Flagellasialin: a novel sulfated 2,9-linked polysialic acid glycoprotein of sea urchin sperm flagella
نویسندگان
چکیده
منابع مشابه
Movement of sea urchin sperm flagella
The motion of the sea urchin sperm flagellum was analyzed from high-speed cinemicrographs. At all locations on the flagellum the transversal motion and the curvature were found to vary sinusoidally in time. The curvatures of the flagella increase strongly near the proximal junction. Two sperm are described in transient from rest to normal motion. The full wave motion developed in both sperm wit...
متن کاملStarting transients in sea urchin sperm flagella
Live sea urchin spermatozoa were rendered immotile by lowered pH; Triton-extracted spermatozoa were rendered immotile by either lowered pH or by deprivation of ATP. The spermatozoa began to beat after an increase in pH or as ATP was supplied, and the first bends were recorded on ciné film. Triton-extracted spermatozoa deprived of ATP retained a partially formed basal bend which could be either ...
متن کاملInhibition and relaxation of sea urchin sperm flagella by vanadate
Direct measurements of the stiffness (elastic bending resistance) of demembranated sera urchin sperm flagella were made in the presence of MgATP2- and vanadate. Under these conditions, the flagellum is in a relaxed state, with a stiffness of approximately 0.9 x 10(-21) N m2, which is approximately 5% of the stiffness obtained in the rigor state in the absence of MgATP2-. MgADP- dose not substit...
متن کاملMotility of basal fragments of sea urchin sperm flagella.
Both live and reactivated sea urchin sperm flagella were broken by passage through a pipette. Distal fragments stopped, but basal fragments continued to beat. Intact flagella were about 48 micrometer long; basal fragments were about 4-20 micrometer long. Beat periods of tritonated fragments were 11% shorter than those of unbroken controls, possibly reflecting decreased viscous loading; beat per...
متن کاملA latent adenosine triphosphatase form of dynein 1 from sea urchin sperm flagella.
Treatment of demembranated sea urchin sperm axonemes with an extraction solution containing 0.6 M NaCl, pH 7.0 for 10 min at 4 degrees C yields a solution of dynein 1 having a low, latent specific ATPase activity of about 0.25 mumol of Pi mg(-1) min(-1). Exposure of this dynein solution to 0.1% Triton-X-100 for 10 min at 25 degrees C causes an increase in its ATPase activity to about 3 mumol of...
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ژورنال
عنوان ژورنال: Glycobiology
سال: 2006
ISSN: 0959-6658,1460-2423
DOI: 10.1093/glycob/cwl036