Download MendeleyNMR structure and binding studies confirm that PA4608 from Pseudomonas aeruginosa is a PilZ domain and a c-di-GMP binding protein.
Ramelot, T.A., Yee, A., Cort, J.R., Semesi, A., Arrowsmith, C.H., Kennedy, M.A.(2007) Proteins 66: 266-271
- PubMed: 17096419
- DOI: https://doi.org/10.1002/prot.21199
- Primary Citation of Related Structures:
1YWU - PubMed Abstract:
PA4608 is a 125 residue protein from Pseudomonas aeruginosa with a recent identification as a PilZ domain and putative bis-(3'-5')-cyclic dimeric guanosine monophosphate (c-di-GMP) adaptor protein that plays a role in bacterial second-messenger regulated processes. The nuclear magnetic resonance (NMR) structure of PA4608 has been determined and c-di-GMP binding has been confirmed by NMR titration studies. The monomeric core structure of PA4608 contains a six-stranded anti-parallel beta barrel flanked by three helices. Conserved surface residues among PA4608 homologs suggest the c-di-GMP binding site is at one end of the barrel and includes residues in the helices as well as in the unstructured N-terminus. Chemical shift changes in PA4608 resonances upon titration with c-di-GMP confirm binding. This evidence supports the hypothesis that proteins containing PilZ domains are the long-sought c-di-GMP adaptor proteins.
Organizational Affiliation:
Pacific Northwest National Laboratory, Biological Sciences Division, Richland, Washington 99354, USA.
