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Leading Article the Molecular and Genetic Base of Congenital Transport
Gut 2000;46:585–587 585 Gut: first published as 10.1136/gut.46.5.585 on 1 May 2000. Downloaded from Leading article The molecular and genetic base of congenital transport defects In the past 10 years, several monogenetic abnormalities Given the size of SGLT1 mRNA (2.3 kb), the gene is large, have been identified in families with congenital intestinal with 15 exons, and the introns range between 3 and 2.2 kb. transport defects. Wright and colleagues12 described the A single base change was identified in the entire coding first, which concerns congenital glucose and galactose region of one child, a finding that was confirmed in the malabsorption. Subsequently, altered genes were identified other aZicted sister. This was a homozygous guanine to in partial or total loss of nutrient absorption, including adenine base change at position 92. The patient’s parents cystinuria, lysinuric protein intolerance, Menkes’ disease were heterozygotes for this mutation. In addition, it was (copper malabsorption), bile salt malabsorption, certain found that the 92 mutation was associated with inhibition forms of lipid malabsorption, and congenital chloride diar- of sugar transport by the protein. Since the first familial rhoea. Altered genes may also result in decreased secretion study, genomic DNA has been screened in 31 symptomatic (for chloride in cystic fibrosis) or increased absorption (for GGM patients in 27 kindred from diVerent parts of the sodium in Liddle’s syndrome or copper in Wilson’s world. In all 33 cases the mutation produced truncated or disease)—for general review see Scriver and colleagues,3 mutant proteins. -
ATP-Citrate Lyase Has an Essential Role in Cytosolic Acetyl-Coa Production in Arabidopsis Beth Leann Fatland Iowa State University
Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 2002 ATP-citrate lyase has an essential role in cytosolic acetyl-CoA production in Arabidopsis Beth LeAnn Fatland Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/rtd Part of the Molecular Biology Commons, and the Plant Sciences Commons Recommended Citation Fatland, Beth LeAnn, "ATP-citrate lyase has an essential role in cytosolic acetyl-CoA production in Arabidopsis " (2002). Retrospective Theses and Dissertations. 1218. https://lib.dr.iastate.edu/rtd/1218 This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. ATP-citrate lyase has an essential role in cytosolic acetyl-CoA production in Arabidopsis by Beth LeAnn Fatland A dissertation submitted to the graduate faculty in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Major: Plant Physiology Program of Study Committee: Eve Syrkin Wurtele (Major Professor) James Colbert Harry Homer Basil Nikolau Martin Spalding Iowa State University Ames, Iowa 2002 UMI Number: 3158393 INFORMATION TO USERS The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleed-through, substandard margins, and improper alignment can adversely affect reproduction. In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. -
A Polyketoacyl-Coa Thiolase-Dependent Pathway for the Synthesis of Polyketide Backbones
ARTICLES https://doi.org/10.1038/s41929-020-0471-8 A polyketoacyl-CoA thiolase-dependent pathway for the synthesis of polyketide backbones Zaigao Tan1,3, James M. Clomburg1,2, Seokjung Cheong1, Shuai Qian1 and Ramon Gonzalez 1,2 ✉ Polyketides found in nature originate from backbones synthesized through iterative decarboxylative Claisen condensations catalysed by polyketide synthases (PKSs). However, PKSs suffer from complicated architecture, energy inefficiencies, complex regulation, and competition with essential metabolic pathways for extender unit malonyl-CoA, all combining to limit the flux of polyketide biosynthesis. Here we show that certain thiolases, which we term polyketoacyl-CoA thiolases (PKTs), catalyse polyketide backbone formation via iterative non-decarboxylative Claisen condensations, hence offering a synthetic and effi- cient alternative to PKSs. We show that PKTs can synthesize polyketide backbones for representative lactone, alkylresorcinolic acid, alkylresorcinol, hydroxybenzoic acid and alkylphenol polyketide families, and elucidate the basic catalytic mechanism and structural features enabling this previously unknown activity. PKT-catalysed reactions offer a route to polyketide formation that leverages the simple architecture of thiolases to achieve higher ATP efficiencies and reduced competition with essential metabolic pathways, all of which circumvent intrinsic inefficiencies of PKSs for polyketide product synthesis. olyketides represent a large class of secondary metabolites that Here we show that enzymes other -
