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Interaction of [125I]β nerve growth factor with acidic proteins

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Abstract

We have demonstrated that the β nerve growth factor will interact with various acidic proteins apparently nonspecifically. When125I-labeled β nerve growth factor at a concentration of 3.8×10−10 M is incubated with an acidic protein at 2 mg/ml (4.5×10−6–4.4×10−5 M), a complex is formed. This complex changes the isoelectric point of the125I-labeled β nerve growth factor sufficiently so that the125I-labeled β nerve growth factor migrates anomalously in polyacrylamide gel electrophoresis. The interaction between β nerve growth factor and bovine serum albumin, which appears to be complex, may be the cause of the previously reported activation of the β nerve growth factor when bovine serum albumin is present in a typical bioassay.

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Rusenko, K.W., Stach, R.W. Interaction of [125I]β nerve growth factor with acidic proteins. Neurochem Res 6, 287–300 (1981). https://doi.org/10.1007/BF00964044

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