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Resolution of the ATP-dependent proteolytic system from reticulocytes: a component that interacts with ATP.
Open accessAbstract
The ATP-dependent proteolytic cell-free system from reticulocytes has been resolved into three components, each of which is absolutely required for acid solubilization of 125I-labeled bovine serum albumin radioactivity. In addition to the previously reported heat-stable polypeptide [Ciechanover, A., Hod, Y. & Hershko, A. (1978) Biochem. Biophys. Res Commun. 81, 1100-1105], we now describe a protein of high molecular weight (approximately 450,000) that is labile at 42 degrees C. The extremely heat-labile factors is remarkably stabilized by ATP. GTP and CTP, which do not stimulate protolysis, do not stabilize this factor. Adenylate nucleotides such as ADP or the nonhydrolyzable beta,gamma imido or methylene analogues of ATP cause stabilization although they do not activate proteolysis. A third protein component of the protease system, stable at 42 degrees C, has been separated from the heat-labile species by salt precipitation. All three components are required with ATP for proteolytic activity, but thus far only the heat-labile factor has been shown to interact directly with ATP.
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Citations
Cited by
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Chen, Z. J. (2005) · Nature Cell Biology · doi:10.1038/ncb0805-758 · Cited by 1,184
Hershko, A., Heller, H., Elias, S., & Ciechanover, A. (1983) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(20)82050-x · Cited by 1,160
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Metadata
- Authors
- Hershko, A., Ciechanover, A., & Rose, I. A.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 1979-07
- Volume
- 76
- Issue
- 7
- Pages
- 3107-3110
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W1991276331
- Cited by
- 223
- References
- 0
- FWCI
- 3.92
- Type
- journal article
- Language
- en
- Open access
- green
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- Hershko, A., Ciechanover, A., & Rose, I. A. (1979). Resolution of the ATP-dependent proteolytic system from reticulocytes: a component that interacts with ATP. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.76.7.3107
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