WO 2013/180584 Al 5 December 2013 (05.12.2013) P O P C T
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2013/180584 Al 5 December 2013 (05.12.2013) P O P C T (51) International Patent Classification: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, C12N 1/21 (2006.01) C12N 15/74 (2006.01) BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, C12N 15/52 (2006.01) C12P 5/02 (2006.01) DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, C12N 15/63 (2006.01) HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, (21) International Application Number: MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, PCT/NZ20 13/000095 OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, (22) International Filing Date: SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, 4 June 2013 (04.06.2013) TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (25) Filing Language: English (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, (26) Publication Language: English GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, (30) Priority Data: UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, 61/654,412 1 June 2012 (01 .06.2012) US TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, (71) Applicant: LANZATECH NEW ZEALAND LIMITED MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, [NZ/NZ]; 24 Balfour Road, Parnell, Auckland, 1052 (NZ). -
Novel Insights Into the Pathophysiology of Kidney Disease in Methylmalonic Aciduria
Zurich Open Repository and Archive University of Zurich Main Library Strickhofstrasse 39 CH-8057 Zurich www.zora.uzh.ch Year: 2017 Novel Insights into the Pathophysiology of Kidney Disease in Methylmalonic Aciduria Schumann, Anke Posted at the Zurich Open Repository and Archive, University of Zurich ZORA URL: https://doi.org/10.5167/uzh-148531 Dissertation Published Version Originally published at: Schumann, Anke. Novel Insights into the Pathophysiology of Kidney Disease in Methylmalonic Aciduria. 2017, University of Zurich, Faculty of Medicine. Novel Insights into the Pathophysiology of Kidney Disease in Methylmalonic Aciduria Dissertation zur Erlangung der naturwissenschaftlichen Doktorwürde (Dr. sc. nat.) vorgelegt der Mathematisch-naturwissenschaftlichen Fakultät der Universität Zürich von Anke Schumann aus Deutschland Promotionskommission Prof. Dr. Olivier Devuyst (Vorsitz und Leitung der Dissertation) Prof. Dr. Matthias R. Baumgartner Prof. Dr. Stefan Kölker Zürich, 2017 DECLARATION I hereby declare that the presented work and results are the product of my own work. Contributions of others or sources used for explanations are acknowledged and cited as such. This work was carried out in Zurich under the supervision of Prof. Dr. O. Devuyst and Prof. Dr. M.R. Baumgartner from August 2012 to August 2016. Peer-reviewed publications presented in this work: Haarmann A, Mayr M, Kölker S, Baumgartner ER, Schnierda J, Hopfer H, Devuyst O, Baumgartner MR. Renal involvement in a patient with cobalamin A type (cblA) methylmalonic aciduria: a 42-year follow-up. Mol Genet Metab. 2013 Dec;110(4):472-6. doi: 10.1016/j.ymgme.2013.08.021. Epub 2013 Sep 17. Schumann A, Luciani A, Berquez M, Tokonami N, Debaix H, Forny P, Kölker S, Diomedi Camassei F, CB, MK, Faresse N, Hall A, Ziegler U, Baumgartner M and Devuyst O. -
Test Catalog for Pharma
