Designing cyclic competence-stimulating peptide (CSP) analogs with pan-group quorum-sensing inhibition activity inStreptococcus pneumoniae.
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
National Science Foundation (NSF, United States)
Orn and Asp are chemically added to the sequence on 6th and 10th positions, and then cyclized. However, during structure calculation, the 10th residue is labeled as Asn for convenience to construct the macrocycle and Asn10 is kept in the final coordinate and chemical shift file for consistency. The actual sequence is still: EMRLS(ORN)FFR(ASP)FILQRKK.
torsion angle dynamics with eefx refinement
1.9 mM CSP1-cyc(Orn6D10), 250 mM deuterium DPC, 137 mM sodium chloride, 2.7 mM potassium chloride, 10 mM Na2HPO4, 1.8 mM KH2PO4, 90% H2O/10% D2O
Schwieters, Kuszewski, Tjandra and Clore
modulator for pneumococcal quorum sensing, synthetic cyclic peptide, BIOSYNTHETIC PROTEIN