Activator of Ca2+-transport in the lens.

Abstract:

:It has been hypothesized that an activator of Ca-ATPase co-exists with Ca-ATPase in the mouse lens. Though the Ca-ATPase activity could be measured from mouse lens homogenate, its activity could not be determined in individual soluble and insoluble fractions. The Ca-ATPase activity, however, could be detected when an activator of this enzyme such as calmodulin was added to the lens insoluble fraction. This enzyme in the lens insoluble fraction was activated also by addition of soluble fraction. The Ca-ATPase in homogenate was inhibited by chlorpromazine and N-(6-amino-hexyl)-5-chloro-1-naphthalenesulfonamide (W-7), which are calmodulin antagonists. When the mouse lens was incubated with W-7, the degree of the lens opacification increased in relation to W-7 concentration.

journal_name

Curr Eye Res

journal_title

Current eye research

authors

Iwata S,Shirasawa E,Takehana M

doi

10.3109/02713688409065593

subject

Has Abstract

pub_date

1984-05-01 00:00:00

pages

717-21

issue

5

eissn

0271-3683

issn

1460-2202

journal_volume

3

pub_type

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