That’s because the ones om the left seem to be dragged into the wrong density. Sphere refine in Coot should clear that right up. After that it may very well look like a disulfide.
Cheers, Robbie Sent from my Windows 10 phone ________________________________ From: CCP4 bulletin board <CCP4BB@JISCMAIL.AC.UK> on behalf of Eleanor Dodson <0000176a9d5ebad7-dmarc-requ...@jiscmail.ac.uk> Sent: Wednesday, July 4, 2018 12:18:12 PM To: CCP4BB@JISCMAIL.AC.UK Subject: Re: [ccp4bb] disulfate bond ? Hmm - the "S" atoms look too close - S=S bond ~ 2A Eleanor On 4 July 2018 at 07:26, 张士军 <21620150150...@stu.xmu.edu.cn<mailto:21620150150...@stu.xmu.edu.cn>> wrote: Hi all I got a structure which has COA in it, and the SH in the tail of COA is very close to the SH side chain of Cys in the structure. I don't know whether it is disulfate bond or not? I remember they should link together if they are disulfate bond,am I right? so what could this be? Thanks a lot!!! best regards shijun ________________________________ To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=CCP4BB&A=1 ________________________________ To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=CCP4BB&A=1 ######################################################################## To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=CCP4BB&A=1