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Biomol NMR Assign. 2014 Oct;8(2):379-82. doi: 10.1007/s12104-013-9522-2. Epub 2013 Aug 22.

Backbone and side-chain ¹H, ¹⁵N, and ¹³C resonance assignments of the microtubule-binding domain of yeast cytoplasmic dynein in the high and low-affinity states.

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  • 1Graduated School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.

Abstract

Cytoplasmic dynein is a motor protein that walks toward the minus end of microtubules (MTs) by utilizing the energy of ATP hydrolysis. The heavy chain of cytoplasmic dynein contains the microtubule-binding domain (MTBD). Switching of MTBD between high and low affinity states for MTs is crucial for processive movement of cytoplasmic dynein. Previous biochemical studies demonstrated that the affinity of MTBD is regulated by the AAA+ family ATPase domain, which is separated by 15 nm long coiled-coil helix. In order to elucidate the structural basis of the affinity switching mechanism of MTBD, we designed two MTBD constructs, termed MTBD-High and MTBD-Low, which are locked in high and low affinity state for MTs, respectively, by introducing a disulfide bond between the coiled-coil helix. Here, we established the backbone and side-chain assignments of MTBD-High and MTBD-Low for further structural analyses.

PMID:
23975349
DOI:
10.1007/s12104-013-9522-2
[PubMed - indexed for MEDLINE]
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