1
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Tan W, Deans AJ. The ubiquitination machinery of the Fanconi Anemia DNA repair pathway. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2020; 163:5-13. [PMID: 33058944 DOI: 10.1016/j.pbiomolbio.2020.09.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/25/2020] [Accepted: 09/29/2020] [Indexed: 10/23/2022]
Abstract
The Fanconi Anemia (FA) pathway maintains genome stability by preventing DNA damage from occurring when replication is blocked. Central to the FA pathway is the monoubiquitination of FANCI-FANCD2 mediated by a ubiquitin RING-E3 ligase complex called the FA core complex. Genetic mutation in any component of the FA core complex results in defective FANCI-FANCD2 monoubiquitination and phenotypes of DNA damage sensitivity, birth defects, early-onset bone marrow failure and cancer. Here, we discuss the mechanisms of the FA core complex and FANCI-FANCD2 monoubiquitination at sites of blocked replication and review our current understanding of the biological functions of these proteins in replication fork protection.
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Affiliation(s)
- Winnie Tan
- Genome Stability Unit, St. Vincent's Institute of Medical Research, 9 Princes St, Fitzroy, Victoria, 3065, Australia
| | - Andrew J Deans
- Genome Stability Unit, St. Vincent's Institute of Medical Research, 9 Princes St, Fitzroy, Victoria, 3065, Australia; Department of Medicine, St. Vincent's Health, The University of Melbourne, Australia. https://twitter.com/GenomeStability
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2
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Nagareddy B, Khan A, Kim H. Acetylation modulates the Fanconi anemia pathway by protecting FAAP20 from ubiquitin-mediated proteasomal degradation. J Biol Chem 2020; 295:13887-13901. [PMID: 32763975 DOI: 10.1074/jbc.ra120.015288] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/04/2020] [Indexed: 12/19/2022] Open
Abstract
Fanconi anemia (FA) is a chromosome instability syndrome of children caused by inherited mutations in one of FA genes, which together constitute a DNA interstrand cross-link (ICL) repair, or the FA pathway. Monoubiquitination of Fanconi anemia group D2 protein (FANCD2) by the multisubunit ubiquitin E3 ligase, the FA core complex, is an obligate step in activation of the FA pathway, and its activity needs to be tightly regulated. FAAP20 is a key structural component of the FA core complex, and regulated proteolysis of FAAP20 mediated by prolyl cis-trans isomerization and phosphorylation at a consensus phosphodegron motif is essential for preserving the integrity of the FA core complex, and thus FANCD2 monoubiquitination. However, how ubiquitin-dependent FAAP20 degradation is modulated to fine-tune FA pathway activation remains largely un-known. Here, we present evidence that FAAP20 is acetylated by the acetyltransferase p300/CBP on lysine 152, the key residue that when polyubiquitinated results in the degradation of FAAP20. Acetylation or mutation of the lysine residue stabilizes FAAP20 by preventing its ubiquitination, thereby protecting it from proteasome-dependent FAAP20 degradation. Consequently, disruption of the FAAP20 acetylation pathway impairs FANCD2 activation. Together, our study reveals a competition mechanism between ubiquitination and acetylation of a common lysine residue that controls FAAP20 stability and highlights a complex balancing between different posttranslational modifications as a way to refine the FA pathway signaling required for DNA ICL repair and genome stability.
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Affiliation(s)
- Bhavika Nagareddy
- Department of Pharmacological Sciences, State University of New York at Stony Brook, Stony Brook, New York, USA
| | - Arafat Khan
- Department of Pharmacological Sciences, State University of New York at Stony Brook, Stony Brook, New York, USA
| | - Hyungjin Kim
- Department of Pharmacological Sciences, State University of New York at Stony Brook, Stony Brook, New York, USA; Stony Brook Cancer Center, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York, USA.
