title: On certain homologies between proteins.
abstract: Using, in part, comparisons between reconstructed ancestral sequences, homologies are suggested between certain proteins. Genetically related groups seem to be: 1. pancreatic and bacterial nucleases, 2. lysozymes and subtilisins, 3. c type cytochromes, ferredoxins and rubredoxins, 4. b type cytochromes, myoglobins and hemoglobins, catalase, and glutamic dehydrogenase. These homologies suggest that a given ancestral sequence can evolve into quite different tertiary structures.
mesh_terms: D000595:Amino Acid Sequence; D001426:Bacterial Proteins; D005075:Biological Evolution; D003580:Cytochromes; D005288:Ferredoxins; D011487:Protein Conformation
chemical_list: D001426:Bacterial Proteins; D003580:Cytochromes; D005288:Ferredoxins