The Role of Posttranslational Modifications of Α-Synuclein And
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Computational Genome-Wide Identification of Heat Shock Protein Genes in the Bovine Genome [Version 1; Peer Review: 2 Approved, 1 Approved with Reservations]
F1000Research 2018, 7:1504 Last updated: 08 AUG 2021 RESEARCH ARTICLE Computational genome-wide identification of heat shock protein genes in the bovine genome [version 1; peer review: 2 approved, 1 approved with reservations] Oyeyemi O. Ajayi1,2, Sunday O. Peters3, Marcos De Donato2,4, Sunday O. Sowande5, Fidalis D.N. Mujibi6, Olanrewaju B. Morenikeji2,7, Bolaji N. Thomas 8, Matthew A. Adeleke 9, Ikhide G. Imumorin2,10,11 1Department of Animal Breeding and Genetics, Federal University of Agriculture, Abeokuta, Nigeria 2International Programs, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY, 14853, USA 3Department of Animal Science, Berry College, Mount Berry, GA, 30149, USA 4Departamento Regional de Bioingenierias, Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Queretaro, Mexico 5Department of Animal Production and Health, Federal University of Agriculture, Abeokuta, Nigeria 6Usomi Limited, Nairobi, Kenya 7Department of Animal Production and Health, Federal University of Technology, Akure, Nigeria 8Department of Biomedical Sciences, Rochester Institute of Technology, Rochester, NY, 14623, USA 9School of Life Sciences, University of KwaZulu-Natal, Durban, 4000, South Africa 10School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, 30032, USA 11African Institute of Bioscience Research and Training, Ibadan, Nigeria v1 First published: 20 Sep 2018, 7:1504 Open Peer Review https://doi.org/10.12688/f1000research.16058.1 Latest published: 20 Sep 2018, 7:1504 https://doi.org/10.12688/f1000research.16058.1 Reviewer Status Invited Reviewers Abstract Background: Heat shock proteins (HSPs) are molecular chaperones 1 2 3 known to bind and sequester client proteins under stress. Methods: To identify and better understand some of these proteins, version 1 we carried out a computational genome-wide survey of the bovine 20 Sep 2018 report report report genome. -
HER2 Stabilizes EGFR and Itself by Altering Autophosphorylation Patterns in a Manner That Overcomes Regulatory Mechanisms and Pr
Oncogene (2013) 32, 4169–4180 & 2013 Macmillan Publishers Limited All rights reserved 0950-9232/13 www.nature.com/onc ORIGINAL ARTICLE HER2 stabilizes EGFR and itself by altering autophosphorylation patterns in a manner that overcomes regulatory mechanisms and promotes proliferative and transformation signaling Z Hartman1, H Zhao1 and YM Agazie1,2 One of the causes of breast cancer is overexpression of the human epidermal growth factor receptor 2 (HER2). Enhanced receptor autophosphorylation and resistance to activation-induced downregulation have been suggested as mechanisms for HER2-induced sustained signaling and cell transformation. However, the molecular mechanisms underlying these possibilities remain incompletely understood. In the current report, we present evidence that show that HER2 overexpression does not lead to receptor hyper-autophosphorylation, but alters patterns in a manner that favors receptor stability and sustained signaling. Specifically, HER2 overexpression blocks epidermal growth factor receptor (EGFR) tyrosine phosphorylation on Y1045 and Y1068, the known docking sites of c-Cbl and Grb2, respectively, whereas promoting phosphorylation on Y1173, the known docking site of the Gab adaptor proteins and phospholipase C gamma. Under these conditions, HER2 itself is phosphorylated on Y1221/1222, with no known role, and on Y1248 that corresponds to Y1173 of EGFR. Interestingly, suppressed EGFR autophosphorylation on the Grb2 and c-Cbl-binding sites correlated with receptor stability and sustained signaling, suggesting that HER2 accomplishes these tasks by altering autophosphorylation patterns. In conformity with these findings, mutation of the Grb2-binding site on EGFR (Y1068F–EGFR) conferred resistance to ligand-induced degradation, which in turn induced sustained signaling, and increased cell proliferation and transformation. -
