Structural studies of the yeast DNA damage-inducible protein Ddi1 reveal domain architecture of this eukaryotic protein family
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Structural studies of the yeast DNA damage-inducible protein Ddi1 reveal domain architecture of this eukaryotic protein family. / Trempe, Jean-François; Šašková, Klára Grantz; Sivá, Monika; Ratcliffe, Colin D H; Veverka, Václav; Hoegl, Annabelle; Ménade, Marie; Feng, Xin; Shenker, Solomon; Svoboda, Michal; Kožíšek, Milan; Konvalinka, Jan; Gehring, Kalle.
In: Scientific Reports, Vol. 6, 20.09.2016, p. 33671.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Structural studies of the yeast DNA damage-inducible protein Ddi1 reveal domain architecture of this eukaryotic protein family
AU - Trempe, Jean-François
AU - Šašková, Klára Grantz
AU - Sivá, Monika
AU - Ratcliffe, Colin D H
AU - Veverka, Václav
AU - Hoegl, Annabelle
AU - Ménade, Marie
AU - Feng, Xin
AU - Shenker, Solomon
AU - Svoboda, Michal
AU - Kožíšek, Milan
AU - Konvalinka, Jan
AU - Gehring, Kalle
PY - 2016/9/20
Y1 - 2016/9/20
N2 - The eukaryotic Ddi1 family is defined by a conserved retroviral aspartyl protease-like (RVP) domain found in association with a ubiquitin-like (UBL) domain. Ddi1 from Saccharomyces cerevisiae additionally contains a ubiquitin-associated (UBA) domain. The substrate specificity and role of the protease domain in the biological functions of the Ddi family remain unclear. Yeast Ddi1 has been implicated in the regulation of cell cycle progression, DNA-damage repair, and exocytosis. Here, we investigated the multi-domain structure of yeast Ddi1 using X-ray crystallography, nuclear magnetic resonance, and small-angle X-ray scattering. The crystal structure of the RVP domain sheds light on a putative substrate recognition site involving a conserved loop. Isothermal titration calorimetry confirms that both UBL and UBA domains bind ubiquitin, and that Ddi1 binds K48-linked diubiquitin with enhanced affinity. The solution NMR structure of a helical domain that precedes the protease displays tertiary structure similarity to DNA-binding domains from transcription regulators. Our structural studies suggest that the helical domain could serve as a landing platform for substrates in conjunction with attached ubiquitin chains binding to the UBL and UBA domains.
AB - The eukaryotic Ddi1 family is defined by a conserved retroviral aspartyl protease-like (RVP) domain found in association with a ubiquitin-like (UBL) domain. Ddi1 from Saccharomyces cerevisiae additionally contains a ubiquitin-associated (UBA) domain. The substrate specificity and role of the protease domain in the biological functions of the Ddi family remain unclear. Yeast Ddi1 has been implicated in the regulation of cell cycle progression, DNA-damage repair, and exocytosis. Here, we investigated the multi-domain structure of yeast Ddi1 using X-ray crystallography, nuclear magnetic resonance, and small-angle X-ray scattering. The crystal structure of the RVP domain sheds light on a putative substrate recognition site involving a conserved loop. Isothermal titration calorimetry confirms that both UBL and UBA domains bind ubiquitin, and that Ddi1 binds K48-linked diubiquitin with enhanced affinity. The solution NMR structure of a helical domain that precedes the protease displays tertiary structure similarity to DNA-binding domains from transcription regulators. Our structural studies suggest that the helical domain could serve as a landing platform for substrates in conjunction with attached ubiquitin chains binding to the UBL and UBA domains.
KW - Amino Acid Sequence
KW - Binding Sites
KW - Catalytic Domain
KW - Crystallography, X-Ray
KW - DNA Damage
KW - Models, Molecular
KW - Multigene Family
KW - Protein Binding
KW - Protein Conformation
KW - Protein Interaction Domains and Motifs
KW - Proteomics/methods
KW - Saccharomyces cerevisiae/genetics
KW - Saccharomyces cerevisiae Proteins/chemistry
KW - Substrate Specificity
KW - Ubiquitin/metabolism
U2 - 10.1038/srep33671
DO - 10.1038/srep33671
M3 - Journal article
C2 - 27646017
VL - 6
SP - 33671
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
ER -
ID: 209575382