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Import of proteins into mitochondria. The precursor of cytochrome c1 is processed in two steps, one of them heme-dependent.
Open accessAbstract
The apoprotein of yeast cytochrome c1 is made outside the mitochondria as a larger precursor which is then processed in at least two steps. In the first step, it is transported across both mitochondrial membranes and converted by a matrix-localized protease to an intermediate form whose molecular weight is between that of the precursor and the mature form. The intermediate form is bound to the outer face of the inner membrane. This first step requires an energized mitochondrial inner membrane, but no heme. In the second step, the intermediate form is converted to the mature cytochrome. This second step requires heme; it is blocked in a heme-deficient mutant or in wild type cells treated with an inhibitor of heme synthesis. Import of cytochrome c1 into mitochondria thus proceeds via two distinct heme-free precursors and at least two maturation steps, one of them dependent on heme.
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Cited by
Glick, B. S., Brandt, A., Cunningham, K., Müller, S., Hallberg, R. L., & Schatz, G. (1992) · Cell · doi:10.1016/0092-8674(92)90292-k · Cited by 423
Self-citationGasser, S. M., Daum, G., & Schatz, G. (1982) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(18)33618-4 · Cited by 347
Self-citationTy element transposition: Reverse transcriptase and virus-like particles
Garfinkel, D. J., Boeke, J. D., & Fink, G. R. (1985) · Cell · doi:10.1016/0092-8674(85)90108-4 · Cited by 340
Hartl, F.-U., Schmidt, B., Wachter, E., Weiss, H., & Neupert, W. (1986) · Cell · doi:10.1016/0092-8674(86)90809-3 · Cited by 334
Hurt, E. C., Pesold-Hurt, B., Suda, K., Oppliger, W., & Schatz, G. (1985) · The EMBO Journal · doi:10.1002/j.1460-2075.1985.tb03892.x · Cited by 279
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Metadata
- Authors
- Ohashi, A., Gibson, J., Gregor, I., & Schatz, G.
- Venue
- Journal of Biological Chemistry
- Publisher
- Elsevier BV
- Published
- 1982-11
- Volume
- 257
- Issue
- 21
- Pages
- 13042-13047
- ISSN
- 0021-9258 (ISSN-L)
- OpenAlex
- W1573917001
- Cited by
- 250
- References
- 0
- FWCI
- 8.51
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- CoChat. (2026). Citation check: Import of proteins into mitochondria. The precursor of cytochrome c1 is processed in two steps, one of them heme-dependent. https://app.cochat.ai/papers/10.1016/s0021-9258(18)33619-6
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- Ohashi, A., Gibson, J., Gregor, I., & Schatz, G. (1982). Import of proteins into mitochondria. The precursor of cytochrome c1 is processed in two steps, one of them heme-dependent. Journal of Biological Chemistry. https://doi.org/10.1016/s0021-9258(18)33619-6
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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