Structure of an RNase-related protein from Calystegia sepium.
Rabijns, A., Verboven, C., Rouge, P., Barre, A., Van Damme, E.J., Peumans, W.J., De Ranter, C.J.(2002) Acta Crystallogr D Biol Crystallogr 58: 627-633
- PubMed: 11914487
- DOI: https://doi.org/10.1107/s090744490200255x
- Primary Citation of Related Structures:
1JY5 - PubMed Abstract:
The structure of a catalytically inactive RNase-related protein from Calystegia sepium (CalsepRRP) has been resolved by protein crystallography at a resolution of 2.05 A and an R factor of 20.74%. Although the protein is completely devoid of ribonuclease activity, it adopts the typical alpha + beta structure of non-base-specific RNases. Analysis of the structure revealed that two amino-acid substitutions in the 'active' P1 site, in combination with the less hydrophobic/aromatic character of the B1 base-recognition site and a completely disrupted B2 base-recognition site, might account for this complete lack of activity.
Organizational Affiliation:
Laboratory of Analytical Chemistry and Medicinal Physicochemistry, Faculty of Pharmaceutical Sciences, K. U. Leuven, E. Van Evenstraat 4, B-3000 Leuven, Belgium.