Re: [ccp4bb] Covalent Cysteine Aduct

[Robbie P. Joosten]

Are you absolutely sure about the conditions? The blob next to the sulfur looks pretty fat so I would guess BME.

Cheers,

Robbie

On 27 Mar 2020 21:32, "Cowan, Richard H. (Dr.)" <rc...@leicester.ac.uk> wrote:

Hi All,

During the current enforced shutdown, I've been going back over some older data and spotted this in one of my structures:

It's what appears to be a covalent aduct onto a cysteine on the surface (originally modeled as 2 waters!). The condition was optimized from the Morpheus Screen condition D1, so MES/Imidazole pH 6.5, PEG 500MME, PEG20k and a mix of 1,6-Hexanediol, 1-Butanol, 1,2-Propanediol, 2-Propanol, 1,4-Butanediol and 1,3-Propanediol. The data has been cut at 1.7A, with good stats.

Has anyone seen anything like this before? what do you think my best bet for modeling this is? and aduct of 1,3-propanediol? It looks too short for 1-butanol or 1,4-butandiol, and it's linear so 2-propanol and 1,2-propanediol seem unlikely.

Thanks,

Dr Richard Cowan
Research Associate

 

HWLSB 1/05

Department of Biochemistry

University of Leicester

Lancaster Road

Leicester, LE1 9HN, U.K.

 

Phone +44 (0) 116 229 7077

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