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Allen MC, Karplus PA, Mehl RA, Cooley RB. Genetic Encoding of Phosphorylated Amino Acids into Proteins. Chem Rev 2024; 124:6592-6642. [PMID: 38691379 DOI: 10.1021/acs.chemrev.4c00110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
Reversible phosphorylation is a fundamental mechanism for controlling protein function. Despite the critical roles phosphorylated proteins play in physiology and disease, our ability to study individual phospho-proteoforms has been hindered by a lack of versatile methods to efficiently generate homogeneous proteins with site-specific phosphoamino acids or with functional mimics that are resistant to phosphatases. Genetic code expansion (GCE) is emerging as a transformative approach to tackle this challenge, allowing direct incorporation of phosphoamino acids into proteins during translation in response to amber stop codons. This genetic programming of phospho-protein synthesis eliminates the reliance on kinase-based or chemical semisynthesis approaches, making it broadly applicable to diverse phospho-proteoforms. In this comprehensive review, we provide a brief introduction to GCE and trace the development of existing GCE technologies for installing phosphoserine, phosphothreonine, phosphotyrosine, and their mimics, discussing both their advantages as well as their limitations. While some of the technologies are still early in their development, others are already robust enough to greatly expand the range of biologically relevant questions that can be addressed. We highlight new discoveries enabled by these GCE approaches, provide practical considerations for the application of technologies by non-GCE experts, and also identify avenues ripe for further development.
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Affiliation(s)
- Michael C Allen
- Department of Biochemistry and Biophysics, Oregon State University, GCE4All Research Center, 2011 Agricultural and Life Sciences, Corvallis, Oregon 97331 United States
| | - P Andrew Karplus
- Department of Biochemistry and Biophysics, Oregon State University, GCE4All Research Center, 2011 Agricultural and Life Sciences, Corvallis, Oregon 97331 United States
| | - Ryan A Mehl
- Department of Biochemistry and Biophysics, Oregon State University, GCE4All Research Center, 2011 Agricultural and Life Sciences, Corvallis, Oregon 97331 United States
| | - Richard B Cooley
- Department of Biochemistry and Biophysics, Oregon State University, GCE4All Research Center, 2011 Agricultural and Life Sciences, Corvallis, Oregon 97331 United States
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Bulangalire N, Claeyssen C, Douffi S, Agbulut O, Cieniewski-Bernard C. A novel 2D-electrophoresis method for the simultaneous visualization of phosphorylated and O-GlcNAcylated proteoforms of a protein. Electrophoresis 2024. [PMID: 38700120 DOI: 10.1002/elps.202400043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 04/16/2024] [Indexed: 05/05/2024]
Abstract
Post-translational modifications (PTMs), such as phosphorylation and O-N-acetyl-β-d-glucosaminylation (O-GlcNAcylation), are involved in the fine spatiotemporal regulation of protein functions, and their dynamic interplay is at the heart of protein language. The coexistence of phosphorylation and O-GlcNAcylation on a protein leads to the diversification of proteoforms. It is therefore essential to decipher the phosphorylation/O-GlcNAcylation interplay on protein species that orchestrates cellular processes in a specific physiological or pathophysiological context. However, simultaneous visualization of phosphorylation and O-GlcNAcylation patterns on a protein of interest remains a challenge. To map the proteoforms of a protein, we have developed an easy-to-use two-dimensional electrophoresis method with a single sample processing permitting simultaneous visualization of the phosphorylated and the O-GlcNAcylated forms of the protein of interest. This method, we termed 2D-WGA-Phos-tag-PAGE relies on proteoforms retardation by affinity gel electrophoresis. With this novel approach, we established the cartography of phospho- and glycoforms of αB-crystallin and desmin in the whole extract and the cytoskeleton protein subfraction in skeletal muscle cells. Interestingly, we have shown that the pattern of phosphorylation and O-GlcNAcylation depends of the subcellular subfraction. Moreover, we have also shown that proteotoxic stress condition increased the complexity of the pattern of PTMs on αB-crystallin.
