期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1986
卷号：83
期号：24
页码：9502-9506
DOI：10.1073/pnas.83.24.9502
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Microinjection of muscle 6-phosphofructokinase (PFK; EC 2.7.1.11 ) into tissue culture cells led to a reversible disintegration of microfilament bundles (stress fibers). The mode of disruption as well as of recovery of stress fibers was very similar to that found previously in experiments performed with the actin-severing protein brevin, an extracellular variant of gelsolin. PFK, like brevin, was also capable of disrupting stress fibers in detergent-extracted cells and in ethanol-fixed cells, in a Ca2+-dependent manner. When compared with heart muscle gelsolin, PFK comigrated with the 85- to 90-kDa band. Antibodies against PFK crossreacted with gelsolin from the same species. These results point to a tight association between polypeptides with similar biochemical and immunological parameters present in both preparations. They suggest hitherto unexpected cellular control mechanisms for both microfilament functions and glycolysis.
