Figure 4
The sites of specific radiation damage present in the first two data sets of the radiation damage series collected from a crystal of acetylcholinesterase by Weik et al. (2000) are detected by RABDAM. (a) The Fobs (data set 1) − Fcalc (data set 1) difference map, contoured at ±3σ in green/red. (b) The acetylcholinesterase structure coloured by BDamage from blue (= low) through green to red (= high), also highlighting the individual BDamage values of the cystine side chain atoms. The pattern of damage to the three intrachain disulfide bonds of acetylcholinesterase detected in (a) correlates with the BDamage values calculated in (b). All molecular graphics images were rendered using CCP4mg (McNicholas et al., 2011). |