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Affiliation(s)
- Nathan Bulangalire
- Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale, ULR 7369 - URePSSS - Unité de Recherche Pluridisciplinaire Sport Santé Société, F-59000, Lille, France
- CHU Lille, Université de Lille, F-59000, Lille, France
- Sorbonne Université, Institut de Biologie Paris-Seine (IBPS), CNRS UMR 8256, Inserm ERL U1164, Biological Adaptation and Ageing, 75005, Paris, France
| | - Charlotte Claeyssen
- Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale, ULR 7369 - URePSSS - Unité de Recherche Pluridisciplinaire Sport Santé Société, F-59000, Lille, France
| | - Sana Douffi
- Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale, ULR 7369 - URePSSS - Unité de Recherche Pluridisciplinaire Sport Santé Société, F-59000, Lille, France
| | - Onnik Agbulut
- Sorbonne Université, Institut de Biologie Paris-Seine (IBPS), CNRS UMR 8256, Inserm ERL U1164, Biological Adaptation and Ageing, 75005, Paris, France
| | - Caroline Cieniewski-Bernard
- Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale, ULR 7369 - URePSSS - Unité de Recherche Pluridisciplinaire Sport Santé Société, F-59000, Lille, France
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Liu Z, Hou S, He P. Detection of Ligand-Induced Receptor Kinase and Signaling Component Phosphorylation with Mn 2+-Phos-Tag SDS-PAGE. Methods Mol Biol 2024; 2731:205-214. [PMID: 38019436 DOI: 10.1007/978-1-0716-3511-7_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
Plasma membrane-resident receptor kinases (RKs) are crucial for plants to sense endogenous and exogenous signals in regulating growth, development, and stress response. Upon perception of ligands by the extracellular domain, RKs are usually activated by auto- and/or trans-phosphorylation of the cytoplasmic kinase domain, which in turn phosphorylates downstream substrates to relay the signaling. Therefore, monitoring ligand-induced in vivo phosphorylation dynamics of RKs and their associated proteins provides mechanistic insight into RK activation and downstream signal transduction. Phos-tag specifically binds phosphomonoester dianions of phosphorylated serine, threonine, and tyrosine residues, which enables Phos-tag-containing SDS-PAGE gels to separate phosphorylated proteins from non-phosphorylated form. Here, we describe a detailed method of Mn2+-Phos-tag SDS-PAGE analysis to detect the ligand-induced in vivo phosphorylation of RKs and associated proteins.
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Affiliation(s)
- Zunyong Liu
- Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Shuguo Hou
- Peking University Institute of Advanced Agricultural Sciences, Shandong Laboratory of Advanced Agriculture Sciences in Weifang, Weifang, China
| | - Ping He
- Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI, USA.
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Yu G, Mou Y, Shoaib N, He X, Liu L, Di R, Mughal N, Zhang N, Huang Y. Serine 31 Phosphorylation-Driven Regulation of AGPase Activity: Potential Implications for Enhanced Starch Yields in Crops. Int J Mol Sci 2023; 24:15283. [PMID: 37894964 PMCID: PMC10607544 DOI: 10.3390/ijms242015283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/10/2023] [Accepted: 10/12/2023] [Indexed: 10/29/2023] Open
Abstract
ADP-Glc pyrophosphorylase (AGPase), which catalyzes the transformation of ATP and glucose-1-phosphate (Glc-1-P) into adenosine diphosphate glucose (ADP-Glc), acts as a rate-limiting enzyme in crop starch biosynthesis. Prior research has hinted at the regulation of AGPase by phosphorylation in maize. However, the identification and functional implications of these sites remain to be elucidated. In this study, we identified the phosphorylation site (serine at the 31st position of the linear amino acid sequence) of the AGPase large subunit (Sh2) using iTRAQTM. Subsequently, to ascertain the impact of Sh2 phosphorylation on AGPase, we carried out site-directed mutations creating Sh2-S31A (serine residue replaced with alanine) to mimic dephosphorylation and Sh2-S31D (serine residue replaced with aspartic acid) or Sh2-S31E (serine residue replaced with glutamic acid) to mimic phosphorylation. Preliminary investigations were performed to determine Sh2 subcellular localization, its interaction with Bt2, and the resultant AGPase enzymatic activity. Our findings indicate that phosphorylation exerts no impact on the stability or localization of Sh2. Furthermore, none of these mutations at the S31 site of Sh2 seem to affect its interaction with Bt2 (smaller subunit). Intriguingly, all S31 mutations in Sh2 appear to enhance AGPase activity when co-transfected with Bt2, with Sh2-S31E demonstrating a substantial five-fold increase in AGPase activity compared to Sh2. These novel insights lay a foundational groundwork for targeted improvements in AGPase activity, thus potentially accelerating the production of ADP-Glc (the primary substrate for starch synthesis), promising implications for improved starch biosynthesis, and holding the potential to significantly impact agricultural practices.