Test Catalog for Pharma Newborn Screening ………………………………………………………………………….. 2 Biochemical Genetic Testing ……………………………………………….. 2 Molecular Genetic Testing ……………………………………………………. 4 Genetic Testing …………………………………………………………………………………… 6 Molecular Genetic Testing ……………………………………………….….. 6 Biochemical Genetic Testing ……………………………………………….. 10 How to order? ………………………………………………………………………………..….. 11 1 Newborn Screening > Biochemical Genetic Testing StepOne® (Comprehensive with SCID) Fatty Acid Oxidation Disorders Organic Acid Disorders Amino Acid Disorders Carnitine/Acylcarnitine Translocase Deficiency 3-Hydroxy-3-Methylglutaryl-CoA Lyase Deficiency Argininemia Carnitine Palmitoyl Transferase Deficiency Type I1 Glutaric Acidemia Type I Argininosuccinic Aciduria 3-Hydroxy Long Chain Acyl-CoA Dehydrogenase Deficiency Isobutyryl-CoA Dehydrogenase Deficiency 5-Oxoprolinuria1 2,4-Dienoyl-CoA Reductase Deficiency1 Isovaleric Acidemia Carbamoyl Phosphate Synthetase Deficiency1 Medium Chain Acyl-CoA Dehydrogenase Deficiency 2-Methylbutyryl-CoA Dehydrogenase Deficiency Citrullinemia Multiple Acyl-CoA Dehydrogenase Deficiency 3-Methylcrotonyl-CoA Carboxylase Deficiency Homocystinuria Neonatal Carnitine Palmitoyl Transferase Deficiency Type II 3-Methylglutaconyl-CoA Hydratase Deficiency Hypermethioninemia Short Chain Acyl-CoA Dehydrogenase Deficiency Methylmalonic Acidemias Hyperammonemia, Hyperornithinemia, Homocitrullinuria Short Chain Hydroxy Acyl-CoA Dehydrogenase Deficiency Methylmalonyl-CoA Mutase Deficiency Syndrome1 Trifunctional Protein Deficiency Some Adenosylcobalamin -
Original Article Prevalence of Aminoacidurias in a Tertiary Care Pediatric Medical College Hospital J
DOI: 10.14260/jemds/2015/650 ORIGINAL ARTICLE PREVALENCE OF AMINOACIDURIAS IN A TERTIARY CARE PEDIATRIC MEDICAL COLLEGE HOSPITAL J. N. George1, A. Amaresh2, N. J. Gokula Kumari3 HOW TO CITE THIS ARTICLE: J. N. George, A. Amaresh, N. J. Gokula Kumari. “Prevalence of Aminoacidurias in a Tertiary Care Pediatric Medical College Hospital”. Journal of Evolution of Medical and Dental Sciences 2015; Vol. 4, Issue 26, March 30; Page: 4500-4508, DOI: 10.14260/jemds/2015/650 ABSTRACT: BACKGROUND: Inborn errors of metabolism (IEM) comprises of a diverse group of heterogeneous disorders manifesting in paediatric population. Cases of Inborn errors of metabolism, individually are rare but collectively are common. The timing of presentation depends on significant accumulation of toxic metabolites or on the deficiency of substrate. These disorders manifest by subtle neurologic or psychiatric features often go undiagnosed until adulthood. OBJECTIVES: The objectives of the present study was to carry out preliminary screening on urine samples from pediatric population with either metabolic or neurological manifestations for inborn errors of metabolism and to know the prevalence of aminoaciduria in tertiary care setup for early diagnosis and detection. METHODS: The present study is a cross sectional time bound study carried out at Niloufer Institute of Child Health, Osmania Medical College, Hyderabad, from August 2013 to July 2014. A total of 119 samples were analyzed from suspected cases of IEM. Samples were analyzed for all physical and chemical parameters and positive cases reported by these investigations were referred for confirmation by TMS, HPLC, and GCMS. RESULTS: Among 119 children analyzed, 29 were given presumptive diagnosis of IEM based on screening tests, urinary aminoacidogram by TLC and clinical correlation. -
Pathological Findings in Homocystinuria
J Clin Pathol: first published as 10.1136/jcp.17.4.427 on 1 July 1964. Downloaded from J. clin. Path. (1964), 17, 427 Pathological findings in homocystinuria J. B. GIBSON', NINA A. J. CARSON, AND D. W. NEILL2 From the Departments ofPathology and of Child Health, and the Biochemistry Laboratory, The Queen's University of Belfast, and Royal Belfast Hospitalfor Sick Children, and Royal Victoria Hospital, Belfast SYNOPSIS Pathological findings are described in four cases of a new aminoaciduria in which homocystine is excreted in the urine. All the patients were mentally retarded children. Three of them presented diagnostic features of Marfan's syndrome. Necropsy on one case and biopsy findings in the others are described. Fatty change occurs in the liver. The most striking lesions are vascular. Metachromatic medial degeneration of the aorta and of the elastic arteries in the necropsied case are considered in relation to Marfan's syndrome. Other