The Hsp70/Hsp90 Chaperone Machinery in Neurodegenerative Diseases
REVIEW published: 16 May 2017 doi: 10.3389/fnins.2017.00254 The Hsp70/Hsp90 Chaperone Machinery in Neurodegenerative Diseases Rachel E. Lackie 1, 2, Andrzej Maciejewski 1, 3, Valeriy G. Ostapchenko 1, Jose Marques-Lopes 1, Wing-Yiu Choy 3, Martin L. Duennwald 4, Vania F. Prado 1, 2, 5, 6 and Marco A. M. Prado 1, 2, 5, 6* 1 Molecular Medicine, Robarts Research Institute, University of Western Ontario, London, ON, Canada, 2 Program in Neuroscience, University of Western Ontario, London, ON, Canada, 3 Department of Biochemistry, University of Western Ontario, London, ON, Canada, 4 Department of Pathology and Laboratory Medicine, University of Western Ontario, London, ON, Canada, 5 Department of Physiology and Pharmacology, University of Western Ontario, London, ON, Canada, 6 Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada The accumulation of misfolded proteins in the human brain is one of the critical features of many neurodegenerative diseases, including Alzheimer’s disease (AD). Assembles of beta-amyloid (Aβ) peptide—either soluble (oligomers) or insoluble (plaques) and Edited by: Cintia Roodveldt, of tau protein, which form neurofibrillary tangles, are the major hallmarks of AD. Centro Andaluz de Biología Molecular Chaperones and co-chaperones regulate protein folding and client maturation, but they y Medicina Regenerativa, Spain also target misfolded or aggregated proteins for refolding or for degradation, mostly Reviewed by: Toshihide Takeuchi, by the proteasome. They form an important line of defense against misfolded proteins Osaka University, Japan and are part of the cellular quality control system. The heat shock protein (Hsp) family, Janine Kirstein, particularly Hsp70 and Hsp90, plays a major part in this process and it is well-known to Leibniz Institute for Molecular Pharmacology (FMP), Germany regulate protein misfolding in a variety of diseases, including tau levels and toxicity in AD. -
CLN8 Mutations Presenting with a Phenotypic Continuum of Neuronal Ceroid Lipofuscinosis—Literature Review and Case Report
G C A T T A C G G C A T genes Article CLN8 Mutations Presenting with a Phenotypic Continuum of Neuronal Ceroid Lipofuscinosis—Literature Review and Case Report Magdalena Badura-Stronka 1,*,†, Anna Winczewska-Wiktor 2,†, Anna Pietrzak 3,†, Adam Sebastian Hirschfeld 1, Tomasz Zemojtel 4, Katarzyna Woły ´nska 1, Katarzyna Bednarek-Rajewska 5, Monika Seget-Dubaniewicz 5, Agnieszka Matheisel 6, Anna Latos-Bielenska 1 and Barbara Steinborn 2 1 Chair and Department of Medical Genetics, Poznan University of Medical Sciences, 60-352 Poznan, Poland; [email protected] (A.S.H.); [email protected] (K.W.); [email protected] (A.L.-B.) 2 Chair and Department of Developmental Neurology, Poznan University of Medical Sciences, 60-355 Poznan, Poland; [email protected] (A.W.-W.); [email protected] (B.S.) 3 Department of Neurology, 10th Military Research Hospital and Polyclinic, 85-681 Bydgoszcz, Poland; [email protected] 4 BIH Genomics Core Unit, Campus Mitte, Charite University Medicine, 13353 Berlin, Germany; [email protected] 5 Department of Clinical Pathology, Poznan University of Medical Sciences, 60-355 Poznan, Poland; [email protected] (K.B.-R.); [email protected] (M.S.-D.) 6 Citation: Badura-Stronka, M.; Department of Developmental Neurology, Gdansk Medical University, 80-307 Gdansk, Poland; Winczewska-Wiktor, A.; Pietrzak, A.; [email protected] * Correspondence: [email protected] Hirschfeld, A.S.; Zemojtel, T.; † These authors contributed equally to this work. Woły´nska,K.; Bednarek-Rajewska, K.; Seget-Dubaniewicz, M.; Matheisel, A.; Latos-Bielenska, A.; Steinborn, B. Abstract: CLN8 is a ubiquitously expressed membrane-spanning protein that localizes primarily CLN8 Mutations Presenting with a in the ER, with partial localization in the ER-Golgi intermediate compartment. -
