Cuéllar J, Martín-Benito J, Scheres SHW, Sousa R, Moro F, López-Viñas E, Gómez-Puertas P, Muga A, Carrascosa JL, Valpuesta JM. The structure of CCT–Hsc70NBD suggests a mechanism for Hsp70 delivery of substrates to the chaperonin. Nature Structural & Molecular Biology. 2008 Jul 27;15(8):858–64. doi: 10.1038/nsmb.1464.