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Affiliation(s)
- Guowu Yu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China; (Y.M.); (N.S.); (L.L.); (R.D.); (N.M.); (Y.H.)
- National Demonstration Center for Experimental Crop Science Education, College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuewei Mou
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China; (Y.M.); (N.S.); (L.L.); (R.D.); (N.M.); (Y.H.)
- National Demonstration Center for Experimental Crop Science Education, College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China
| | - Noman Shoaib
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China; (Y.M.); (N.S.); (L.L.); (R.D.); (N.M.); (Y.H.)
- National Demonstration Center for Experimental Crop Science Education, College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China
| | - Xuewu He
- College of Life Science, Sichuan Agricultural University, Ya’an 625014, China;
| | - Lun Liu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China; (Y.M.); (N.S.); (L.L.); (R.D.); (N.M.); (Y.H.)
| | - Runze Di
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China; (Y.M.); (N.S.); (L.L.); (R.D.); (N.M.); (Y.H.)
| | - Nishbah Mughal
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China; (Y.M.); (N.S.); (L.L.); (R.D.); (N.M.); (Y.H.)
| | - Na Zhang
- College of Science, Sichuan Agricultural University, Chengdu 611130, China;
| | - Yubi Huang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, Chengdu 611130, China; (Y.M.); (N.S.); (L.L.); (R.D.); (N.M.); (Y.H.)
- National Demonstration Center for Experimental Crop Science Education, College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China
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Zittlau K, Nashier P, Cavarischia-Rega C, Macek B, Spät P, Nalpas N. Recent progress in quantitative phosphoproteomics. Expert Rev Proteomics 2023; 20:469-482. [PMID: 38116637 DOI: 10.1080/14789450.2023.2295872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 12/12/2023] [Indexed: 12/21/2023]
Abstract
INTRODUCTION Protein phosphorylation is a critical post-translational modification involved in the regulation of numerous cellular processes from signal transduction to modulation of enzyme activities. Knowledge of dynamic changes of phosphorylation levels during biological processes, under various treatments or between healthy and disease models is fundamental for understanding the role of each phosphorylation event. Thereby, LC-MS/MS based technologies in combination with quantitative proteomics strategies evolved as a powerful strategy to investigate the function of individual protein phosphorylation events. AREAS COVERED State-of-the-art labeling techniques including stable isotope and isobaric labeling provide precise and accurate quantification of phosphorylation events. Here, we review the strengths and limitations of recent quantification methods and provide examples based on current studies, how quantitative phosphoproteomics can be further optimized for enhanced analytic depth, dynamic range, site localization, and data integrity. Specifically, reducing the input material demands is key to a broader implementation of quantitative phosphoproteomics, not least for clinical samples. EXPERT OPINION Despite quantitative phosphoproteomics is one of the most thriving fields in the proteomics world, many challenges still have to be overcome to facilitate even deeper and more comprehensive analyses as required in the current research, especially at single cell levels and in clinical diagnostics.
