A Review of Phosphatidate Phosphatase Assays
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Alopecia in a Viable Phospholipase C Delta 1 and Phospholipase C Delta 3 Double Mutant
Alopecia in a Viable Phospholipase C Delta 1 and Phospholipase C Delta 3 Double Mutant Fabian Runkel1¤, Maik Hintze1,2, Sebastian Griesing1,2, Marion Michels1, Birgit Blanck1, Kiyoko Fukami3, Jean-Louis Gue´net4, Thomas Franz1* 1 Anatomisches Institut, Universita¨t Bonn, Bonn, Germany, 2 Studiengang Molekulare Biomedizin, LIMES, Bonn, Germany, 3 Laboratory of Genome and Biosignal, Tokyo University of Pharmacy and Life Science, Hachioji-city, Tokyo, Japan, 4 De´partement de Biologie du De´veloppement, Institut Pasteur, Paris, France Abstract Background: Inositol 1,4,5trisphosphate (IP3) and diacylglycerol (DAG) are important intracellular signalling molecules in various tissues. They are generated by the phospholipase C family of enzymes, of which phospholipase C delta (PLCD) forms one class. Studies with functional inactivation of Plcd isozyme encoding genes in mice have revealed that loss of both Plcd1 and Plcd3 causes early embryonic death. Inactivation of Plcd1 alone causes loss of hair (alopecia), whereas inactivation of Plcd3 alone has no apparent phenotypic effect. To investigate a possible synergy of Plcd1 and Plcd3 in postnatal mice, novel mutations of these genes compatible with life after birth need to be found. Methodology/Principal Findings: We characterise a novel mouse mutant with a spontaneously arisen mutation in Plcd3 (Plcd3mNab) that resulted from the insertion of an intracisternal A particle (IAP) into intron 2 of the Plcd3 gene. This mutation leads to the predominant expression of a truncated PLCD3 protein lacking the N-terminal PH domain. C3H mice that carry one or two mutant Plcd3mNab alleles are phenotypically normal. However, the presence of one Plcd3mNab allele exacerbates the alopecia caused by the loss of functional Plcd1 in Del(9)olt1Pas mutant mice with respect to the number of hair follicles affected and the body region involved. -
(PDE 1 B 1) Correlates with Brain Regions Having Extensive Dopaminergic Innervation
The Journal of Neuroscience, March 1994, 14(3): 1251-l 261 Expression of a Calmodulin-dependent Phosphodiesterase lsoform (PDE 1 B 1) Correlates with Brain Regions Having Extensive Dopaminergic Innervation Joseph W. Polli and Randall L. Kincaid Section on Immunology, Laboratory of Molecular and Cellular Neurobiology, National Institute on Alcohol Abuse and Alcoholism, Rockville, Maryland 20852 Cyclic nucleotide-dependent protein phosphorylation plays PDE implies an important physiological role for Ca2+-regu- a central role in neuronal signal transduction. Neurotrans- lated attenuation of CAMP-dependent signaling pathways mitter-elicited increases in cAMP/cGMP brought about by following dopaminergic stimulation. activation of adenylyl and guanylyl cyclases are downre- [Key words: CAMP, cyclase, striatum, dopamine, basal gulated by multiple phosphodiesterase (PDE) enzymes. In ganglia, DARPP-321 brain, the calmodulin (CaM)-dependent isozymes are the major degradative activities and represent a unique point of Cyclic nucleotides, acting as “second messengers”or via direct intersection between the cyclic nucleotide- and calcium effects, regulate a diverse array of neuronal functions, from ion (Ca*+)-mediated second messenger systems. Here we de- channel conductance to gene expression. Hydrolysis of 3’,5’- scribe the distribution of the PDEl Bl (63 kDa) CaM-depen- cyclic nucleotidesto 5’-nucleosidemonophosphates is the major dent PDE in mouse brain. An anti-peptide antiserum to this mechanismfor decreasingintracellular cyclic nucleotide levels. isoform immunoprecipitated -3O-40% of cytosolic PDE ac- This reaction is catalyzed by cyclic nucleotide phosphodiester- tivity, whereas antiserum to PDElA2 (61 kDa isoform) re- ase (PDE) enzymes that constitute a large superfamily (Beavo moved 60-70%, demonstrating that these isoforms are the and Reifsynder, 1990). -
