1MN3

Cue domain of yeast Vps9p

Summary for 1MN3

• Entry DOI: 10.2210/pdb1mn3/pdb
• Descriptor: Vacuolar protein sorting-associated protein VPS9 (2 entities in total)
• Functional Keywords: ubiquitin, protein transport
• Biological source: Saccharomyces cerevisiae (baker's yeast)
• Cellular location: Cytoplasm: P54787
• Total number of polymer chains: 1
• Total formula weight: 6222.83

Authors

Prag, G.,Misra, S.,Jones, E.,Ghirlando, R.,Davies, B.A.,Horazdovsky, B.F.,Hurley, J.H. (deposition date: 2002-09-04, release date: 2003-06-10, Last modification date: 2024-11-06)

Primary citation

Prag, G.,Misra, S.,Jones, E.A.,Ghirlando, R.,Davies, B.A.,Horazdovsky, B.F.,Hurley, J.H.
Mechanism of Ubiquitin Recognition by the CUE Domain of Vps9p
Cell(Cambridge,Mass.), 113:609-620, 2003

PubMed Abstract: Coupling of ubiquitin conjugation to ER degradation (CUE) domains are approximately 50 amino acid monoubiquitin binding motifs found in proteins of trafficking and ubiquitination pathways. The 2.3 A structure of the Vps9p-CUE domain is a dimeric domain-swapped variant of the ubiquitin binding UBA domain. The 1.7 A structure of the CUE:ubiquitin complex shows that one CUE dimer binds one ubiquitin molecule. The bound CUE dimer is kinked relative to the unbound CUE dimer and wraps around ubiquitin. The CUE monomer contains two ubiquitin binding surfaces on opposite faces of the molecule that cannot bind simultaneously to a single ubiquitin molecule. Dimerization of the CUE domain allows both surfaces to contact a single ubiquitin molecule, providing a mechanism for high-affinity binding to monoubiquitin.

PubMed: 12787502
DOI: 10.1016/S0092-8674(03)00364-7

Experimental method

X-RAY DIFFRACTION (2.3 Å)