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Affiliation(s)
- Katharina Zittlau
- Quantitative Proteomics, Interfaculty Institute of Cell Biology, University of Tuebingen, Tuebingen , Germany
| | - Payal Nashier
- Quantitative Proteomics, Interfaculty Institute of Cell Biology, University of Tuebingen, Tuebingen , Germany
| | - Claudia Cavarischia-Rega
- Quantitative Proteomics, Interfaculty Institute of Cell Biology, University of Tuebingen, Tuebingen , Germany
| | - Boris Macek
- Quantitative Proteomics, Interfaculty Institute of Cell Biology, University of Tuebingen, Tuebingen , Germany
| | - Philipp Spät
- Quantitative Proteomics, Interfaculty Institute of Cell Biology, University of Tuebingen, Tuebingen , Germany
| | - Nicolas Nalpas
- Quantitative Proteomics, Interfaculty Institute of Cell Biology, University of Tuebingen, Tuebingen , Germany
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Okumoto K, Fujiki Y. Analysis of Peroxisome Biogenesis by Phos-Tag SDS-PAGE. Methods Mol Biol 2023; 2643:207-215. [PMID: 36952188 DOI: 10.1007/978-1-0716-3048-8_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
Phos-tag, a selective phosphate-binding molecule, and Phos-tag-based methodologies have been developed to investigate the phosphoproteome. In various analytical techniques using Phos-tag derivatives, phosphate-affinity electrophoresis using Phos-tag acrylamide, called Phos-tag SDS-PAGE, enables separation of phosphorylated proteins with a slower migration from non-phosphorylated proteins in polyacrylamide gels. The procedures for Phos-tag SDS-PAGE are largely common to those for conventional SDS-PAGE, thus being readily available for all laboratories. Phos-tag SDS-PAGE is widely applied to quantitative analysis of the overall phosphorylation state depending on the number and/or sites of the phosphate group. Phos-tag SDS-PAGE has also been introduced to the field of peroxisome study, including oxidative stress-induced and mitosis-specific phosphorylation of Pex14, a central component of the translocation machinery complex for peroxisomal matrix proteins. Here, we describe a practical protocol for Phos-tag SDS-PAGE and its application to peroxisome biogenesis research.
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Affiliation(s)
- Kanji Okumoto
- Department of Biology, Faculty of Sciences, Kyushu University, Nishi-ku, Fukuoka, Japan
| | - Yukio Fujiki
- Medical Institute of Bioregulation, Institute of Rheological Functions of Food-Kyushu University Collaboration Program, Kyushu University, Higashi-ku, Fukuoka, Japan.
- Institute of Rheological Function of Food, Fukuoka, Japan.
- Graduate School of Science, University of Hyogo, Hyogo, Japan.
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Shedding Light on the Role of Phosphorylation in Plant Autophagy. FEBS Lett 2022; 596:2172-2185. [DOI: 10.1002/1873-3468.14352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/30/2022] [Accepted: 04/04/2022] [Indexed: 11/07/2022]
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Palanivel C, Chaudhary N, Seshacharyulu P, Cox JL, Yan Y, Batra SK, Ouellette MM. The GSK3 kinase and LZTR1 protein regulate the stability of Ras family proteins and the proliferation of pancreatic cancer cells. Neoplasia 2022; 25:28-40. [PMID: 35114566 PMCID: PMC8814762 DOI: 10.1016/j.neo.2022.01.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/30/2021] [Accepted: 01/12/2022] [Indexed: 11/24/2022]
Abstract
Ras family proteins are membrane-bound GTPases that control proliferation, survival, and motility. Many forms of cancers are driven by the acquisition of somatic mutations in a RAS gene. In pancreatic cancer (PC), more than 90% of tumors carry an activating mutation in KRAS. Mutations in components of the Ras signaling pathway can also be the cause of RASopathies, a group of developmental disorders. In a subset of RASopathies, the causal mutations are in the LZTR1 protein, a substrate adaptor for E3 ubiquitin ligases that promote the degradation of Ras proteins. Here, we show that the function of LZTR1 is regulated by the glycogen synthase kinase 3 (GSK3). In PC cells, inhibiting or silencing GSK3 led to a decline in the level of Ras proteins, including both wild type Ras proteins and the oncogenic Kras protein. This decline was accompanied by a 3-fold decrease in the half-life of Ras proteins and was blocked by the inhibition of the proteasome or the knockdown of LZTR1. Irrespective of the mutational status of KRAS, the decline in Ras proteins was observed and accompanied by a loss of cell proliferation. This loss of proliferation was blocked by the knockdown of LZTR1 and could be recapitulated by the silencing of either KRAS or GSK3. These results reveal a novel GSK3-regulated LZTR1-dependent mechanism that controls the stability of Ras proteins and proliferation of PC cells. The significance of this novel pathway to Ras signaling and its contribution to the therapeutic properties of GSK3 inhibitors are both discussed.
