|
||
The Journal of Cell Biology, Vol 111, Issue 6 2353-2363, Copyright © 1990 by The Rockefeller University Press
ARTICLES |
HF Steger, T Sollner, M Kiebler, KA Dietmeier, R Pfaller, KS Trulzsch, M Tropschug, W Neupert and N Pfanner
Institut fur Physiologische Chemie, Universitat Munchen, Federal Republic of Germany.
We have identified the yeast homologue of Neurospora crassa MOM72, the mitochondrial import receptor for the ADP/ATP carrier (AAC), by functional studies and by cDNA sequencing. Mitochondria of a yeast mutant in which the gene for MOM72 was disrupted were impaired in specific binding and import of AAC. Unexpectedly, we found a residual, yet significant import of AAC into mitochondria lacking MOM72 that occurred via the receptor MOM19. We conclude that both MOM72 and MOM19 can direct AAC into mitochondria, albeit with different efficiency. Moreover, the precursor of MOM72 apparently does not require a positively charged sequence at the extreme amino terminus for targeting to mitochondria.
This article has been cited by other articles:
|
|