title: The dynein electrophoretic bands in axonemes naturally lacking the inner or the outer arm.
abstract: Two unconventional sperm models (all motile) have been studied. The first one has only the outer arm on the doublets (the gall midge, Diplolaboncus); the second one, has only a well-developed inner arm (the eel, Anguilla). Both are devoid of central tubules and radial spokes. The gall midge sperm yields a single electrophoretic band migrating similarly to the sea urchin dynein band A; a major high-molecular-weight band is obtained from eel sperm which co-migrates with the sea urchin dynein band B. The present picture is consistent with the localization of dynein in the axoneme--namely, of an A-like band in the outer arm, and of the B band in the inner arm. Moreover, the D band is present only in the eel, where gamma-links are present. ATPase activity was localized histochemically and found to be associated with both inner and outer arms, as well as with the gamma-links.
mesh_terms: D000251:Adenosine Triphosphatases / Q000032:analysis*; D000811:Anguilla / Q000033:anatomy & histology*; D000818:Animals; D004175:Diptera / Q000033:anatomy & histology*; D004398:Dyneins / Q000032:analysis*; D004591:Electrophoresis, Polyacrylamide Gel; D008297:Male; D010455:Peptides / Q000032:analysis; D013045:Species Specificity; D013082:Sperm Tail / Q000648:ultrastructure*; D013094:Spermatozoa / Q000648:ultrastructure*
chemical_list: D010455:Peptides; D000251:Adenosine Triphosphatases; D004398:Dyneins