Reduction of Pectinesterase Activity in a Commercial Enzyme Preparation
Journal of the Science of Food and Agriculture J Sci Food Agric 85:1613–1621 (2005) DOI: 10.1002/jsfa.2154 Reduction of pectinesterase activity in a commercial enzyme preparation by pulsed electric fields: comparison of inactivation kinetic models Joaquın´ Giner, Pascal Grouberman, Vicente Gimeno and Olga Martın´ ∗ Department of Food Technology, University of Lleida, CeRTA-UTPV, ETSEA, Avda Alcalde Rovira Roure 191, 25198-Lleida, Spain Abstract: The inactivation of pectinesterase (PE) in a commercial enzyme preparation (CEP) under high intensity pulsed electric fields (HIPEF) was studied. After desalting and water dilution of the raw CEP, samples were exposed to exponentially decay waveform pulses for up to 463 µs at electric field intensities ranging from 19 to 38 kV cm−1. Pulses were applied in monopolar mode. Experimental data were fitted to a first-order kinetic model as well as to models based on Fermi, Hulsheger¨ or Weibull equations to describe PE inactivation kinetics. Characteristic parameters for each model were calculated. Relationships between some of the parameters and process variables were obtained. The Weibull model yielded the best accuracy factor. The relationship between residual PE and input of electrical energy density was found to be that of exponential decay. 2005 Society of Chemical Industry Keywords: pulsed electric fields; kinetics; pectinesterase; model; inactivation INTRODUCTION It has become customary to use CEPs in fruit and Pectinesterase (PE; EC 3.1.1.11) is a pectic enzyme vegetable juice technology. Depending -
Serum 5-Nucleotidase by Theodore F
J Clin Pathol: first published as 10.1136/jcp.7.4.341 on 1 November 1954. Downloaded from J. clin. Path. (1954), 7, 341. SERUM 5-NUCLEOTIDASE BY THEODORE F. DIXON AND MARY PURDOM t0o From the Biochemistry Department, the Institute of Orthopaedics, Stanmore, Middlesex (RECEIVED FOR PUBLICATION DECEMBER 8. 1953) Reis (1934, 1940, 1951) has demonstrated the add the molybdate solution, and dilute with washings to presence of alkaline phosphatase in various tissues 1 litre with water. specifically hydrolysing 5-nucleotidase such as Standard Phosphate Solution.-KH2PO4 0.02195 g., adenosine and inosine-5-phosphoric acids. The and 50 g. trichloracetic acid, made up to 1 litre. This enzyme has its optimum action at pH 7.8 and in all solution contains 0.02 mg. P in 4 ml. human tissues except intestinal mucosa its activity, at the physiological pH range, is much more Methods pronounced than that of the non-specific alkaline Non-specific alkaline phosphatase activity is high at phosphatase. Thus ossifying cartilage, one of the pH 9 towards phenylphosphate adenosine phosphate classical sites of high alkaline phosphatase activity, and glycerophosphate, in this decreasing order (cf. Reis, although very active against say phenyl phosphoric 1951). At pH 7.5, however, the total phosphatase acids at pH 9, is more active against adenosine-5- activity is equally low towards phenyl- or glycero-phos- phosphoric at pH 7.5. This finding suggested to phate -nd the higher activity towards adenosine-5- phosphate at this reaction is reasonably inferred to be Reis that the enzyme might play a part in calcifica- due to the specific 5-nucleotidase. -
Regulation of Calmodulin-Stimulated Cyclic Nucleotide Phosphodiesterase (PDE1): Review
