Ammonium sulfate fractionation and assay of hormone receptors.

Abstract:

:Ammonium sulfate (AS) precipitation by consecutive steps at 10% to 50% saturation has been utilized for fractionation of cytoplasmic estrogen receptor (ER) and progesterone receptor (PgR). The highest percentage of both receptor activities are confined mainly in two fractions at AS saturation from 20% to 30% and 30% to 40%. The total percentages of activity of the cytoplasmic ER and PgR salted out at 50% saturation are 77% and 53%, respectively. Precipitation of hormone-receptor complexes at 50% saturation for assay of ER and PgR can be achieved, but needs improvement for efficient salting out of the receptors. ER and PgR salted out in the AS pellet are much more stable for storage than in the cytosol.

journal_name

Cancer Invest

journal_title

Cancer investigation

authors

Chen YM,Vaughn CB

doi

10.3109/07357908909039842

subject

Has Abstract

pub_date

1989-01-01 00:00:00

pages

231-5

issue

3

eissn

0735-7907

issn

1532-4192

journal_volume

7

pub_type

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