Re: [ccp4bb] units of the B factor

2009-11-22 Thread Ian Tickle
> Interesting that the IUCr committee report that Ian pointed > out stated > "we recommend that the use of B be discouraged". Hmm... Good > luck with > that! You seem to be implying, if I understand you correctly, that the IUCr report recommends that the use of the equivalent isotropic B be d

Re: [ccp4bb] hairpin formation in gene

2009-11-22 Thread Sangeetha Vedula
Thank you, everyone, for your replies. I did go ahead and order it as is because expression is a strange beast. One never knows what may happen, I feel. It is around the 600th bp or so. Yes, it was detected by computational means. I am hesitant to change codon usage at this stage just in case the

Re: [ccp4bb] units of the B factor

2009-11-22 Thread Ian Tickle
Back to the original problem: what are the units of B and > ? I haven't been able to work that out. The first > wack is to say the B occurs in the term > > Exp( -B (Sin(theta)/lambda)^2) > > and we've learned that the unit of Sin(theta)/lamda is 1/Angstrom > and the argument of

Re: [ccp4bb] units of the B factor

2009-11-22 Thread Artem Evdokimov
The angle value and the associated basic trigonometric functions (sin, cos, tan) are derived from a ratio of two lengths* and therefore are dimensionless. It's trivial but important to mention that there is no absolute requirement of units of any kind whatsoever with respect to angles or to the t

[ccp4bb] Postdoctoral positions at Cornell University, Ithaca, New York, USA

2009-11-22 Thread Ailong Ke
A crystallography postdoctoral position in RNA Biology is available immediately in the lab of Prof. Ailong Ke at Cornell University, Ithaca, NY, USA. Related research projects will employ integrated approaches to understand the structure and function of RNA and RNA-protein complexes. The lab is

[ccp4bb] San Diego Crystallography Short Course Dec 14-15, 2009

2009-11-22 Thread Bernhard Rupp
Dear All, for those who need a good excuse to escape the winter chill - there are only a couple of places left for the short-course on Biomolecular Crystallography/SBDD in San Diego/La Jolla. The fee includes a copy of my book. Details: http://www.ruppweb.org/workshops/Molsoft_2009.htm Best

Re: [ccp4bb] units of the B factor

2009-11-22 Thread Dale Tronrud
Artem Evdokimov wrote: The angle value and the associated basic trigonometric functions (sin, cos, tan) are derived from a ratio of two lengths* and therefore are dimensionless. It's trivial but important to mention that there is no absolute requirement of units of any kind whatsoever with res