Hypothetical 92.3-kD human protein homologous to angiotensin-converting enzyme: a new member of the zinc metalloprotease family?

Significant identity between a hypothetical 92.3-kD human protein and angiotensin-converting enzyme (ACE; peptidyl-dipeptidase A; kininase II) has been found. Certain specific regions of the 92.3-kD protein indicate that this unidentified molecule may be a member of the zinc metalloprotease family. A method is suggested for determination of a structural and functional family of proteins with unknown structure and function.