Structure of Human Rack1 Protein at a Resolution of 2.45 A.
Ruiz Carrillo, D., Chandrasekaran, R., Nilsson, M., Cornvik, T., Liew, C.W., Tan, S.M., Lescar, J.(2012) Acta Crystallogr Sect F Struct Biol Cryst Commun 68: 867
- PubMed: 22869111 
- DOI: https://doi.org/10.1107/S1744309112027480
- Primary Citation of Related Structures:  
4AOW - PubMed Abstract: 
The crystal structure of human receptor for activated C-kinase 1 (hRack1) protein is reported at 2.45 Å resolution. The crystals belongs to space group P4(1)2(1)2, with three molecules per asymmetric unit. The hRack1 structure features a sevenfold β-propeller, with each blade housing a sequence motif that contains a strictly conserved Trp, the indole group of which is embedded between adjacent blades. In blades 1-5 the imidazole group of a His residue is wedged between the side chains of a Ser residue and an Asp residue through two hydrogen bonds. The hRack1 crystal structure forms a starting basis for understanding the remarkable scaffolding properties of this protein.
Organizational Affiliation: 
School of Biological Sciences, Nanyang Technological University, Singapore.