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Protein Pept Lett. 2007;14(3):265-8.

Cautionary tail: the presence of an N-terminal tag on dynein light-chain Roadblock/LC7 affects its interaction with a functional partner.

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Center for Eukaryotic Structural Genomics, Department of Biochemistry, University of Wisconsin-Madison, WI 53706-1544, USA.


As part of structural investigations of components of the molecular motor, dynein, we prepared the light chain, Robl1_mouse, with and without an N-terminal His-tag. We found that the His-tag introduced a spurious binding site for a second protein, IC74. We propose a molecular mechanism for functional interference by the His-tag.

[Indexed for MEDLINE]

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