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Oya R, Tsukamoto O, Hitsumoto T, Nakahara N, Okamoto C, Matsuoka K, Kato H, Inohara H, Takashima S. Gene Transfer of Skeletal Muscle-Type Myosin Light Chain Kinase via Adeno-Associated Virus 6 Improves Muscle Functions in an Amyotrophic Lateral Sclerosis Mouse Model. Int J Mol Sci 2022; 23:1747. [PMID: 35163674 PMCID: PMC8836241 DOI: 10.3390/ijms23031747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 01/29/2022] [Accepted: 02/01/2022] [Indexed: 12/04/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease that shows progressive muscle weakness. A few treatments exist including symptomatic therapies, which can prolong survival or reduce a symptom; however, no fundamental therapies have been found. As a therapeutic strategy, enhancing muscle force is important for patients' quality of life. In this study, we focused on skeletal muscle-specific myosin regulatory light chain kinase (skMLCK), which potentially enhances muscle contraction, as overexpression of skMLCK was thought to improve muscle function. The adeno-associated virus serotype 6 encoding skMLCK (AAV6/skMLCK) and eGFP (control) was produced and injected intramuscularly into the lower limbs of SOD1G37R mice, which are a familial ALS model. AAV6/skMLCK showed the successful expression of skMLCK in the muscle tissues. Although the control did not affect the muscle force in both of the WT and SOD1G37R mice, AAV6/skMLCK enhanced the twitch force of SOD1G37R mice and the tetanic force of WT and SOD1G37R mice. These results indicate that overexpression of skMLCK can enhance the tetanic force of healthy muscle as well as rescue weakened muscle function. In conclusion, the gene transfer of skMLCK has the potential to be a new therapy for ALS as well as for other neuromuscular diseases.
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Affiliation(s)
- Ryohei Oya
- Department of Medical Biochemistry, Osaka University Graduate School of Medicine/Frontier Biosciences, Osaka 565-0871, Japan; (R.O.); (T.H.); (C.O.); (K.M.); (H.K.); (S.T.)
- Department of Otorhinolaryngology Head and Neck Surgery, Osaka University Graduate School of Medicine, Osaka 565-0871, Japan;
| | - Osamu Tsukamoto
- Department of Medical Biochemistry, Osaka University Graduate School of Medicine/Frontier Biosciences, Osaka 565-0871, Japan; (R.O.); (T.H.); (C.O.); (K.M.); (H.K.); (S.T.)
| | - Tatsuro Hitsumoto
- Department of Medical Biochemistry, Osaka University Graduate School of Medicine/Frontier Biosciences, Osaka 565-0871, Japan; (R.O.); (T.H.); (C.O.); (K.M.); (H.K.); (S.T.)
| | - Naoya Nakahara
- Department of Molecular Physiology, The Jikei University School of Medicine, Tokyo 105-8461, Japan;
| | - Chisato Okamoto
- Department of Medical Biochemistry, Osaka University Graduate School of Medicine/Frontier Biosciences, Osaka 565-0871, Japan; (R.O.); (T.H.); (C.O.); (K.M.); (H.K.); (S.T.)
| | - Ken Matsuoka
- Department of Medical Biochemistry, Osaka University Graduate School of Medicine/Frontier Biosciences, Osaka 565-0871, Japan; (R.O.); (T.H.); (C.O.); (K.M.); (H.K.); (S.T.)
| | - Hisakazu Kato
- Department of Medical Biochemistry, Osaka University Graduate School of Medicine/Frontier Biosciences, Osaka 565-0871, Japan; (R.O.); (T.H.); (C.O.); (K.M.); (H.K.); (S.T.)
| | - Hidenori Inohara
- Department of Otorhinolaryngology Head and Neck Surgery, Osaka University Graduate School of Medicine, Osaka 565-0871, Japan;
| | - Seiji Takashima
- Department of Medical Biochemistry, Osaka University Graduate School of Medicine/Frontier Biosciences, Osaka 565-0871, Japan; (R.O.); (T.H.); (C.O.); (K.M.); (H.K.); (S.T.)
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Identification and validation of new ERK substrates by phosphoproteomic technologies including Phos-tag SDS-PAGE. J Proteomics 2022; 258:104543. [DOI: 10.1016/j.jprot.2022.104543] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 02/15/2022] [Accepted: 02/15/2022] [Indexed: 11/17/2022]
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