Re: [ccp4bb] ideal bond length and bong angel

2008-01-10 Thread Eleanor Dodson
Please do NOT use the BB for abuse. Eleanor Gerard DVD Kleywegt wrote: Be care, you insolence might get someone sent disappear. is the chinese secret service editing my incoming mail already, or are you merely using a microsoft grammar checker? --dvd

Re: [ccp4bb] ideal bond length and bong angel

2008-01-10 Thread Gerard DVD Kleywegt
Please do NOT use the BB for abuse. thank you for your support. although i think some abuse of the english language is unavoidable in an international forum like this --gerard (more important issue: http://www.irrepressible.info/)

Re: [ccp4bb] ideal bond length and bong angel

2008-01-09 Thread Stuart McNicholas
On 9 Jan 2008, at 10:34, Eleanor Dodson wrote: Bong angels are probably ideal already! There is really no such animal as an ideal bondlength or angle - they depend to some extent on the atomic environment. Not to a complete extent? Stuart

Re: [ccp4bb] ideal bond length and bong angel

2008-01-09 Thread Eleanor Dodson
Bong angels are probably ideal already! There is really no such animal as an ideal bondlength or angle - they depend to some extent on the atomic environment. There are papers by Engh and Huber who looked at small molecule highly refined structures to get AVERAGE bond lengths and standard

Re: [ccp4bb] ideal bond length and bong angel

2008-01-09 Thread Gerard DVD Kleywegt
Can you explain the define of the bond length and bond angel--especially bond angel--here? i leave the definition of angels (be they ideal or not) to clerics, but if you want to find out about bonds and angles, AND YOUR SUPERVISOR IS REALLY UNABLE OR TOO BUSY TO EXPLAIN THESE BASIC

Re: [ccp4bb] ideal bond length and bong angel

2008-01-09 Thread yang li
By the way, I think my bad english embarrassed my meaning. What I want to say is which bond length is used as the standard? the C=N or Ca-N or even the side chains? Or all of them?Which angel is used to compare, the Ca-C'-N or C'-N-Ca or others. At first I suppose the bond length only

Re: [ccp4bb] ideal bond length and bong angel

2008-01-09 Thread yang li
Dear Prof Gerard: In fact I have read your Model Validation on-line, and I have to say it is youe lecture that made me to think about this problem, though I have used it as a common stand for the quality of the model without understand it for a long time. And the

Re: [ccp4bb] ideal bond length and bong angel

2008-01-09 Thread Gerard DVD Kleywegt
them today before I post my mail, but unable to access them. For some reason, wiki is forbiddon here. I really coouldnot find the best answer and have discussed i am shocked. i just checked with one of my 25 chinese students here and indeed even universities in china do not have access to a

Re: [ccp4bb] ideal bond length and bong angel

2008-01-09 Thread Andreas Förster
Hey Gerard, wikipedia might tell you how to angle for fishes, but I fear it falls short of teaching you how to fish for angels. Andreas Imperial College of Aquatic and Fisheries Sciences London Gerard DVD Kleywegt wrote: Can you explain the define of the bond length and bond

Re: [ccp4bb] ideal bond length and bong angel

2008-01-09 Thread David J. Schuller
On Wed, 2008-01-09 at 12:47 +0100, Gerard DVD Kleywegt wrote: (rhetorical question of the day: just like teaching a person how to fish is better than to give them a fish, isn't providing the url to google or wikipedia better than providing an answer to a basic question?) You can read a few

Re: [ccp4bb] ideal bond length and bong angel

2008-01-09 Thread Mischa Machius
Simply use a bong for a while, and you will hear the angels sing :) It's amazing to see how this thread devolved, within two or three posts, into a discussion about drug abuse and totalitarian political regimes... Good way to start the day :) On Jan 9, 2008, at 8:35 AM, Jim Pflugrath

Re: [ccp4bb] ideal bond length and bong angel

2008-01-09 Thread Jim Pflugrath
Bong angels are probably ideal already! Please explain, so that I can teach this to my students. :) Jim

Re: [ccp4bb] ideal bond length and bong angel

2008-01-09 Thread William Scott
Hi Yang Li: Macromolecular crystal refinement programs use ideal bond lengths and angles. The simplest ones just assume any carbon-carbon single bond (C-C) is the same as any other, and use one average value, and any carbon-carbon double bond (C=C) is the same as any other, and use another