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3
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Takahashi TS, Sato Y, Yamagata A, Goto-Ito S, Saijo M, Fukai S. Structural basis of ubiquitin recognition by the winged-helix domain of Cockayne syndrome group B protein. Nucleic Acids Res 2019; 47:3784-3794. [PMID: 30753618 PMCID: PMC6468306 DOI: 10.1093/nar/gkz081] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 01/25/2019] [Accepted: 02/01/2019] [Indexed: 12/18/2022] Open
Abstract
Cockayne syndrome group B (CSB, also known as ERCC6) protein is involved in many DNA repair processes and essential for transcription-coupled repair (TCR). The central region of CSB has the helicase motif, whereas the C-terminal region contains important regulatory elements for repair of UV- and oxidative stress-induced damages and double-strand breaks (DSBs). A previous study suggested that a small part (∼30 residues) within this region was responsible for binding to ubiquitin (Ub). Here, we show that the Ub-binding of CSB requires a larger part of CSB, which was previously identified as a winged-helix domain (WHD) and is involved in the recruitment of CSB to DSBs. We also present the crystal structure of CSB WHD in complex with Ub. CSB WHD folds as a single globular domain, defining a class of Ub-binding domains (UBDs) different from 23 UBD classes identified so far. The second α-helix and C-terminal extremity of CSB WHD interact with Ub. Together with structure-guided mutational analysis, we identified the residues critical for the binding to Ub. CSB mutants defective in the Ub binding reduced repair of UV-induced damage. This study supports the notion that DSB repair and TCR may be associated with the Ub-binding of CSB.
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Affiliation(s)
- Tomio S Takahashi
- Institute for Quantitative Biosciences, The University of Tokyo, Tokyo 113-0032, Japan.,Synchrotron Radiation Research Organization, The University of Tokyo, Tokyo 113-0032, Japan
| | - Yusuke Sato
- Institute for Quantitative Biosciences, The University of Tokyo, Tokyo 113-0032, Japan.,Synchrotron Radiation Research Organization, The University of Tokyo, Tokyo 113-0032, Japan.,Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8562, Japan
| | - Atsushi Yamagata
- Institute for Quantitative Biosciences, The University of Tokyo, Tokyo 113-0032, Japan.,Synchrotron Radiation Research Organization, The University of Tokyo, Tokyo 113-0032, Japan.,Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8562, Japan
| | - Sakurako Goto-Ito
- Institute for Quantitative Biosciences, The University of Tokyo, Tokyo 113-0032, Japan.,Synchrotron Radiation Research Organization, The University of Tokyo, Tokyo 113-0032, Japan
| | - Masafumi Saijo
- Graduate School of Frontier Biosciences, Osaka University, Yamadaoka 1-3, Suita, Osaka 565-0871, Japan
| | - Shuya Fukai
- Institute for Quantitative Biosciences, The University of Tokyo, Tokyo 113-0032, Japan.,Synchrotron Radiation Research Organization, The University of Tokyo, Tokyo 113-0032, Japan.,Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8562, Japan
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4
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Wojtaszek JL, Chatterjee N, Najeeb J, Ramos A, Lee M, Bian K, Xue JY, Fenton BA, Park H, Li D, Hemann MT, Hong J, Walker GC, Zhou P. A Small Molecule Targeting Mutagenic Translesion Synthesis Improves Chemotherapy. Cell 2019; 178:152-159.e11. [PMID: 31178121 DOI: 10.1016/j.cell.2019.05.028] [Citation(s) in RCA: 116] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 03/06/2019] [Accepted: 05/14/2019] [Indexed: 10/26/2022]
Abstract
Intrinsic and acquired drug resistance and induction of secondary malignancies limit successful chemotherapy. Because mutagenic translesion synthesis (TLS) contributes to chemoresistance as well as treatment-induced mutations, targeting TLS is an attractive avenue for improving chemotherapeutics. However, development of small molecules with high specificity and in vivo efficacy for mutagenic TLS has been challenging. Here, we report the discovery of a small-molecule inhibitor, JH-RE-06, that disrupts mutagenic TLS by preventing recruitment of mutagenic POL ζ. Remarkably, JH-RE-06 targets a nearly featureless surface of REV1 that interacts with the REV7 subunit of POL ζ. Binding of JH-RE-06 induces REV1 dimerization, which blocks the REV1-REV7 interaction and POL ζ recruitment. JH-RE-06 inhibits mutagenic TLS and enhances cisplatin-induced toxicity in cultured human and mouse cell lines. Co-administration of JH-RE-06 with cisplatin suppresses the growth of xenograft human melanomas in mice, establishing a framework for developing TLS inhibitors as a novel class of chemotherapy adjuvants.
