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Title: RING E3 mechanism for ubiquitin ligation to a disordered substrate visualized for human anaphase-promoting complex

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
 [1];  [2];  [3];  [4];  [1];  [1];  [4];  [1];  [5];  [1];  [6];  [7];  [6];  [4];  [5];  [8]
  1. St. Jude Children's Research Hospital, Memphis, TN (United States). Dept. of Structural Biology
  2. St. Jude Children's Research Hospital, Memphis, TN (United States). Dept. of Structural Biology. Howard Hughes Medical Inst.
  3. St. Jude Children's Research Hospital, Memphis, TN (United States). Dept. of Structural Biology; Univ. of Tennessee Health Sciences Center, Memphis, TN (United States). Dept. of Microbiology, Immunology, and Biochemistry
  4. Vienna Biocenter (VBC) (Austria). Research Inst. of Molecular Pathology (IMP)
  5. Max Planck Inst. for Biophysical Chemistry, Gottingen (Germany); Univ. of Gottingen (Germany). Dept. of 3D Electron Cryomicroscopy. Inst. of Microbiology and Genetics
  6. St. Jude Children's Research Hospital, Memphis, TN (United States). Dept. of Chemical Biology and Therapeutics
  7. St. Jude Children's Research Hospital, Memphis, TN (United States). Hartwell Center for Bioinformatics and Biotechnology
  8. St. Jude Children's Research Hospital, Memphis, TN (United States). Dept. of Structural Biology. Howard Hughes Medical Inst.; Univ. of Tennessee Health Sciences Center, Memphis, TN (United States). Dept. of Microbiology, Immunology, and Biochemistry

For many E3 ligases, a mobile RING (Really Interesting New Gene) domain stimulates ubiquitin (Ub) transfer from a thioester-linked E2~Ub intermediate to a lysine on a remotely bound disordered substrate. One such E3 is the gigantic, multisubunit 1.2-MDa anaphase-promoting complex/cyclosome (APC), which controls cell division by ubiquitinating cell cycle regulators to drive their timely degradation. Intrinsically disordered substrates are typically recruited via their KEN-box, D-box, and/or other motifs binding to APC and a coactivator such as CDH1. On the opposite side of the APC, the dynamic catalytic core contains the cullin-like subunit APC2 and its RING partner APC11, which collaborates with the E2 UBCH10 (UBE2C) to ubiquitinate substrates. However, how dynamic RING–E2~Ub catalytic modules such as APC11–UBCH10~Ub collide with distally tethered disordered substrates remains poorly understood. In this paper, we report structural mechanisms of UBCH10 recruitment to APCCDH1 and substrate ubiquitination. Unexpectedly, in addition to binding APC11’s RING, UBCH10 is corecruited via interactions with APC2, which we visualized in a trapped complex representing an APCCDH1–UBCH10~Ub–substrate intermediate by cryo-electron microscopy, and in isolation by X-ray crystallography. To our knowledge, this is the first structural view of APC, or any cullin–RING E3, with E2 and substrate juxtaposed, and it reveals how tripartite cullin–RING–E2 interactions establish APC’s specificity for UBCH10 and harness a flexible catalytic module to drive ubiquitination of lysines within an accessible zone. Finally, we propose that multisite interactions reduce the degrees of freedom available to dynamic RING E3–E2~Ub catalytic modules, condense the search radius for target lysines, increase the chance of active-site collision with conformationally fluctuating substrates, and enable regulation.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); St. Jude Children's Research Hospital, Memphis, TN (United States); Vienna Biocenter (VBC) (Austria); Max Planck Inst. for Biophysical Chemistry, Gottingen (Germany); Univ. of Goettingen (Germany)
Sponsoring Organization:
USDOE Office of Science (SC); National Inst. of Health (NIH) (United States); Jane Coffin Childs Foundation (United States); American Cancer Society (United States); American Lebanese Syrian Associated Charities (ALSAC) (United States); Howard Hughes Medical Inst. (United States); Japan Society for the Promotion of Science (Japan); Boehringer Ingelheim (Germany); Laura Bassi Centre for Optimized Structural Studies (Austria); European Union (Belgium); Austrian Research Fund (Austria); German Research Foundation (DFG)
Grant/Contract Number:
AC02-06CH11357; R37GM065930; P30CA021765; P41 GM103403; RSG CDD-120969; 227764 MitoSys; Sonderforschungsbereich 860
OSTI ID:
1197027
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Vol. 112, Issue 17; ISSN 0027-8424
Publisher:
National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 68 works
Citation information provided by
Web of Science

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Cited By (25)

Specific targeting of the deubiquitinase and E3 ligase families with engineered ubiquitin variants: Gorelik and Sidhu journal November 2016
Detection and Analysis of Cell Cycle-Associated APC/C-Mediated Cellular Ubiquitylation In Vitro and In Vivo book September 2016
E2 enzymes: more than just middle men journal March 2016
The increasing complexity of the ubiquitin code journal May 2016
Structural insights into the catalysis and regulation of E3 ubiquitin ligases journal August 2016
Mechanisms and functions of ribosome-associated protein quality control journal April 2019
biGBac enables rapid gene assembly for the expression of large multisubunit protein complexes journal April 2016
Design Principles Involving Protein Disorder Facilitate Specific Substrate Selection and Degradation by the Ubiquitin-Proteasome System journal February 2016
RETRACTED ARTICLE: Role of oxidative stress in Retinitis pigmentosa: new involved pathways by an RNA-Seq analysis journal December 2018
Insights into APC/C: from cellular function to diseases and therapeutics journal March 2016
Mechanisms for the temporal regulation of substrate ubiquitination by the anaphase-promoting complex/cyclosome journal December 2019
Cezanne/ OTUD 7B is a cell cycle‐regulated deubiquitinase that antagonizes the degradation of APC /C substrates journal July 2018
Enzymatic Logic of Ubiquitin Chain Assembly journal July 2019
Sumoylation promotes optimal APC/C activation and timely anaphase journal March 2018
Molecular basis of APC/C regulation by the spindle assembly checkpoint journal August 2016
Mechanism of APC/C CDC20 activation by mitotic phosphorylation journal April 2016
Visualizing the complex functions and mechanisms of the anaphase promoting complex/cyclosome (APC/C) journal November 2017
Quantifying the heterogeneity of macromolecular machines by mass photometry journal April 2020
Atomic-Resolution Structures of the APC/C Subunits Apc4 and the Apc5 N-Terminal Domain journal October 2015
Structural Basis of BRCC36 Function in DNA Repair and Immune Regulation journal August 2019
Ubiquitin-like Protein Conjugation: Structures, Chemistry, and Mechanism journal February 2017
Specificity and disease in the ubiquitin system journal February 2016
Synergistic inhibition of the APC/C by the removal of APC15 in HCT116 cells lacking UBE2C journal September 2016
Dual RING E3 Architectures Regulate Multiubiquitination and Ubiquitin Chain Elongation by APC/C text January 2016
The mitotic checkpoint complex (MCC): looking back and forth after 15 years journal January 2016

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