Crystallographic measurements and the structure of protein molecules as they are.
D002627:Chemistry, Physical / Q000266:history; D049673:History, 20th Century; D008958:Models, Molecular; D011487:Protein Conformation; D011506:Proteins / Q000266:history*; D014961:X-Ray Diffraction; D014965:X-Rays
D011506:Proteins