has subject area Animals Biochemical Phenomena - Amino Acid Sequence Diagnostic Imaging - Cryoelectron Microscopy Endopeptidases - Trypsin Genetic Structures - Nucleic Acid Conformation Investigative Techniques - Cryoelectron Microscopy Measles virus Molecular Conformation - Nucleic Acid Conformation Molecular Sequence Data - Amino Acid Sequence Nucleoproteins RNA, Viral Recombinant Proteins Recombination, Genetic Serine Proteases - Trypsin Spodoptera