95-105 5/6/06 13:44 Page 95 INTERNATIONAL JOURNAL OF MOLECULAR MEDICINE 18: 95-105, 2006 95 Regulation of calmodulin-stimulated cyclic nucleotide phosphodiesterase (PDE1): Review RAJENDRA K. SHARMA, SHANKAR B. DAS, ASHAKUMARY LAKSHMIKUTTYAMMA, PONNIAH SELVAKUMAR and ANURAAG SHRIVASTAV Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Cancer Research Division, Saskatchewan Cancer Agency, 20 Campus Drive, Saskatoon SK S7N 4H4, Canada Received January 16, 2006; Accepted March 13, 2006 Abstract. The response of living cells to change in cell 6. Differential inhibition of PDE1 isozymes and its environment depends on the action of second messenger therapeutic applications molecules. The two second messenger molecules cAMP and 7. Role of proteolysis in regulating PDE1A2 Ca2+ regulate a large number of eukaryotic cellular events. 8. Role of PDE1A1 in ischemic-reperfused heart Calmodulin-stimulated cyclic nucleotide phosphodiesterase 9. Conclusion (PDE1) is one of the key enzymes involved in the complex interaction between cAMP and Ca2+ second messenger systems. Some PDE1 isozymes have similar kinetic and 1. Introduction immunological properties but are differentially regulated by Ca2+ and calmodulin. Accumulating evidence suggests that the A variety of cellular activities are regulated through mech- activity of PDE1 is selectively regulated by cross-talk between anisms controlling the level of cyclic nucleotides. These Ca2+ and cAMP signalling pathways. These isozymes are mechanisms include synthesis, degradation, efflux and seque- also further distinguished by various pharmacological agents. stration of cyclic adenosine 3':5'-monophosphate (cAMP) and We have demonstrated a potentially novel regulation of PDE1 cyclic guanosine 3':5'- monophosphate (cGMP) within the by calpain. -
Mouse Plcd3 Conditional Knockout Project (CRISPR/Cas9)
https://www.alphaknockout.com Mouse Plcd3 Conditional Knockout Project (CRISPR/Cas9) Objective: To create a Plcd3 conditional knockout Mouse model (C57BL/6J) by CRISPR/Cas-mediated genome engineering. Strategy summary: The Plcd3 gene (NCBI Reference Sequence: NM_152813 ; Ensembl: ENSMUSG00000020937 ) is located on Mouse chromosome 11. 15 exons are identified, with the ATG start codon in exon 1 and the TGA stop codon in exon 15 (Transcript: ENSMUST00000103077). Exon 9~10 will be selected as conditional knockout region (cKO region). Deletion of this region should result in the loss of function of the Mouse Plcd3 gene. To engineer the targeting vector, homologous arms and cKO region will be generated by PCR using BAC clone RP23-133L3 as template. Cas9, gRNA and targeting vector will be co-injected into fertilized eggs for cKO Mouse production. The pups will be genotyped by PCR followed by sequencing analysis. Note: Exon 9 starts from about 59.53% of the coding region. The knockout of Exon 9~10 will result in frameshift of the gene. The size of intron 8 for 5'-loxP site insertion: 1710 bp, and the size of intron 10 for 3'-loxP site insertion: 714 bp. The size of effective cKO region: ~945 bp. The cKO region does not have any other known gene. Page 1 of 8 https://www.alphaknockout.com Overview of the Targeting Strategy Wildtype allele 5' gRNA region gRNA region 3' 1 8 9 10 11 15 Targeting vector Targeted allele Constitutive KO allele (After Cre recombination) Legends Exon of mouse Plcd3 Homology arm cKO region loxP site Page 2 of 8 https://www.alphaknockout.com Overview of the Dot Plot Window size: 10 bp Forward Reverse Complement Sequence 12 Note: The sequence of homologous arms and cKO region is aligned with itself to determine if there are tandem repeats. -
The Protein Phosphatase PP2A Plays Multiple Roles in Plant Development by Regulation of Vesicle Traffic—Facts and Questions
