>1KUI_2|Chain B|EQW|null QQW >1KUI_1|Chain A|metalloproteinase|Protobothrops mucrosquamatus (103944) EQQRFPQRYIELAIVVDHGMYTKYSSNFKKIRKRVHQMVSNINEMCRPLNIAITLALLDVWSEKDFITVQADAPTTAGLFGDWRERVLLKKKNHDHAQLLTDTNFARNTIGWAYVGRMCDEKYSVAVVKDHSSKVFMVAVTMTHELGHNLGMEHDDKDKCKCDTCIMSAVISDKQSKLFSDCSKDYYQTFLTNDNPQCILNAP