trans

Introduction

In general:

• across or opposite

In chemistry:

• in reference to functional groups on the opposite side of a plane that includes two covalently bonded carbon atoms

In biochemistry:

• a prefix to a group name in the name of an enzyme or enzymatic reaction denoting transfer of that group from one molecule to another, i.e. transaminase (transfers an amine)

In genetics:

• in reference to genes on the opposite chromosome of a homologous pair