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Affiliation(s)
- Jessica L Wojtaszek
- Department of Biochemistry, Duke University Medical Center, Durham, NC 27710, USA
| | - Nimrat Chatterjee
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Javaria Najeeb
- Department of Biochemistry, Duke University Medical Center, Durham, NC 27710, USA
| | - Azucena Ramos
- The Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Minhee Lee
- Department of Chemistry, Duke University, Durham, NC 27708, USA
| | - Ke Bian
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA
| | - Jenny Y Xue
- Trinity College of Arts & Sciences, Duke University, Durham, NC 27708, USA
| | - Benjamin A Fenton
- Department of Biochemistry, Duke University Medical Center, Durham, NC 27710, USA
| | - Hyeri Park
- Department of Chemistry, Duke University, Durham, NC 27708, USA
| | - Deyu Li
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA
| | - Michael T Hemann
- The Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
| | - Jiyong Hong
- Department of Chemistry, Duke University, Durham, NC 27708, USA; Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA.
| | - Graham C Walker
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
| | - Pei Zhou
- Department of Biochemistry, Duke University Medical Center, Durham, NC 27710, USA.
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5
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Wang J, Chan B, Tong M, Paung Y, Jo U, Martin D, Seeliger M, Haley J, Kim H. Prolyl isomerization of FAAP20 catalyzed by PIN1 regulates the Fanconi anemia pathway. PLoS Genet 2019; 15:e1007983. [PMID: 30789902 PMCID: PMC6400411 DOI: 10.1371/journal.pgen.1007983] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 03/05/2019] [Accepted: 01/23/2019] [Indexed: 01/27/2023] Open
Abstract
The Fanconi Anemia (FA) pathway is a multi-step DNA repair process at stalled replication forks in response to DNA interstrand cross-links (ICLs). Pathological mutation of key FA genes leads to the inherited disorder FA, characterized by progressive bone marrow failure and cancer predisposition. The study of FA is of great importance not only to children suffering from FA but also as a model to study cancer pathogenesis in light of genome instability among the general population. FANCD2 monoubiquitination by the FA core complex is an essential gateway that connects upstream DNA damage signaling to enzymatic steps of repair. FAAP20 is a key component of the FA core complex, and regulated proteolysis of FAAP20 mediated by the ubiquitin E3 ligase SCFFBW7 is critical for maintaining the integrity of the FA complex and FA pathway signaling. However, upstream regulatory mechanisms that govern this signaling remain unclear. Here, we show that PIN1, a phosphorylation-specific prolyl isomerase, regulates the integrity of the FA core complex, thus FA pathway activation. We demonstrate that PIN1 catalyzes cis-trans isomerization of the FAAP20 pSer48-Pro49 motif and promotes FAAP20 stability. Mechanistically, PIN1-induced conformational change of FAAP20 enhances its interaction with the PP2A phosphatase to counteract SCFFBW7-dependent proteolytic signaling at the phosphorylated degron motif. Accordingly, PIN1 deficiency impairs FANCD2 activation and the DNA ICL repair process. Together, our study establishes PIN1-dependent prolyl isomerization as a new regulator of the FA pathway and genomic integrity. Fanconi anemia (FA) is a devastating disease of children that leads to birth defects, bone marrow failure, and a variety of cancers early in their lives. Germ-line mutations in FA genes disrupt the DNA repair process, namely the FA pathway, resulting in genome instability and clinical features of FA patients. Thus, understanding the molecular mechanisms by which the FA pathway is regulated is critical for alleviating the burden of children suffering from FA and related cancer. A critical step in this pathway is the monoubiquitination of FANCD2 by a multi-subunit ubiquitin E3 ligase called the FA core complex, and the FAAP20 subunit is required for its functional integrity. Here, we show that proline-directed structural change of FAAP20 catalyzed by the PIN1 prolyl cis-trans isomerase is essential for the FAAP20 stability by counteracting phosphorylation-dependent proteolytic signaling of FAAP20 and thus promotes FANCD2 activation and DNA repair. Our findings reveal how PIN1-mediated phosphorylation signaling cascade and proteolysis preserves genomic integrity and how its deregulation is associated the pathogenesis of FA. Our knowledge on a new regulatory mechanism governing FA pathway activation may lead to the development of a new target for FA and FA-related malignancy.
