Abstract
Interaction of the Escherichia coli PapD chaperone with the synthetic peptide PapG308-314 (Thr-Met-Val-Leu-Ser-Phe-Pro), corresponding to the seven C-terminal residues of the PapG pilus subunit, was studied by transferred nuclear Overhauser effect (TRNOE) spectroscopy. The observation of cross-peaks corresponding to either intraresidue or sequential C(α)H/NH and C(β)H/NH TRNOEs and the absence of sequential NH(i)/NH(i+1) TROEs indicate that the peptide binds to PapD in an extended conformation. In addition, line-broadening effects gave information of the peptide's mode of interaction with PapD. These observations were in excellent agreement with a recent crystal structure of a PapG peptide complexed with PapD.
Original language | English |
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Pages (from-to) | 115-120 |
Number of pages | 6 |
Journal | FEBS Letters |
Volume | 412 |
Issue number | 1 |
DOIs | |
State | Published - Jul 21 1997 |
Keywords
- NMR
- P pili
- PapD chaperone
- Protein-peptide interaction
- Transferred NOE