Abstract:
:Dynamin I is a large GTPase enzyme required in membrane constriction and fission during multiple forms of endocytosis. The first method described here is for the rapid purification of native dynamin from peripheral membrane extracts of sheep brain using ammonium sulfate precipitation and affinity purification on recombinant SH3 domains. The method greatly enriches for dynamin I at high purity and allows for large-scale biochemical and functional studies. The second method is a nonradioactive, high-throughput colorimetric GTPase assay for dynamin activity. The approach is based on terminating incubations with EDTA and the use of malachite green for high-sensitivity detection of inorganic phosphate release. The two methods will facilitate high-throughput screens for potential dynamin inhibitors or activators.
journal_name
Methods Enzymoljournal_title
Methods in enzymologyauthors
Quan A,Robinson PJdoi
10.1016/S0076-6879(05)04049-8subject
Has Abstractpub_date
2005-01-01 00:00:00pages
556-69eissn
0076-6879issn
1557-7988pii
S0076-6879(05)04049-8journal_volume
404pub_type
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