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Affiliation(s)
- Jingming Wang
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, United States of America
| | - Bryan Chan
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, United States of America
| | - Michael Tong
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, United States of America
| | - YiTing Paung
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, United States of America
- Department of Chemistry, Stony Brook University, Stony Brook, New York, United States of America
| | - Ukhyun Jo
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, United States of America
| | - Dwight Martin
- Department of Pathology, Proteomics Center, Stony Brook University, Stony Brook, New York, United States of America
| | - Markus Seeliger
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, United States of America
- Stony Brook Cancer Center, Stony Brook University School of Medicine, Stony Brook, New York, United States of America
| | - John Haley
- Department of Pathology, Proteomics Center, Stony Brook University, Stony Brook, New York, United States of America
- Stony Brook Cancer Center, Stony Brook University School of Medicine, Stony Brook, New York, United States of America
| | - Hyungjin Kim
- Department of Pharmacological Sciences, Stony Brook University, Stony Brook, New York, United States of America
- Stony Brook Cancer Center, Stony Brook University School of Medicine, Stony Brook, New York, United States of America
- * E-mail:
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6
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Wu Q, Fenton BA, Wojtaszek JL, Zhou P. Probing the excited-state chemical shifts and exchange parameters by nitrogen-decoupled amide proton chemical exchange saturation transfer (HN dec-CEST). Chem Commun (Camb) 2018; 53:8541-8544. [PMID: 28707688 DOI: 10.1039/c7cc05021f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CEST-NMR spectroscopy is a powerful tool for probing the conformational dynamics of macromolecules. We present a HNdec-CEST experiment that simplifies the relaxation matrix, reduces fitting parameters, and enhances signal resolution. Importantly, fitting of HNdec-CEST profiles enables robust extraction of exchange rates as well as excited-state chemical shifts and populations.
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Affiliation(s)
- Qinglin Wu
- Department of Biochemistry, Duke University Medical Center, Durham, NC 27710, USA.
| | - Benjamin A Fenton
- Department of Biochemistry, Duke University Medical Center, Durham, NC 27710, USA.
| | - Jessica L Wojtaszek
- Department of Biochemistry, Duke University Medical Center, Durham, NC 27710, USA.
| | - Pei Zhou
- Department of Biochemistry, Duke University Medical Center, Durham, NC 27710, USA.
