>1KUG_2|Chain B|ENW|null QNW >1KUG_1|Chain A|metalloproteinase|Protobothrops mucrosquamatus (103944) EQQRFPQRYIELAIVVDHGMYTKYSSNFKKIRKRVHQMVSNINEMCRPLNIAITLALLDVWSEKDFITVQADAPTTAGLFGDWRERVLLKKKNHDHAQLLTDTNFARNTIGWAYVGRMCDEKYSVAVVKDHSSKVFMVAVTMTHELGHNLGMEHDDKDKCKCTTCIMSAVISDKQSKLFSDCSKDYYQTFLTNDNPQCILNAP