International Journal of Molecular Sciences Review The Protein Phosphatase PP2A Plays Multiple Roles in Plant Development by Regulation of Vesicle Traffic—Facts and Questions Csaba Máthé *, Márta M-Hamvas, Csongor Freytag and Tamás Garda Department of Botany, Faculty of Science and Technology, University of Debrecen, H-4032 Debrecen, Hungary; [email protected] (M.M.-H.); [email protected] (C.F.); [email protected] (T.G.) * Correspondence: [email protected] Abstract: The protein phosphatase PP2A is essential for the control of integrated eukaryotic cell functioning. Several cellular and developmental events, e.g., plant growth regulator (PGR) mediated signaling pathways are regulated by reversible phosphorylation of vesicle traffic proteins. Reviewing present knowledge on the relevant role of PP2A is timely. We discuss three aspects: (1) PP2A regulates microtubule-mediated vesicle delivery during cell plate assembly. PP2A dephosphorylates members of the microtubule associated protein family MAP65, promoting their binding to microtubules. Regulation of phosphatase activity leads to changes in microtubule organization, which affects vesicle traffic towards cell plate and vesicle fusion to build the new cell wall between dividing cells. (2) PP2A-mediated inhibition of target of rapamycin complex (TORC) dependent signaling pathways contributes to autophagy and this has possible connections to the brassinosteroid signaling pathway. (3) Transcytosis of vesicles transporting PIN auxin efflux carriers. PP2A regulates vesicle localization and recycling of PINs related to GNOM (a GTP–GDP exchange factor) mediated pathways. The proper intracellular traffic of PINs is essential for auxin distribution in the plant body, thus in whole Citation: Máthé, C.; M-Hamvas, M.; plant development. -
Download Product Insert (PDF)
PRODUCT INFORMATION Lysophospholipase D Polyclonal Antibody Item No. 10005375 Overview and Properties Contents: This vial contains 500 µl of peptide affinity-purified antibody. Synonyms: Autotaxin, ENPP2, lysoPLD Immunogen: Peptide from the C-terminal region of rat LysoPLD Species Reactivity: (+) Human, mouse, and rat; other species not tested Form: Liquid Storage: -20°C (as supplied) Stability: ≥1 year Storage Buffer: TBS, pH 7.4, with 50% glycerol, 0.1%l BSA, and 0.02% sodium azide Host: Rabbit Applications: Immunocytochemistry (ICC), Immunohistochemistry (IHC), and Western blot (WB); the recommended starting dilution for ICC is 1:500, 1:80 for IHC, and 1:200 for WB. Other applications were not tested, therefore optimal working concentration/dilution should be determined empirically. Images 1 · · · · · · · 104 kDa · · · · · · · 60 kDa Lane 1: Human cerebella supernatant (40 µg) Immunohistochemistry analysis of formalin-fixed, paraffin-embedded (FFPE) human cerebellum ǎssue aer heat-induced anǎgen retrieval in pH 6.0 citrate buffer. Aer incubaǎon with Lysophospholipase D Polyclonal Anǎbody (Item No. 10005375) at a 1:80 diluǎon, slides were incubated with bioǎnylated secondary anǎbody, followed by alkaline phosphatase-strepavidin and chromogen (DAB). WARNING CAYMAN CHEMICAL THIS PRODUCT IS FOR RESEARCH ONLY - NOT FOR HUMAN OR VETERINARY DIAGNOSTIC OR THERAPEUTIC USE. 1180 EAST ELLSWORTH RD SAFETY DATA ANN ARBOR, MI 48108 · USA This material should be considered hazardous until further information becomes available. Do not ingest, inhale, get in eyes, on skin, or on clothing. Wash thoroughly after handling. Before use, the user must review the complete Safety Data Sheet, which has been sent via email to your institution. PHONE: [800] 364-9897 WARRANTY AND LIMITATION OF REMEDY [734] 971-3335 Buyer agrees to purchase the material subject to Cayman’s Terms and Conditions. -
Analyses of PDE-Regulated Phosphoproteomes Reveal Unique and Specific Camp-Signaling Modules in T Cells