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7
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Takahashi TS, Hirade Y, Toma A, Sato Y, Yamagata A, Goto-Ito S, Tomita A, Nakada S, Fukai S. Structural insights into two distinct binding modules for Lys63-linked polyubiquitin chains in RNF168. Nat Commun 2018; 9:170. [PMID: 29330428 PMCID: PMC5766498 DOI: 10.1038/s41467-017-02345-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 11/22/2017] [Indexed: 12/18/2022] Open
Abstract
The E3 ubiquitin (Ub) ligase RNF168 plays a critical role in the initiation of the DNA damage response to double-strand breaks (DSBs). The recruitment of RNF168 by ubiquitylated targets involves two distinct regions, Ub-dependent DSB recruitment module (UDM) 1 and UDM2. Here we report the crystal structures of the complex between UDM1 and Lys63-linked diUb (K63-Ub2) and that between the C-terminally truncated UDM2 (UDM2ΔC) and K63-Ub2. In both structures, UDM1 and UDM2ΔC fold as a single α-helix. Their simultaneous bindings to the distal and proximal Ub moieties provide specificity for Lys63-linked Ub chains. Structural and biochemical analyses of UDM1 elucidate an Ub-binding mechanism between UDM1 and polyubiquitylated targets. Mutations of Ub-interacting residues in UDM2 prevent the accumulation of RNF168 to DSB sites in U2OS cells, whereas those in UDM1 have little effect, suggesting that the interaction of UDM2 with ubiquitylated and polyubiquitylated targets mainly contributes to the RNF168 recruitment. E3 ubiquitin ligase RNF168 is important for the repair of DNA double-strand breaks and recognizes ubiquitylated targets through two Ub-dependent DSB recruitment modules UDM1 and UDM2. Here the authors combine crystallography, cell biology and biochemical experiments to reveal how UDM1 and UDM2 interact with polyubiquitin chains.
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Affiliation(s)
- Tomio S Takahashi
- Institute of Molecular and Cellular Biosciences, The University of Tokyo, Tokyo, 113-0032, Japan.,Synchrotron Radiation Research Organization, The University of Tokyo, Tokyo, 113-0032, Japan
| | - Yoshihiro Hirade
- Department of Bioregulation and Cellular Response, Graduate School of Medicine, Osaka University, Osaka, 565-0871, Japan
| | - Aya Toma
- Institute of Molecular and Cellular Biosciences, The University of Tokyo, Tokyo, 113-0032, Japan.,Synchrotron Radiation Research Organization, The University of Tokyo, Tokyo, 113-0032, Japan.,Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8501, Japan
| | - Yusuke Sato
- Institute of Molecular and Cellular Biosciences, The University of Tokyo, Tokyo, 113-0032, Japan.,Synchrotron Radiation Research Organization, The University of Tokyo, Tokyo, 113-0032, Japan.,Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8501, Japan
| | - Atsushi Yamagata
- Institute of Molecular and Cellular Biosciences, The University of Tokyo, Tokyo, 113-0032, Japan.,Synchrotron Radiation Research Organization, The University of Tokyo, Tokyo, 113-0032, Japan.,Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8501, Japan
| | - Sakurako Goto-Ito
- Institute of Molecular and Cellular Biosciences, The University of Tokyo, Tokyo, 113-0032, Japan.,Synchrotron Radiation Research Organization, The University of Tokyo, Tokyo, 113-0032, Japan
| | - Akiko Tomita
- Department of Bioregulation and Cellular Response, Graduate School of Medicine, Osaka University, Osaka, 565-0871, Japan
| | - Shinichiro Nakada
- Department of Bioregulation and Cellular Response, Graduate School of Medicine, Osaka University, Osaka, 565-0871, Japan. .,Institute for Advanced Co-Creation Studies, Osaka University, Osaka, 565-0871, Japan.
| | - Shuya Fukai
- Institute of Molecular and Cellular Biosciences, The University of Tokyo, Tokyo, 113-0032, Japan. .,Synchrotron Radiation Research Organization, The University of Tokyo, Tokyo, 113-0032, Japan. .,Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8501, Japan.