Understanding and Exploiting Post-Translational Modifications for Plant Disease Resistance
biomolecules Review Understanding and Exploiting Post-Translational Modifications for Plant Disease Resistance Catherine Gough and Ari Sadanandom * Department of Biosciences, Durham University, Stockton Road, Durham DH1 3LE, UK; [email protected] * Correspondence: [email protected]; Tel.: +44-1913341263 Abstract: Plants are constantly threatened by pathogens, so have evolved complex defence signalling networks to overcome pathogen attacks. Post-translational modifications (PTMs) are fundamental to plant immunity, allowing rapid and dynamic responses at the appropriate time. PTM regulation is essential; pathogen effectors often disrupt PTMs in an attempt to evade immune responses. Here, we cover the mechanisms of disease resistance to pathogens, and how growth is balanced with defence, with a focus on the essential roles of PTMs. Alteration of defence-related PTMs has the potential to fine-tune molecular interactions to produce disease-resistant crops, without trade-offs in growth and fitness. Keywords: post-translational modifications; plant immunity; phosphorylation; ubiquitination; SUMOylation; defence Citation: Gough, C.; Sadanandom, A. 1. Introduction Understanding and Exploiting Plant growth and survival are constantly threatened by biotic stress, including plant Post-Translational Modifications for pathogens consisting of viruses, bacteria, fungi, and chromista. In the context of agriculture, Plant Disease Resistance. Biomolecules crop yield losses due to pathogens are estimated to be around 20% worldwide in staple 2021, 11, 1122. https://doi.org/ crops [1]. The spread of pests and diseases into new environments is increasing: more 10.3390/biom11081122 extreme weather events associated with climate change create favourable environments for food- and water-borne pathogens [2,3]. Academic Editors: Giovanna Serino The significant estimates of crop losses from pathogens highlight the need to de- and Daisuke Todaka velop crops with disease-resistance traits against current and emerging pathogens. -
Autosomal-Dominant Adult Neuronal Ceroid Lipofuscinosis Caused by Duplication in DNAJC5 Initially Missed by Sanger and Whole-Exome Sequencing
European Journal of Human Genetics (2020) 28:783–789 https://doi.org/10.1038/s41431-019-0567-2 ARTICLE Autosomal-dominant adult neuronal ceroid lipofuscinosis caused by duplication in DNAJC5 initially missed by Sanger and whole-exome sequencing 1 2,3 1 1 1 Ivana Jedličková ● Maxime Cadieux-Dion ● Anna Přistoupilová ● Viktor Stránecký ● Hana Hartmannová ● 1 1 1,4 1,4 1 Kateřina Hodaňová ● Veronika Barešová ● Helena Hůlková ● Jakub Sikora ● Lenka Nosková ● 1 1 1 2 5 5 Dita Mušálková ● Petr Vyleťal ● Jana Sovová ● Patrick Cossette ● Eva Andermann ● Frederick Andermann ● 1 Stanislav Kmoch ● The Adult NCL Gene Discovery Consortium Received: 3 May 2019 / Revised: 29 November 2019 / Accepted: 10 December 2019 / Published online: 9 January 2020 © The Author(s), under exclusive licence to European Society of Human Genetics 2020 Abstract Adult-onset neuronal ceroid lipofuscinoses (ANCL, Kufs disease) are rare hereditary neuropsychiatric disorders characterized by intralysosomal accumulation of ceroid in tissues. The ceroid accumulation primarily affects the brain, leading to neuronal loss and progressive neurodegeneration. Although several causative genes have been identified (DNAJC5, CLN6, CTSF, GRN, 1234567890();,: 1234567890();,: CLN1, CLN5, ATP13A2), the genetic underpinnings of ANCL in some families remain unknown. Here we report one family with autosomal dominant (AD) Kufs disease caused by a 30 bp in-frame duplication in DNAJC5, encoding the cysteine-string protein alpha (CSPα). This variant leads to a duplication of the central core motif of the cysteine-string domain of CSPα and affects palmitoylation-dependent CSPα sorting in cultured neuronal cells similarly to two previously described CSPα variants, p.(Leu115Arg) and p.(Leu116del). Interestingly, the duplication was not detected initially by standard Sanger sequencing due to a preferential PCR amplification of the shorter wild-type allele and allelic dropout of the mutated DNAJC5 allele. -
