Week 9 - Definitions

Key Terms:

• Matrix Processing Peptidase (MPP)
• Guidance Complex in Chloroplasts
• Tim9-Tim10 Complex

Dictionary

Matrix Processing Peptidase (MPP) - An enzyme in the matrix of mitochondria that cleaves signal sequences at the N terminal from the majority of mitochondrial proteins and deliver preproteins to the mitochondria. 

Guidance Complex - Protein complex that is the initial recognition site of transit peptides and directs them to the TOC complex in chloroplasts 

Tim9-Tim10 Complex - Complex of Tim chaperones that aid in the transport of hydrophobic precursor proteins across the intermembrane space in mitochondria. 

http://jcs.biologists.org/content/joces/120/23/4099/F6.large.jpg