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Mitochondrial matrix proteins have a target sequence, called presequence located at __________

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Mitochondrial matrix proteins have a target sequence, called presequence located at __________

(a) N-terminus

(b) C-terminus

(c) interstitial site

(d) center of the sequence

This question was addressed to me in final exam.

This is a very interesting question from Cytoplasmic Membrane Systems in chapter Cytoplasmic Membrane Systems of Cell Biology

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The correct option is (a) N-terminus

Explanation: Mitochondrial matrix proteins contain a removable sequence (presequence) containing a number of positively charged residues, located at the N-terminus.

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