>4J4M_1|Chains A, B|zinc-dependent metalloproteinase|Protobothrops mucrosquamatus (103944) QQRFPQRYVMLAIVADHGMVTKYSGNSSAITTRVHQMVSHVTEMYSPLNIATTLSLLRIWSSKDLITVQSDSSVTLGSFGDWRKVVLLSQQAHDCAFLNTATALDDSTIGLAYSNGMCDPKFSVGLVQDHSSNVFMVAVTMTHELGHNLGMAHDEAGGCACSSCIMSPAASSGPSKLFSDCSKDDYQTFLTNTNPQCILNAP