Crystal structure of the N-terminal domain of human Timeless and its interaction with Tipin.
Holzer, S., Degliesposti, G., Kilkenny, M.L., Maslen, S.L., Matak-Vinkovic, D., Skehel, M., Pellegrini, L.(2017) Nucleic Acids Res 45: 5555-5563
- PubMed: 28334766
- DOI: https://doi.org/10.1093/nar/gkx139
- Primary Citation of Related Structures:
5MQI - PubMed Abstract:
Human Timeless is involved in replication fork stabilization, S-phase checkpoint activation and establishment of sister chromatid cohesion. In the cell, Timeless forms a constitutive heterodimeric complex with Tipin. Here we present the 1.85 Å crystal structure of a large N-terminal segment of human Timeless, spanning amino acids 1-463, and we show that this region of human Timeless harbours a partial binding site for Tipin. Furthermore, we identify minimal regions of the two proteins that are required for the formation of a stable Timeless-Tipin complex and provide evidence that the Timeless-Tipin interaction is based on a composite binding interface comprising different domains of Timeless.
Organizational Affiliation:
Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, UK.