| Literature DB >> 1637323 |
Abstract
In this paper we describe a simple, fast, one-step method for the purification of the skeletal-muscle ryanodine receptor. The ryanodine receptor from CHAPS-solubilized junctional sarcoplasmic-reticulum membranes was adsorbed to a spermine-agarose column and eluted by 2 mM-spermine. The purified receptor, consisting predominantly of a 450 kDa polypeptide on SDS/PAGE, binds [3H]ryanodine with a specific activity of approximately 300 pmol/mg of protein and with a high affinity (KD = 4.7 +/- 2 nM). The purified receptor appears to retain the pharmacological properties of the receptor in the original membranes. The purification resulted in over 80% recovery of the initial ryanodine-binding sites and about 30-96-fold purification. This simple and fast method is highly reproducible and suitable for purification of small as well as large quantities of ryanodine receptor.Entities:
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Year: 1992 PMID: 1637323 PMCID: PMC1132744 DOI: 10.1042/bj2850061
Source DB: PubMed Journal: Biochem J ISSN: 0264-6021 Impact factor: 3.857