1459826626-c789a5bc-417e-40f5-aae6-6474ec82cfb1

Isolated nucleic acid molecules encoding human MEKK proteins, and isolated MEKK proteins, are provided. A locking protocol is performed that includes one or more explicit locking operations on objects in a first database of the database environment. The core tube is mounted longitudinally in the distal housing and has a distal tube and a proximal tube.