title: Protein of insect sperm mitochondrial crystals. Crystallomitin.
abstract: Mitochondrial derivatives of insect sperm usually contain a crystalline protein that shows a 45-nm main period, made up of 20-nm subperiods, determined by the coiling of filament bundles. Filaments are 2 nm thick and have a globular appearance. The crystals contain two main polypeptides, 52,000 and 55,000 daltons. These polypeptides are closely related, contain a high percentage of proline, and are insoluble in sodium dodecyl sulfate due to disulfide cross links. We suggest for this class of protein the name crystallomitin.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000818:Animals; D003461:Crystallography; D007313:Insecta / Q000648:ultrastructure*; D008297:Male; D008928:Mitochondria / Q000737:chemistry; D008970:Molecular Weight; D010455:Peptides / Q000032:analysis; D011392:Proline / Q000032:analysis; D011506:Proteins / Q000032:analysis; D013082:Sperm Tail / Q000648:ultrastructure; D013094:Spermatozoa / Q000648:ultrastructure*; D009626:Terminology as Topic
chemical_list: D000596:Amino Acids; D010455:Peptides; D011506:Proteins; D011392:Proline