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How proteins talk to each other
Date:9/21/2009

hich cleaved substrates are tagged at an exposed edge (N-terminal) and analyzed though mass spectrometry. The data from these assays were then matched against lists of substrates in the Protein Data Bank. Notably, caspase-3 did not cleave E. coli proteins as effectively as it did human proteins. However, when hybrid human/E. coli proteins were constructed, cleavage was greatly improved, leading researchers to conclude that caspase-3 co-evolved with its human substrates.

Because they alter the functions of other proteins, proteases like caspase-3 are critical to cell signaling. Understanding how and where they interface with target proteins enhances our ability to understand the progress of diseases.


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Contact: Josh Baxt
jbaxt@burnham.org
858-795-5236
Burnham Institute
Source:Eurekalert

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