Re: [ccp4bb] High Temperature Factors with TLS

2023-08-02 Thread Rezaul Karim
If  the correct atoms are in place, resetting the b factors of those atoms/residues to a constant e.g. 5.00 and refining in phenix with individual B-factors ON should take care of these.Best,RezaSent from my iPhoneOn Aug 2, 2023, at 7:42 AM, Thomas, Leonard M. wrote: Hello All, A general

Re: [ccp4bb] High Temperature Factors with TLS

2023-08-02 Thread Jon Cooper
Hello, is it definitely due to the TLS refinement? I guess you have tried without TLS and don't see the same effect i.e. the B-factors are more consistent. It would be good to know. Best wishes, Jon Cooper. jon.b.coo...@protonmail.com Sent from Proton Mail mobile Original Message

Re: [ccp4bb] High Temperature Factors with TLS

2023-08-02 Thread Robbie Joosten
if the B-factor anomaly remains. Cheers, Robbie > -Original Message- > From: CCP4 bulletin board On Behalf Of Daniel M. > Himmel, Ph. D. > Sent: Wednesday, August 2, 2023 17:06 > To: CCP4BB@JISCMAIL.AC.UK > Subject: Re: [ccp4bb] High Temperature Factors with TLS > >

Re: [ccp4bb] High Temperature Factors with TLS

2023-08-02 Thread Thomas, Leonard M.
So the Phosphates are actually the end of the ADP which the Sulfer atoms are Cystiene suffers. The Fo-Fc maps show large positive peaks for each position also. The TLS groups is the whole protein chain, there are 4 in the asymmetric unit as the biological unit I think is a dimer of 2

Re: [ccp4bb] High Temperature Factors with TLS

2023-08-02 Thread Daniel M. Himmel, Ph. D.
One possible explanation for high B-factors, assuming the coordinates are refined correctly, is partial occupancy and high mobility (dynamics) at those heavy atom sites. Also, one should check Fo-Fc maps of those positions. Are other atom types substituting for some of those heavy atoms (such as

Re: [ccp4bb] High Temperature Factors with TLS

2023-08-02 Thread Eleanor Dodson
You need to tell us more details - is this a deposited structure? Eleanor On Wed, 2 Aug 2023 at 15:42, Thomas, Leonard M. wrote: > Hello All, > > A general questions though phenix.refine is being used for refinement. A > student I am working with has a structure that was solved and initially >

[ccp4bb] High Temperature Factors with TLS

2023-08-02 Thread Thomas, Leonard M.
Hello All, A general questions though phenix.refine is being used for refinement. A student I am working with has a structure that was solved and initially refined using TLS and NCS parameters. They were given the structure to gain some experience in refinement and they have been asking me