Molecular Basis of Tank-Binding Kinase 1 Activation by Transautophosphorylation
Molecular basis of Tank-binding kinase 1 activation by transautophosphorylation Xiaolei Maa,1, Elizabeth Helgasonb,1, Qui T. Phungc, Clifford L. Quanb, Rekha S. Iyera, Michelle W. Leec, Krista K. Bowmana, Melissa A. Starovasnika, and Erin C. Dueberb,2 Departments of aStructural Biology, bEarly Discovery Biochemistry, and cProtein Chemistry, Genentech, South San Francisco, CA 94080 Edited by Tony Hunter, Salk Institute for Biological Studies, La Jolla, CA, and approved April 25, 2012 (received for review December 30, 2011) Tank-binding kinase (TBK)1 plays a central role in innate immunity: it the C-terminal scaffolding/dimerization domain (SDD), a do- serves as an integrator of multiple signals induced by receptor- main arrangement that appears to be shared among the IKK mediated pathogen detection and as a modulator of IFN levels. family of kinases (3). Deletion or mutation of the ULD in TBK1 Efforts to better understand the biology of this key immunological or IKKε severely impairs kinase activation and substrate phos- factor have intensified recently as growing evidence implicates phorylation in cells (22, 23). Furthermore, the integrity of the aberrant TBK1 activity in a variety of autoimmune diseases and ULD in IKKβ is not only required for kinase activity (24) but was fi cancers. Nevertheless, key molecular details of TBK1 regulation and shown also to confer substrate speci city in conjunction with the β substrate selection remain unanswered. Here, structures of phos- adjacent SDD (25). Recent crystal structures of the IKK phorylated and unphosphorylated human TBK1 kinase and ubiq- homodimer demonstrate that the ULD and SDD form a joint, uitin-like domains, combined with biochemical studies, indicate three-way interface with the KD within each protomer of the a molecular mechanism of activation via transautophosphorylation. -
Clinically Early-Stage Cspα Mutation Carrier Exhibits Remarkable Terminal Stage Neuronal Pathology with Minimal Evidence of Synaptic Loss Bruno A
Benitez et al. Acta Neuropathologica Communications (2015) 3:73 DOI 10.1186/s40478-015-0256-5 CASE REPORT Open Access Clinically early-stage CSPα mutation carrier exhibits remarkable terminal stage neuronal pathology with minimal evidence of synaptic loss Bruno A. Benitez1* , Nigel J. Cairns2,3,6, Robert E. Schmidt3, John C. Morris2, Joanne B. Norton4, Carlos Cruchaga4,6 and Mark S. Sands1,5,6 Abstract Autosomal dominant adult-onset neuronal ceroid lipofuscinosis (AD-ANCL) is a multisystem disease caused by mutations in the DNAJC5 gene. DNAJC5 encodes Cysteine String Protein-alpha (CSPα), a putative synaptic protein. AD-ANCL has been traditionally considered a lysosomal storage disease based on the intracellular accumulation of ceroid material. Here, we report for the first time the pathological findings of a patient in a clinically early stage of disease, which exhibits the typical neuronal intracellular ceroid accumulation and incipient neuroinflammation but no signs of brain atrophy, neurodegeneration or massive synaptic loss. Interestingly, we found minimal or no apparent reductions in CSPα or synaptophysin in the neuropil. In contrast, brain homogenates from terminal AD-ANCL patients exhibit significant reductions in SNARE-complex forming presynaptic protein levels, including a significant reduction in CSPα and SNAP-25. Frozen samples for the biochemical analyses of synaptic proteins were not available for the early stage AD-ANLC patient. These results suggest that the degeneration seen in the patients with AD-ANCL reported here might be a consequence of both the early effects of CSPα mutations at the cellular soma, most likely lysosome function, and subsequent neuronal loss and synaptic dysfunction. -
