Metal binding to porcine pancreatic elastase: calcium or not calcium.

VVGGTEAQRNSWPSQISLQYRSGSSWAHTCGGTLIRQNWVMTAAHCVDRELTFRVVVGEHNLNQNDGTEQYVGVQKIVVH
PYWNTDDVAAGYDIALLRLAQSVTLNSYVQLGVLPRAGTILANNSPCYITGWGLTRTNGQLAQTLQQAYLPTVDYAICSS
SSYWGSTVKNSMVCAGGDGVRSGCQGDSGGPLHCLVNGQYAVHGVTSFVSRLGCNVTRKPTVFTRVSAYISWINNVIASN

sodium acetate, sodium citrate, calcium chloride, pH 5.1, VAPOR DIFFUSION, HANGING DROP, temperature 293K

chymotrypsin-fold, beta-barrel, calcium binding, chloride binding, acetate binding, HYDROLASE