Michael H. Engel

4-Norleucine, 7-D-phenylalanine-alpha-melanocyte-stimulating hormone: a highly potent alpha-melanotropin with ultralong biological activity.

Tomi K. Sawyer, Pauline J. Sanfilippo, Victor J. Hruby et al. · Proceedings of the National Academy of Sciences · 1980 · 576 citations · Full text

Frog Skin Bioassay, Biochemistry, Endocrine Mechanism +11

Isotopic evidence for extraterrestrial non- racemic amino acids in the Murchison meteorite

Michael H. Engel, Stephen A. Macko · Nature · 1997 · 487 citations

Isotope Geochemistry, Astrochemistry, Isotopic Evidence +3

The crystal structure of dipeptidyl peptidase IV (CD26) reveals its functional regulation and enzymatic mechanism

Michael H. Engel, Torsten Hoffmann, Leona Wagner et al. · Proceedings of the National Academy of Sciences · 2003 · 304 citations · Full text

Perspectives in Amino Acid and Protein Geochemistry

Michael H. Engel, Warren H. Miller · Organic Geochemistry · 2001 · 296 citations

Protein Chemistry, Amino Acid, Biochemistry

Carbon isotope composition of individual amino acids in the Murchison meteorite

Michael H. Engel, Stephen A. Macko, J.A. Silfer · Nature · 1990 · 273 citations

Isotope Analysis, Organic Geochemistry, Engineering +9