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Kapuria V, Röhrig UF, Waridel P, Lammers F, Borodkin VS, van Aalten DMF, Zoete V, Herr W. The conserved threonine-rich region of the HCF-1 PRO repeat activates promiscuous OGT:UDP-GlcNAc glycosylation and proteolysis activities. J Biol Chem 2018; 293:17754-17768. [PMID: 30224358 PMCID: PMC6240873 DOI: 10.1074/jbc.ra118.004185] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 09/05/2018] [Indexed: 12/28/2022] Open
Abstract
O-Linked GlcNAc transferase (OGT) possesses dual glycosyltransferase–protease activities. OGT thereby stably glycosylates serines and threonines of numerous proteins and, via a transient glutamate glycosylation, cleaves a single known substrate—the so-called HCF-1PRO repeat of the transcriptional co-regulator host-cell factor 1 (HCF-1). Here, we probed the relationship between these distinct glycosylation and proteolytic activities. For proteolysis, the HCF-1PRO repeat possesses an important extended threonine-rich region that is tightly bound by the OGT tetratricopeptide-repeat (TPR) region. We report that linkage of this HCF-1PRO-repeat, threonine-rich region to heterologous substrate sequences also potentiates robust serine glycosylation with the otherwise poor Rp-αS-UDP-GlcNAc diastereomer phosphorothioate and UDP-5S-GlcNAc OGT co-substrates. Furthermore, it potentiated proteolysis of a non-HCF-1PRO-repeat cleavage sequence, provided it contained an appropriately positioned glutamate residue. Using serine- or glutamate-containing HCF-1PRO-repeat sequences, we show that proposed OGT-based or UDP-GlcNAc–based serine-acceptor residue activation mechanisms can be circumvented independently, but not when disrupted together. In contrast, disruption of both proposed activation mechanisms even in combination did not inhibit OGT-mediated proteolysis. These results reveal a multiplicity of OGT glycosylation strategies, some leading to proteolysis, which could be targets of alternative molecular regulatory strategies.
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Affiliation(s)
- Vaibhav Kapuria
- From the Center for Integrative Genomics, University of Lausanne, 1015 Lausanne, Switzerland
| | - Ute F Röhrig
- Molecular Modelling Group, SIB Swiss Institute of Bioinformatics, Lausanne 1015, Switzerland
| | - Patrice Waridel
- Protein Analysis Facility, Center for Integrative Genomics, Faculty of Biology and Medicine, University of Lausanne, 1015 Lausanne, Switzerland
| | - Fabienne Lammers
- From the Center for Integrative Genomics, University of Lausanne, 1015 Lausanne, Switzerland
| | - Vladimir S Borodkin
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee DD1 5EH, Scotland, United Kingdom
| | - Daan M F van Aalten
- Centre for Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee DD1 5EH, Scotland, United Kingdom
| | - Vincent Zoete
- Molecular Modelling Group, SIB Swiss Institute of Bioinformatics, Lausanne 1015, Switzerland; Department of Fundamental Oncology, Ludwig Lausanne Branch, Faculty of Biology and Medicine, University of Lausanne, 1066 Epalinges, Switzerland
| | - Winship Herr
- From the Center for Integrative Genomics, University of Lausanne, 1015 Lausanne, Switzerland.
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Aquino-Gil MO, Kupferschmid M, Shams-Eldin H, Schmidt J, Yamakawa N, Mortuaire M, Krzewinski F, Hardivillé S, Zenteno E, Rolando C, Bray F, Pérez Campos E, Dubremetz JF, Perez-Cervera Y, Schwarz RT, Lefebvre T. Apart From Rhoptries, Identification of Toxoplasma gondii's O-GlcNAcylated Proteins Reinforces the Universality of the O-GlcNAcome. Front Endocrinol (Lausanne) 2018; 9:450. [PMID: 30177911 PMCID: PMC6109639 DOI: 10.3389/fendo.2018.00450] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 07/20/2018] [Indexed: 11/23/2022] Open
Abstract
O-linked β-N-acetylglucosaminylation or O-GlcNAcylation is a widespread post-translational modification that belongs to the large and heterogeneous group of glycosylations. The functions managed by O-GlcNAcylation are diverse and include regulation of transcription, replication, protein's fate, trafficking, and signaling. More and more evidences tend to show that deregulations in the homeostasis of O-GlcNAcylation are involved in the etiology of metabolic diseases, cancers and neuropathologies. O-GlcNAc transferase or OGT is the enzyme that transfers the N-acetylglucosamine residue onto target proteins confined within the cytosolic and nuclear compartments. A form of OGT was predicted for Toxoplasma and recently we were the first to show evidence of O-GlcNAcylation in the apicomplexans Toxoplasma gondii and Plasmodium falciparum. Numerous studies have explored the O-GlcNAcome in a wide variety of biological models but very few focus on protists. In the present work, we used enrichment on sWGA-beads and immunopurification to identify putative O-GlcNAcylated proteins in Toxoplasma gondii. Many of the proteins found to be O-GlcNAcylated were originally described in higher eukaryotes and participate in cell shape organization, response to stress, protein synthesis and metabolism. In a more original way, our proteomic analyses, confirmed by sWGA-enrichment and click-chemistry, revealed that rhoptries, proteins necessary for invasion, are glycosylated. Together, these data show that regardless of proteins strictly specific to organisms, O-GlcNAcylated proteins are rather similar among living beings.
