Inhibitory Diffusible Factor 45 Bifunctional Activity

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Inhibitory diffusible factor 45 bifunctional activity. As a cell growth inhibitor and as an insulin-like growth factor I-binding protein.

From medium conditioned by 3T3 cells, we had previously purified to apparent homogeneity a novel inhibitory diffusible factor of 45 kDa (IDF45), and then determined the amino-terminal sequence. IDF45 prevented reversibly the growth of chick embryo fibroblast (CEF). In these cells, DNA synthesis stimulated by 1% serum was 50% inhibited in the presence of 45 ng/ml (1 nM) IDF45. In the present art...

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ژورنال

عنوان ژورنال: Journal of Biological Chemistry

سال: 1989

ISSN: 0021-9258

DOI: 10.1016/s0021-9258(18)63879-7