Analyses of PDE-regulated phosphoproteomes reveal unique and specific cAMP-signaling modules in T cells Michael-Claude G. Beltejara, Ho-Tak Laua, Martin G. Golkowskia, Shao-En Onga, and Joseph A. Beavoa,1 aDepartment of Pharmacology, University of Washington, Seattle, WA 98195 Contributed by Joseph A. Beavo, May 28, 2017 (sent for review March 10, 2017; reviewed by Paul M. Epstein, Donald H. Maurice, and Kjetil Tasken) Specific functions for different cyclic nucleotide phosphodiester- to bias T-helper polarization toward Th2, Treg, or Th17 pheno- ases (PDEs) have not yet been identified in most cell types. types (13, 14). In a few cases increased cAMP may even potentiate Conventional approaches to study PDE function typically rely on the T-cell activation signal (15), particularly at early stages of measurements of global cAMP, general increases in cAMP- activation. Recent MS-based proteomic studies have been useful dependent protein kinase (PKA), or the activity of exchange in characterizing changes in the phosphoproteome of T cells under protein activated by cAMP (EPAC). Although newer approaches various stimuli such as T-cell receptor stimulation (16), prosta- using subcellularly targeted FRET reporter sensors have helped glandin signaling (17), and oxidative stress (18), so much of the define more compartmentalized regulation of cAMP, PKA, and total Jurkat phosphoproteome is known. Until now, however, no EPAC, they have limited ability to link this regulation to down- information on the regulation of phosphopeptides by PDEs has stream effector molecules and biological functions. To address this been available in these cells. problem, we have begun to use an unbiased mass spectrometry- Inhibitors of cAMP PDEs are useful tools to study PKA/EPAC- based approach coupled with treatment using PDE isozyme- mediated signaling, and selective inhibitors for each of the 11 PDE – selective inhibitors to characterize the phosphoproteomes of the families have been developed (19 21). -
Stimulation of Phospholipid Metabolism in Embryonic Muscle
Proc. Natl. Acad. Sci. USA Vol. 76, No. 9, pp. 4474-4478, September 1979 Cell Biology Stimulation of phospholipid metabolism in embryonic muscle cells treated with phospholipase C (phospholipid synthesis/myogenesis) CLAUDIA KENT Department of Biochemistry, Purdue University, West Lafayette, Indiana 47907 Communicated by Edwin T. Mertz, May 29, 1979 ABSTRACT Phospholipid metabolism is dramatically MATERIALS AND METHODS stimulated in cultured myogenic cells in which cell fusion was inhibited with phospholipase C (phosphatidylcholine choline- Cultured Cells. Pectoral muscle from 11-day chicken em- phosphohydrolase; EC 3.1.4.3). Phospholipase C was active bryos was dissected, loose connective tissue was removed, and under the culture conditions as shown by the degradation of the muscle was minced into 1- to 2-mm fragments. Cells were exogenous phosphatidylcholine. Rates of incorporation of 32p; dissociated from the tissue fragments by trituration with a and [metkyl-3Hlcholine into lipids were about 5-fold greater in phospholipase-treated cells than in either untreated fusing cells pasteur pipette (8) in calcium- and magnesium-free Earle's salt or untreated cells prevented from fusing by-calcium deprivation. solution. The cell suspension was filtered through cheesecloth, The greatest stimulation in the phospholipase C-treated cultures preplated for 15 min (9), and then diluted with culture medium occurred with synthesis of phospai tlcholine and sphin- to 5 X 105 cells/ml. The cells were plated in tissue culture dishes gomyelin; synthesis of phosphatidyinositol and cardiolipin was precoated with rat tail collagen (10) at 8 ml of cell suspension not stimulated. Degradation of cellular [32Plphosphatidylcholine and appearance in the culture medium of the degradation per 100 mm dish. -
