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FEBS Lett. 2004 Oct 22;576(3):358-62.

The SEP domain of p47 acts as a reversible competitive inhibitor of cathepsin L.

Author information

1
Forschungsinstitut für Molekulare Pharmakologie, Robert-Rössle Str. 10, D-13125 Berlin, Germany.

Abstract

The solution structure of the human p47 SEP domain in a construct comprising residues G1-S2-p47(171-270) was determined by NMR spectroscopy. A structure-derived hypothesis about the domains' function was formulated and pursued in binding experiments with cysteine proteases. The SEP domain was found to be a reversible competitive inhibitor of cathepsin L with a Ki of 1.5 microM. The binding of G1-S2-p47(171-270) to cathepsin L was mapped by biochemical assays and the binding interface was investigated by NMR chemical shift perturbation experiments.

PMID:
15498563
DOI:
10.1016/j.febslet.2004.09.037
[Indexed for MEDLINE]
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