From stoutepf %-% at %-% chemsci1.es.dupont.com Fri Sep 10 04:12:19 1993 Message-Id: <9309101311.AA06314(+ at +)chemsci1.es.dupont.com. chemsci1 chemsci1.es.dupont.com> Date: Fri, 10 Sep 1993 09:12:19 -0500 To: rlr {*at*} acsu.buffalo.edu (Raymond L. Roskwitakski) From: stoutepf |-at-| chemsci1.es.dupont.com (Pieter Stouten) Subject: Re: Measuring void On Thu, 9 Sep 1993 18:12:23, Raymond Roskwitakski wrote: >We have a hole (or void) in a protein which enters into the >active site. Would like to >determine its size quantatively, > Try out the all purpose modelling program WHAT IF that has an excellent cavity search module built in. One example where the cavity search worked beyond our expectations: we found a "hole" in the ras protein in the GTP state, which is exactly the right size for a tyrosine to move into, and we propose that that is exactly what happens upon hydrolysis of GTP to GDP. WHAT IF's author Gert Vriend can be reached at Vriend |-at-| EMBL-Heidelberg.DE. Hope this helps. Cheers, Pieter. Pieter Stouten, Senior Research Scientist || Computer Aided Drug Design Group || The Du Pont Merck Pharmaceutical Company || Adventures get spoiled P.O. Box 80353, Wilmington, DE 19880-0353 || by being reduced to data Phone: +1 (302) 695 3515 || -- Fax: +1 (302) 695 2813 || Poul Anderson ARA/Fax: +1 (302) 695 4324 || E-mail: stoutepf -A_T- chemsci1.es.dupont.com || E-mail: stoutepf -8 at 8- lldmpc.dnet.dupont.com ||