Purification and characterization of a processing protease from rat liver mitochondria

A processing protease has been purified from the matrix fraction of rat liver mitochondria. The purified protease contained two protein subunits of 55 kd (P‐55) and 52 kd (P‐52) as determined by SDS‐PAGE. The processing protease was estimated to be 105 kd in gel filtration, indicating that the two p...

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