Cysteine-179 of Iκb Kinase Β Plays a Critical Role in Enzyme Activation by Promoting Phosphorylation of Activation Loop Serines
EXPERIMENTAL and MOLECULAR MEDICINE, Vol. 38, No. 5, 546-552, October 2006 Cysteine-179 of IκB kinase β plays a critical role in enzyme activation by promoting phosphorylation of activation loop serines Mi-Sun Byun, Jin Choi and interaction with ATP. Dae-Myung Jue1 Keywords: cysteine; IκB kinase; NF-κB; phosphor- Department of Biochemistry, College of Medicine ylation; protein serine-threonine kinases The Catholic University of Korea Seoul 137-701, Korea 1Corresponding author: Tel, 82-2-590-1177; Introduction Fax, 82-2-596-4435; E-mail, [email protected] Nuclear factor-κB (NF-κB) is a transcription factor that regulates expression of a wide range of cellular Accepted 20 September 2006 and viral genes that play pivotal roles in immune and 12-14 inflammatory responses (Barnes and Karin, 1997). Abbreviations: 15dPGJ2, 15-deoxy-∆ -PGJ2; GST, glutathione In unstimulated cells, NF-κB is associated with S-transferase; HA, hemagglutinin; IKK, IκB kinase; MAPKKK, mito- inhibitory IκB proteins that inhibit nuclear localization gen-activated protein kinase kinase kinase; MEKK, MAPK/ and DNA binding of NF-κB. In response to stimuli extracellular signal-regulated kinase kinase; NIK, NF-κB-inducing including TNF, IL-1, LPS, or viruses, the IκBs are kinase phosphorylated and subsequently degraded, releasing NF-κB to bind DNA and induce expression of specific Abstract target genes. Phosphorylation of IκB is one of the primary IκB kinase β (IKKβ) subunit of IKK complex is points of regulation in NF-κB activation pathway, and essential for the activation of NF-κB in response to occurs by IκB kinase (IKK). IKK is present as a various proinflammatory signals. -
Protein Homeostasis, Second Edition
This is a free sample of content from Protein Homeostasis, Second Edition. Click here for more information on how to buy the book. Index A overview of diseases, 13, 41–43 Abf2, 160 polyphosphate AD. See Alzheimer’s disease amyloidogenic protein interactions, 393–395 AFG3L2, 162 cytotoxicity amelioration, 396–397 Africa swine fever virus (ASFV), 468 prospects for study, 52, 55 Aging protein homeostasis context, 48–49 heat shock factors, 431 structure–activity relationship, 14–15 proteostasis network regulation, 450–452 therapeutic intervention, 50–52 Ago2, 335, 467 toxicity, 47–48 Aha1, 333, 335, 338–339, 504 Amyotrophic lateral sclerosis (ALS), 214, 262, 264, AIRAP, 267 290–291, 293, 404, 409, 524, 532 AIRAPL, 267–268 ApoB, 135 AKT, 274, 467 ASFV. See Africa swine fever virus ALK, 503 ATAD1, 104 ALMC2, 487 ATF4, 79, 88, 182, 186, 189, 445–446 ALP. See Autophagy lysosome pathway ATF5, 182, 186, 189 a-Synuclein, 375, 522 ATF6, 60, 62–64, 79, 445–446, 481–482, 484–489 ALS. See Amyotrophic lateral sclerosis ATFS-1, 99, 180–181, 185, 188–189, 445–446 Alzheimer’s disease (AD), 186, 519 Atg7, 293 autophagy lysosomal pathway, 290–291 Atg32, 167 chaperone studies, 213–214, 216–217, 222 ATM, 313 Hsp90 studies, 337 ATR, 313 polyphosphate studies, 392, 394–395, 399 Atropine, 501 AMPK, 444 ATXN2, 524 Amyloid Autophagy lysosome pathway (ALP) chaperone modulation chaperone-mediated autophagy, 288–289 aggregation prevention, 217–222 history of study, 285 degradation of amyloid-forming proteins, 225–227 macroautophagy, 287–288 disaggregation of amyloids, -
The HSP70 Chaperone Machinery: J Proteins As Drivers of Functional Specificity