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Affiliation(s)
- Moyira Osny Aquino-Gil
- Univ. Lille, CNRS, UMR 8576, UGSF, Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
- Instituto Tecnológico de Oaxaca, Tecnológico Nacional de México, Oaxaca, Mexico
- Centro de Investigación Facultad de Medicina UNAM-UABJO, Facultad de Odontología, Universidad Autónoma Benito Juárez de Oaxaca, Oaxaca, Mexico
| | - Mattis Kupferschmid
- Laboratory of Parasitology, Institute for Virology, Philipps-University, Marburg, Germany
| | - Hosam Shams-Eldin
- Laboratory of Parasitology, Institute for Virology, Philipps-University, Marburg, Germany
| | - Jörg Schmidt
- Laboratory of Parasitology, Institute for Virology, Philipps-University, Marburg, Germany
| | - Nao Yamakawa
- Univ. Lille, CNRS, UMR 8576, UGSF, Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Marlène Mortuaire
- Univ. Lille, CNRS, UMR 8576, UGSF, Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Frédéric Krzewinski
- Univ. Lille, CNRS, UMR 8576, UGSF, Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Stéphan Hardivillé
- Univ. Lille, CNRS, UMR 8576, UGSF, Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Edgar Zenteno
- Facultad de Medicina de la Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Christian Rolando
- CNRS, MSAP USR 3290, FR 3688 FRABIO, FR 2638 Institut Eugène-Michel Chevreul, Université de Lille, Lille, France
| | - Fabrice Bray
- CNRS, MSAP USR 3290, FR 3688 FRABIO, FR 2638 Institut Eugène-Michel Chevreul, Université de Lille, Lille, France
| | - Eduardo Pérez Campos
- Instituto Tecnológico de Oaxaca, Tecnológico Nacional de México, Oaxaca, Mexico
- Centro de Investigación Facultad de Medicina UNAM-UABJO, Facultad de Odontología, Universidad Autónoma Benito Juárez de Oaxaca, Oaxaca, Mexico
| | - Jean-François Dubremetz
- Unité Mixte de Recherche 5235, Dynamique des Interactions Membranaires Normales et Pathologiques, Université Montpellier, Montpellier, France
| | - Yobana Perez-Cervera
- Instituto Tecnológico de Oaxaca, Tecnológico Nacional de México, Oaxaca, Mexico
- Centro de Investigación Facultad de Medicina UNAM-UABJO, Facultad de Odontología, Universidad Autónoma Benito Juárez de Oaxaca, Oaxaca, Mexico
| | - Ralph T. Schwarz
- Univ. Lille, CNRS, UMR 8576, UGSF, Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
- Laboratory of Parasitology, Institute for Virology, Philipps-University, Marburg, Germany
| | - Tony Lefebvre
- Univ. Lille, CNRS, UMR 8576, UGSF, Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
- *Correspondence: Tony Lefebvre
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3
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OGT: a short overview of an enzyme standing out from usual glycosyltransferases. Biochem Soc Trans 2017; 45:365-370. [PMID: 28408476 DOI: 10.1042/bst20160404] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 01/10/2017] [Accepted: 01/30/2017] [Indexed: 12/12/2022]
Abstract
O-GlcNAcylation is a highly dynamic post-translational modification whose level depends on nutrient status. Only two enzymes regulate O-GlcNAcylation cycling, the glycosyltransferase OGT (O-GlcNAc transferase) and the glycoside hydrolase OGA (O-GlcNAcase), that add and remove the GlcNAc moiety to and from acceptor proteins, respectively. During the last 30 years, OGT has emerged as a master regulator of cell life with O-GlcNAcylation being found in viruses, bacteria, insects, protists and metazoans. The study of OGT in different biological systems opens new perspectives for understanding this enzyme in many kingdoms of life. In this review, we summarize recent and older findings regarding the distribution of OGT in living organisms.