Diagnostic Value of Serum Enzymes-A Review on Laboratory Investigations
Review Article ISSN 2250-0480 VOL 5/ ISSUE 4/OCT 2015 DIAGNOSTIC VALUE OF SERUM ENZYMES-A REVIEW ON LABORATORY INVESTIGATIONS. 1VIDYA SAGAR, M.SC., 2DR. VANDANA BERRY, MD AND DR.ROHIT J. CHAUDHARY, MD 1Vice Principal, Institute of Allied Health Sciences, Christian Medical College, Ludhiana 2Professor & Ex-Head of Microbiology Christian Medical College, Ludhiana 3Assistant Professor Department of Biochemistry Christian Medical College, Ludhiana ABSTRACT Enzymes are produced intracellularly, and released into the plasma and body fluids, where their activities can be measured by their abilities to accelerate the particular chemical reactions they catalyze. But different serum enzymes are raised when different tissues are damaged. So serum enzyme determination can be used both to detect cellular damage and to suggest its location in situ. Some of the biochemical markers such as alanine aminotransferase, aspartate aminotransferase, alkaline phasphatase, gamma glutamyl transferase, nucleotidase, ceruloplasmin, alpha fetoprotein, amylase, lipase, creatine phosphokinase and lactate dehydrogenase are mentioned to evaluate diseases of liver, pancreas, skeletal muscle, bone, etc. Such enzyme test may assist the physician in diagnosis and treatment. KEYWORDS: Liver Function tests, Serum Amylase, Lipase, CPK and LDH. INTRODUCTION mitochondrial AST is seen in extensive tissue necrosis during myocardial infarction and also in chronic Liver diseases like liver tissue degeneration DIAGNOSTIC SERUM ENZYME and necrosis². But lesser amounts are found in Enzymes are very helpful in the diagnosis of brain, pancreas and lung. Although GPT is plentiful cardiac, hepatic, pancreatic, muscular, skeltal and in the liver and occurs only in the small amount in malignant disorders. Serum for all enzyme tests the other tissues. -
Emerging Roles of PHLPP Phosphatases in Cell Signaling
PA61CH26_Newton ARjats.cls September 22, 2020 12:5 Annual Review of Pharmacology and Toxicology PHLPPing the Script: Emerging Roles of PHLPP Phosphatases in Cell Signaling Timothy R. Baffi,∗ Ksenya Cohen Katsenelson,∗ and Alexandra C. Newton Department of Pharmacology, University of California, San Diego, La Jolla, California 92093-0721, USA; email: [email protected] Annu. Rev. Pharmacol. Toxicol.2021. 61:26.1–26.21 Keywords The Annual Review of Pharmacology and Toxicology is PHLPP, Akt, PKC, phosphatase, phosphorylation, cancer, transcription online at pharmtox.annualreviews.org https://doi.org/10.1146/annurev-pharmtox-031820- Abstract 122108 Whereas protein kinases have been successfully targeted for a variety of dis- Copyright © 2021 by Annual Reviews. eases, protein phosphatases remain an underutilized therapeutic target, in All rights reserved part because of incomplete characterization of their effects on signaling net- ∗ These authors contributed equally to this article works. The pleckstrin homology domain leucine-rich repeat protein phos- Annu. Rev. Pharmacol. Toxicol. 2021.61. Downloaded from www.annualreviews.org phatase (PHLPP) is a relatively new player in the cell signaling field, and new Access provided by University of California - San Diego on 11/11/20. For personal use only. roles in controlling the balance among cell survival, proliferation, and apop- tosis are being increasingly identified. Originally characterized for its tumor- suppressive function in deactivating the prosurvival kinase Akt, PHLPP may have an opposing role in promoting survival, as recent evidence suggests. Additionally, identification of the transcription factor STAT1 as a substrate unveils a role for PHLPP as a critical mediator of transcriptional programs in cancer and the inflammatory response.