ISSN:
0886-1544
Keywords:
rhodamine phalloidin
;
anti-chicken actin antibody
;
plant actin
;
DNase I
;
Life and Medical Sciences
;
Cell & Developmental Biology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
,
Medicine
Notes:
Previous reports about phalloidin binding to plant actins have been indirect. We present here evidence showing that phalloidin does bind and stabilize filaments of actin extracted from pea roots. Criteria for the presence of actin included stabilization as a polymer in the presence of phalloidin, cross-reaction with antibody against chicken actin, affinity binding to DNase I, and ability to be decorated by the S1 fragment of rabbit muscle myosin.Phalloidin was able to stabilize polymers in pea root extracts against dissociation during SDS gel electrophoresis, and these polymers were shown to be composed exclusively of actin. Pea root actin isolated by affinity chromatography on a DNase I column was incubated with rhodamine phalloidin and electrophoresed on a native gel. The rhodamine fluorescence remained with the stabilized filaments, indicating clearly that phalloidin does bind to actin from a plant source. © 1992 Wiley-Liss, Inc.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cm.970220404