changes, particularly thrombosis which is prevalent in homocystinuria, suggest the possibility of a platelet defect. The findings are discussed in respect of an upset in the metabolism of sulphur-containing amino-acids and with particular reference to Marfan's syndrome. A systematic search for metabolic abnormalities in Their appearance was that of Marfan's syndrome mentally retarded individuals in Northern Ireland and in fact two of them had been designated pre- revealed a hitherto unrecognized specific amino- viously as classical examples of Marfan's syndrome aciduria, in which the sulphur-containing amino- in published studies of that condition (case A4, acid homocystine is excreted (Carson and Neill, Lynas, 1958; case 4, Loughridge, 1959). -
A New Inborn Error of Metabolism Associated with Mental Deficiency
Arch Dis Child: first published as 10.1136/adc.38.201.425 on 1 October 1963. Downloaded from Arch. Dis. Childl., 1963, 38, 425. HOMOCYSTINURIA: A NEW INBORN ERROR OF METABOLISM ASSOCIATED WITH MENTAL DEFICIENCY BY NINA A. J. CARSON*, D. C. CUSWORTHt, C. E. DENTt, C. M. B. FIELD+, D. W. NEILL§ and R. G. WESTALLt From Royal Belfast Hospital for Sick Children, University College Hospital Medical School, London, Belfast City Hospital, and Royal Victoria Hospital, Belfast (RECEIVED FOR PUBLICATION MARCH 20, 1963) It is now becoming generally noted that many imagine that sooner or later similar metabolic diseases of hitherto unknown aetiology are due to disorders will be discovered that will involve the inborn errors of metabolism in the sense in which remaining amino acids. Garrod (1923) used this term. Although these The present study concerns a further presumed diseases cover the whole of medicine it has been inborn error of amino acid metabolism, this time particularly gratifying to note that mental disease, involving the sulphur-containing compound homo- especially mental deficiency which currently is cystine. The discovery arose from the submission responsible for one of our main medical problems, by one of us (C.M.B.F.) of urine from two mentally has been especially involved in these recent dis- retarded sibs whose clinical features were thought coveries. In particular, a number of inborn errors to suggest a possible metabolic basis. The urine of metabolism causing mental disease have been was sent for examination to others of us (N.A.J.C. described recently in which the disorder concerned and D.W.N.) who were currently running a meta- copyright. -
Amino Acids (Urine)
Amino Acids (Urine) A profile of amino acids is provided: alanine, -amino butyric acid, arginine, asparagine, aspartic acid, carnosine, citrulline, cystine, glutamic acid, glutamine, glycine, histidine, homocystine, hydroxylysine, isoleucine, leucine, Description lysine, methionine, 1-methyl histidine, 3-methyl histidine, ornithine, phenylalanine, phosphoethanolamine, proline, sarcosine, serine, taurine, threonine, tyrosine, tryptophan, valine. In general, urine is useful when investigating a disorder of renal transport particularly with a positive urine nitroprusside test eg for cystinuria and homocystinuria, nephrolithiasis and or the Fanconi syndrome. Other Indication reasons maybe selective metabolic screening, hyperammonaemia, suspected aminoacidopathy, suspected disorder of energy metabolism, epileptic encephalopathy, control of protein restricted diet. Functions of amino acids include the basic structural units of proteins, metabolic intermediates and neurotransmission. Over 95% of the amino acid load filtered from the blood at the renal glomerulus is normally reabsorbed in the proximal Additional Info renal tubules by saturable transport systems. The term ‘aminoaciduria’ is used when more than 5% of the filtered load is detected in the urine. In normal individuals, aminoaciduria is transient and is associated with protein intake in excess of amino acid requirements. Concurrent Tests Plasma amino acids Dietary Requirements N/A Values depend on metabolic state. Cystinuria: Increased urinary cystine, lysine, arginine and ornithine. Interpretation Homocystinuria: Increased urinary homocysteine and methionine. Fanconi syndrome: Generalised increase in urinary amino acid excretion. Collection Conditions No restrictions. Repeat measurement inappropriate except in acute Frequency of testing presentation of undiagnosed suspected metabolic disorder. Version 1 Date: 25/01/11 Document agreed by: Dr NB Roberts . -
