsA, the first from a Gram-positive bacterium. In addition we mapped out the active site with NMR titration experiments. A high degree of conservation with other members of the parvulin family was revealed in the structure and binding site. Interactions with substrate peptides were also characterized by mutated domains revealing that H122 is indispensable for overall correct folding.
NMR solution structure and characterization of substrate binding site of the PPIase domain of PrsA protein from Bacillus subtilis.,Tossavainen H, Permi P, Purhonen SL, Sarvas M, Kilpelainen I, Seppala R FEBS Lett. 2006 Mar 20;580(7):1822-6. Epub 2006 Feb 24. PMID:16516208
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.