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Janetzko J, Trauger SA, Lazarus MB, Walker S. How the glycosyltransferase OGT catalyzes amide bond cleavage. Nat Chem Biol 2016; 12:899-901. [PMID: 27618188 PMCID: PMC5172607 DOI: 10.1038/nchembio.2173] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Accepted: 07/06/2016] [Indexed: 12/30/2022]
Abstract
The essential human enzyme O-linked β-N-acetylglucosamine transferase (OGT), known for modulating the functions of nuclear and cytoplasmic proteins through serine and threonine glycosylation, was unexpectedly implicated in the proteolytic maturation of the cell cycle regulator host cell factor-1 (HCF-1). Here we show that HCF-1 cleavage occurs via glycosylation of a glutamate side chain followed by on-enzyme formation of an internal pyroglutamate, which undergoes spontaneous backbone hydrolysis.
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Affiliation(s)
- John Janetzko
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts, 02138, USA
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, Massachusetts, 02115, USA
| | - Sunia A. Trauger
- Small Molecule Mass Spectrometry, Division of Science, Harvard University, Cambridge, Massachusetts, USA
| | - Michael B. Lazarus
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts, 02138, USA
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, Massachusetts, 02115, USA
| | - Suzanne Walker
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, Massachusetts, 02115, USA
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Kapuria V, Röhrig UF, Bhuiyan T, Borodkin VS, van Aalten DMF, Zoete V, Herr W. Proteolysis of HCF-1 by Ser/Thr glycosylation-incompetent O-GlcNAc transferase:UDP-GlcNAc complexes. Genes Dev 2016; 30:960-72. [PMID: 27056667 PMCID: PMC4840301 DOI: 10.1101/gad.275925.115] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 03/10/2016] [Indexed: 12/12/2022]
Abstract
In this study, Kapuria et al. investigate the dual glycosyltransferase–protease activity (which occurs in the same active site) of OGT. They show that glycosylation and proteolysis occur through separable mechanisms and present a model for the evolution of HCF-1 proteolysis by OGT. In complex with the cosubstrate UDP-N-acetylglucosamine (UDP-GlcNAc), O-linked-GlcNAc transferase (OGT) catalyzes Ser/Thr O-GlcNAcylation of many cellular proteins and proteolysis of the transcriptional coregulator HCF-1. Such a dual glycosyltransferase–protease activity, which occurs in the same active site, is unprecedented and integrates both reversible and irreversible forms of protein post-translational modification within one enzyme. Although occurring within the same active site, we show here that glycosylation and proteolysis occur through separable mechanisms. OGT consists of tetratricopeptide repeat (TPR) and catalytic domains, which, together with UDP-GlcNAc, are required for both glycosylation and proteolysis. Nevertheless, a specific TPR domain contact with the HCF-1 substrate is critical for proteolysis but not Ser/Thr glycosylation. In contrast, key catalytic domain residues and even a UDP-GlcNAc oxygen important for Ser/Thr glycosylation are irrelevant for proteolysis. Thus, from a dual glycosyltransferase–protease, essentially single-activity enzymes can be engineered both in vitro and in vivo. Curiously, whereas OGT-mediated HCF-1 proteolysis is limited to vertebrate species, invertebrate OGTs can cleave human HCF-1. We present a model for the evolution of HCF-1 proteolysis by OGT.
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Affiliation(s)
- Vaibhav Kapuria
- Center for Integrative Genomics, University of Lausanne, Lausanne 1015, Switzerland
| | - Ute F Röhrig
- Molecular Modeling Group, SIB Swiss Institute of Bioinformatics, Lausanne 1015, Switzerland
| | - Tanja Bhuiyan
- Center for Integrative Genomics, University of Lausanne, Lausanne 1015, Switzerland
| | - Vladimir S Borodkin
- MRC Protein Phosphorylation and Ubiquitylation Unit, College of Life Sciences, University of Dundee, Dundee DD1 5EH, United Kingdom
| | - Daan M F van Aalten
- MRC Protein Phosphorylation and Ubiquitylation Unit, College of Life Sciences, University of Dundee, Dundee DD1 5EH, United Kingdom
| | - Vincent Zoete
- Molecular Modeling Group, SIB Swiss Institute of Bioinformatics, Lausanne 1015, Switzerland
| | - Winship Herr
- Center for Integrative Genomics, University of Lausanne, Lausanne 1015, Switzerland
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