Laboratory Diagnostic Approaches in Metabolic Disorders
470 Review Article on Inborn Errors of Metabolism Page 1 of 14 Laboratory diagnostic approaches in metabolic disorders Ruben Bonilla Guerrero1, Denise Salazar2, Pranoot Tanpaiboon2,3 1Formerly Quest Diagnostics, Inc., Ruben Bonilla Guerrero, Rancho Santa Margarita, CA, USA; 2Quest Diagnostics, Inc., Denise Salazar and Pranoot Tanpaiboon, San Juan Capistrano, CA, USA; 3Genetics and Metabolism, Children’s National Rare Disease Institute, Washington, DC, USA Contributions: (I) Conception and design: All authors; (II) Administrative support: R Bonilla Guerrero; (III) Provision of study materials or patients: All authors; (IV) Collection and assembly of data: All authors; (V) Data analysis and interpretation: None; (VI) Manuscript writing: All authors; (VII) Final approval of manuscript: All authors. Correspondence to: Ruben Bonilla Guerrero. Formerly Quest Diagnostics, Inc., Ruben Bonilla Guerrero, 508 Sable, Rancho Santa Margarita, CA 92688, USA. Email: [email protected]. Abstract: The diagnosis of inborn errors of metabolism (IEM) takes many forms. Due to the implementation and advances in newborn screening (NBS), the diagnosis of many IEM has become relatively easy utilizing laboratory biomarkers. For the majority of IEM, early diagnosis prevents the onset of severe clinical symptoms, thus reducing morbidity and mortality. However, due to molecular, biochemical, and clinical variability of IEM, not all disorders included in NBS programs will be detected and diagnosed by screening alone. This article provides a general overview and simplified guidelines for the diagnosis of IEM in patients with and without an acute metabolic decompensation, with early or late onset of clinical symptoms. The proper use of routine laboratory results in the initial patient assessment is also discussed, which can help guide efficient ordering of specialized laboratory tests to confirm a potential diagnosis and initiate treatment as soon as possible. -
Fatty Acid Degradation Monounsaturated Fatty Acids
BI/CH 422/622 OUTLINE: OUTLINE: Lipid Degradation (Catabolism) Protein Degradation (Catabolism) FOUR stages in the catabolism of lipids: Digestion Mobilization from tissues (mostly adipose) Inside of cells hormone regulated Protein turnover specific lipases Ubiquitin glycerol Proteosome Activation of fatty acids Amino-Acid Degradation Fatty-acyl CoA Synthetase Transport into mitochondria carnitine Oxidation rationale Saturated FA 4 steps dehydrogenation hydration oxidation thiolase energetics Unsaturated FA Odd-chain FA Ketone Bodies Other organelles Fatty Acid Degradation Monounsaturated Fatty Acids cis trans During first of five ⦚ ⦚ ⦚ ⦚ ⦚ remaining cycles, acyl- CoA dehydrogenase step is skipped, resulting in 1 fewer FADH2. 1 Fatty Acid Degradation Energy from Fatty Acid Catabolism TABLE 17-1a Yield of ATP during Oxidation of One Molecule of PalmitoylOleoyl--CoA to CO2 and H2O Number of NADH or Number of ATP a Enzyme catalyzing the oxidation step FADH2 formed ultimately formed β Oxidation Acyl-CoA dehydrogenase 7 FADH2 10.5 β-Hydroxyacyl-CoA dehydrogenase 8 NADH 20 Citric acid cycle 35 à87.5 ATP Isocitrate dehydrogenase 9 NADH 22.5 α-Ketoglutarate dehydrogenase 9 NADH 22.5 Succinyl-CoA synthetase 16 9b Succinate dehydrogenase à24 ATP 9 FADH2 13.5 Malate dehydrogenase 9 NADH 22.5 Total 120.5 – 2 = 118.5* aThese calculations assume that mitochondrial oxidative phosphorylation produces 1.5 ATP per FADH2 oxidized and 2.5 ATP per NADH oxidized. bGTP produced directly in this step yields ATP in the reaction catalyzed by nucleoside diphosphate kinase (p. 516). *These 2 ”ATP” equivalents were expended in the activation by Fatty acyl–CoA synthetase. Fatty Acid Degradation Oxidation of Polyunsaturated Fatty Acids Results in 1 fewer FADH2 after isomerization, as the acyl-CoA dehydrogenase step is skipped and goes right to the hydratase.