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8
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Suzuki N, Rohaim A, Kato R, Dikic I, Wakatsuki S, Kawasaki M. A novel mode of ubiquitin recognition by the ubiquitin-binding zinc finger domain of WRNIP1. FEBS J 2016; 283:2004-17. [PMID: 27062441 DOI: 10.1111/febs.13734] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 03/28/2016] [Accepted: 04/06/2016] [Indexed: 12/25/2022]
Abstract
UNLABELLED The ubiquitin-binding zinc finger (UBZ) is a type of zinc-coordinating β-β-α fold domain found mainly in proteins involved in DNA repair and transcriptional regulation. Here, we report the crystal structure of the UBZ domain of Y-family DNA polymerase (pol) η and the crystal structure of the complex between the UBZ domain of Werner helicase-interacting protein 1 (WRNIP1) and ubiquitin, crystallized using the GFP fusion technique. In contrast to the pol η UBZ, which has been proposed to bind ubiquitin via its C-terminal α-helix, ubiquitin binds to a novel surface of WRNIP1 UBZ composed of the first β-strand and the C-terminal α-helix. In addition, we report the structure of the tandem UBZ domains of Tax1-binding protein 1 (TAX1BP1) and show that the second UBZ of TAX1BP1 binds ubiquitin, presumably in a manner similar to that of WRNIP1 UBZ. We propose that UBZ domains can be divided into at least two different types in terms of the ubiquitin-binding surfaces: the pol η type and the WRNIP1 type. DATABASE Structural data are available in the Protein Data Bank under accession numbers 3WUP (pol η UBZ), 3VHS (WRNIP1 UBZ), 3VHT (GFP-WRNIP1/ubiquitin), 4Z4K (TAX1BP1 UBZ1 + 2), and 4Z4M (TAX1BP1 UBZ2).
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Affiliation(s)
- Nobuhiro Suzuki
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan
| | - Ahmed Rohaim
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan.,Graduate University for Advanced Studies, Hayama, Kanagawa, Japan.,Departement of Biophysics, Faculty of Science, Cairo University, Giza, Egypt.,Cardiovascular Research institute, the University of California at San Francisco, CA, USA
| | - Ryuichi Kato
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan.,Graduate University for Advanced Studies, Hayama, Kanagawa, Japan
| | - Ivan Dikic
- Institute of Biochemistry II, Goethe University School of Medicine, Frankfurt (Main), Germany
| | - Soichi Wakatsuki
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan.,Graduate University for Advanced Studies, Hayama, Kanagawa, Japan.,Photon Science, SLAC National Accelerator Laboratory, Menlo Park, CA, USA.,Department of Structural Biology, School of Medicine, Stanford University, CA, USA
| | - Masato Kawasaki
- Structural Biology Research Center, Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, Japan.,Graduate University for Advanced Studies, Hayama, Kanagawa, Japan
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9
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Lim K, Lee MK, Duong PTM, Liu D, Sung S, Choi BS. Biophysical characterization of the interaction between FAAP20-UBZ4 domain and Rev1-BRCT domain. FEBS Lett 2015; 589:3037-43. [PMID: 26318859 DOI: 10.1016/j.febslet.2015.08.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 08/05/2015] [Accepted: 08/17/2015] [Indexed: 10/23/2022]
Abstract
FAAP20 (Fanconi anemia-associated protein 20) is a subunit of the Fanconi anemia (FA) core complex that repairs interstrand cross-links. To understand the molecular basis for the FA core complex-mediated recruitment of Rev1 to the DNA lesion, we characterized the interactions among FAAP20-UBZ4, Rev1-BRCT, and ubiquitin using NMR. We found that FAAP20-UBZ4 binds not only ubiquitin but also Rev1-BRCT. Mapping the protein-protein interactions showed that FAAP20-UBZ4 has distinct binding surfaces for ubiquitin and Rev1-BRCT. In addition, the chemical exchange patterns indicated that the interaction between FAAP20-UBZ4 and ubiquitin might enhance the binding affinity between FAAP20-UBZ4 and Rev1-BRCT. These results provide new insight into the Rev1 recognition mechanism by FAAP20.
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Affiliation(s)
- Kyungeun Lim
- Department of Chemistry, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Mi-Kyung Lee
- Structural biology & Nanopore laboratory, Functional Genomics Research Center, KRIBB, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Phuong T M Duong
- Department of Chemistry, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Dinan Liu
- Department of Chemistry, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Sieun Sung
- Department of Chemistry, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Byong-Seok Choi
- Department of Chemistry, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea.
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