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The binding of vanadate and fluorescein isothiocyanate to the Ca2+-transport ATPase of sarcoplasmic reticulum (EC was analyzed. Monovanadate binds to the Ca2+-transport ATPase at a single high affinity site (site 1), that is presumably related to the binding site for inorganic orthophosphate, and to one of the two sites for decavanadate. Binding of(More)
A series of 73 dibenzo[a,d]cycloalkenimines were synthesized and evaluated for their ability to displace (+)-10,11-dihydro-5-methyl-5H-dibenzo[a,d]cyclohepten-5,10-imine ([3H]-(+)-10) from its specific binding site on rat cortical membranes. A number of the more active compounds (Ki ranging from 0.006 to 0.21 microM) were evaluated for N-methyl-D-aspartate(More)
The binding of monovanadate and decavanadate anions to sarcoplasmic reticulum vesicles was measured by equilibrium sedimentation. The affinity of vanadate binding and the molar amount of vanadium (V) bound at equilibrium is much greater with decavanadate than with monovanadate. The binding data can be rationalized in terms of one binding site per ATPase(More)
L-653,328 is the acetate ester of L-652,698 ((S)-3-tert-butylamino-1-[4-[2(hydroxy)ethyl]phenoxy]2-propanol). The penetration of L-652,698 into the albino rabbit eye was enhanced when the compound was instilled as its prodrug acetate ester. The instillation (one drop of 50 microliter) of 0.01, 0.05 and 0.1% solutions of L-653,328 significantly decreased in(More)
The influence of chemical modification on the morphology of crystalline ATPase aggregates was analyzed in sarcoplasmic reticulum (SR) vesicles. The Ca2+-ATPase forms monomer-type (P1) type crystals in the E1 and dimer-type (P2) crystals in the E2 conformation. The P1 type crystals are induced by Ca2+ or lanthanides; P2 type crystals are observed in(More)
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