Besides the anomalous difference peak which might be similar in height to the anom diff peak from an intrinsic sulfur found in cysteine or methionine, also consider hydrogen bonding.
In general, a sulfate will not be donating a hydrogen bond. A phosphate probably will. ######################################################################## To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=CCP4BB&A=1
