Development: Ubiquitin tag for sperm mitochondria

@article{Sutovsky1999DevelopmentUT,
  title={Development: Ubiquitin tag for sperm mitochondria},
  author={Peter Sutovsky and Ricardo D Moreno and Jo{\~a}o Ramalho‐Santos and Tanja Dominko and Calvin R. Simerly and Gerald Schatten},
  journal={Nature},
  year={1999},
  volume={402},
  pages={371-372}
}
Like other mammals, humans inherit mitochondria from the mother only, even though the sperm contributes nearly one hundred mitochondria to the fertilized egg. In support of the idea that this strictly maternal inheritance of mitochondrial DNA arises from the selective destruction of sperm mitochondria, we show here that sperm mitochondria inside fertilized cow and monkey eggs are tagged by the recycling marker protein ubiquitin. This imprint is a death sentence that is written during… 

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It is shown that autophagy, which delivers cytosolic components to lysosomes for degradation, is required for the elimination of paternal mitochondria in Caenorhabditis elegans and thereby maternal inheritance of mitochondrial DNA.

Autophagosomal Sperm Organelle Clearance and mtDNA Inheritance in C. elegans.

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Active digestion of sperm mitochondrial DNA in single living sperm revealed by optical tweezers

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