REVIEWS The HSP70 chaperone machinery: J proteins as drivers of functional specificity Harm H. Kampinga* and Elizabeth A. Craig‡ Abstract | Heat shock 70 kDa proteins (HSP70s) are ubiquitous molecular chaperones that function in a myriad of biological processes, modulating polypeptide folding, degradation and translocation across membranes, and protein–protein interactions. This multitude of roles is not easily reconciled with the universality of the activity of HSP70s in ATP-dependent client protein-binding and release cycles. Much of the functional diversity of the HSP70s is driven by a diverse class of cofactors: J proteins. Often, multiple J proteins function with a single HSP70. Some target HSP70 activity to clients at precise locations in cells and others bind client proteins directly, thereby delivering specific clients to HSP70 and directly determining their fate. In their native cellular environment, polypeptides are participates in such diverse cellular functions. Their constantly at risk of attaining conformations that pre- functional diversity is remarkable considering that vent them from functioning properly and/or cause them within and across species, HSP70s have high sequence to aggregate into large, potentially cytotoxic complexes. identity. They share a single biochemical activity: an Molecular chaperones guide the conformation of proteins ATP-dependent client-binding and release cycle com- throughout their lifetime, preventing their aggregation bined with client protein recognition, which is typi- by protecting interactive surfaces against non-productive cally rather promiscuous. This apparent conundrum interactions. Through such inter actions, molecular chap- is resolved by the fact that HSP70s do not work alone, erones aid in the folding of nascent proteins as they are but rather as ‘HSP70 machines’, collaborating with synthesized by ribosomes, drive protein transport across and being regulated by several cofactors. -
Drosophila and Human Transcriptomic Data Mining Provides Evidence for Therapeutic
Drosophila and human transcriptomic data mining provides evidence for therapeutic mechanism of pentylenetetrazole in Down syndrome Author Abhay Sharma Institute of Genomics and Integrative Biology Council of Scientific and Industrial Research Delhi University Campus, Mall Road Delhi 110007, India Tel: +91-11-27666156, Fax: +91-11-27662407 Email: [email protected] Nature Precedings : hdl:10101/npre.2010.4330.1 Posted 5 Apr 2010 Running head: Pentylenetetrazole mechanism in Down syndrome 1 Abstract Pentylenetetrazole (PTZ) has recently been found to ameliorate cognitive impairment in rodent models of Down syndrome (DS). The mechanism underlying PTZ’s therapeutic effect is however not clear. Microarray profiling has previously reported differential expression of genes in DS. No mammalian transcriptomic data on PTZ treatment however exists. Nevertheless, a Drosophila model inspired by rodent models of PTZ induced kindling plasticity has recently been described. Microarray profiling has shown PTZ’s downregulatory effect on gene expression in fly heads. In a comparative transcriptomics approach, I have analyzed the available microarray data in order to identify potential mechanism of PTZ action in DS. I find that transcriptomic correlates of chronic PTZ in Drosophila and DS counteract each other. A significant enrichment is observed between PTZ downregulated and DS upregulated genes, and a significant depletion between PTZ downregulated and DS dowwnregulated genes. Further, the common genes in PTZ Nature Precedings : hdl:10101/npre.2010.4330.1 Posted 5 Apr 2010 downregulated and DS upregulated sets show enrichment for MAP kinase pathway. My analysis suggests that downregulation of MAP kinase pathway may mediate therapeutic effect of PTZ in DS. Existing evidence implicating MAP kinase pathway in DS supports this observation.