Determination of Pk, Values of the Histidine Side
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Ribonuclease A: Disulfide Bonds, Conformational Stability, and Cytotoxicity
Ribonuclease A: Disulfide Bonds, Conformational Stability, and Cytotoxicity by Tony A. Klink A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy (Biochemistry) at the UNIVERSITY OF WISCONSIN-MADISON 2()()() r OJ A dissertation entitled Ribonuclease A: Disulfide Bonds, Conformational Stability and Cytotoxicity submitted to the Graduate School of the University of Wisconsin-Madison in partial fulfillment of the requirements for the degree of Doctor of Philosophy by Tony Anthony Klink Date of Final Oral Examination: August 4, 2000 Month & Year Degree to be awarded: December May August 2000 • * * * * * * • * * • * • • • • • * • • • * • • • • • • • • • • • • • * * • * • * * * • * • * • • • • • • * App oval Signature. f Dissertation Readers: Signature, Dean of Graduate School ---..., v.C~vJ,1A. 5. lJ,~k;at 1 Abstract Disulfide bonds between the side chains of cysteine residues are the only common cross links in proteins. Bovine pancreatic ribonuclease A (RNase A) is a 124-residue enzyme that contains four interweaving disulfide bonds (Cys26-Cys84, Cys40-Cys95, Cys58-CysllO, and Cys65-Cys72) and catalyzes the cleavage of RNA. The contribution of each disulfide bond to the confonnational stability and catalytic activity of RNase A was detennined using variants in which each cystine was replaced independently with a pair of alanine residues. Of the four disulfide bonds, the Cys40-Cys95 and Cys65-Cys72 cross-links are the least important to confonnational stability. Removing these disulfide bonds leads to RNase A variants that have Tm values below that of the wild-type enzyme but above physiological temperature. Unlike wild-type RNase A. G88R RNase A is toxic to cancer cells. To investigate the relationship between conformational stability and cytotoxicity, the C40AlC95A and C65A1C72A variants were made in the G88R background. -
Families and the Structural Relatedness Among Globular Proteins
Protein Science (1993), 2, 884-899. Cambridge University Press. Printed in the USA. Copyright 0 1993 The Protein Society -~~ ~~~~ ~ Families and the structural relatedness among globular proteins DAVID P. YEE AND KEN A. DILL Department of Pharmaceutical Chemistry, University of California, San Francisco, California94143-1204 (RECEIVEDJanuary 6, 1993; REVISEDMANUSCRIPT RECEIVED February 18, 1993) Abstract Protein structures come in families. Are families “closely knit” or “loosely knit” entities? We describe a mea- sure of relatedness among polymer conformations. Based on weighted distance maps, this measure differs from existing measures mainly in two respects: (1) it is computationally fast, and (2) it can compare any two proteins, regardless of their relative chain lengths or degree of similarity. It does not require finding relative alignments. The measure is used here to determine the dissimilarities between all 12,403 possible pairs of 158 diverse protein structures from the Brookhaven Protein Data Bank (PDB). Combined with minimal spanning trees and hier- archical clustering methods,this measure is used to define structural families. It is also useful for rapidly searching a dataset of protein structures for specific substructural motifs.By using an analogy to distributions of Euclid- ean distances, we find that protein families are not tightly knit entities. Keywords: protein family; relatedness; structural comparison; substructure searches Pioneering work over the past 20 years has shown that positions after superposition. RMS is a useful distance proteins fall into families of related structures (Levitt & metric for comparingstructures that arenearly identical: Chothia, 1976; Richardson, 1981; Richardson & Richard- for example, when refining or comparing structures ob- son, 1989; Chothia & Finkelstein, 1990). -
Rnase 2 Sirna (H): Sc-92235
SANTA CRUZ BIOTECHNOLOGY, INC. RNase 2 siRNA (h): sc-92235 BACKGROUND PRODUCT RNase 2 [ribonuclease, RNase A family, 2 (liver, eosinophil-derived neuro- RNase 2 siRNA (h) is a pool of 2 target-specific 19-25 nt siRNAs designed toxin)], also known as non-secretory ribonuclease, EDN (eosinophil-derived to knock down gene expression. Each vial contains 3.3 nmol of lyophilized neurotoxin), RNase UpI-2 or RNS2, is a 161 amino acid protein that belongs siRNA, sufficient for a 10 µM solution once resuspended using protocol to the pancreatic ribonuclease family. Localizing to lysosome and cytoplasmic below. Suitable for 50-100 transfections. Also see RNase 2 shRNA granules, RNase 2 is expressed in leukocytes, liver, spleen, lung and body Plasmid (h): sc-92235-SH and RNase 2 shRNA (h) Lentiviral Particles: fluids. RNase 2 functions as a pyrimidine specific nuclease, and has a slight sc-92235-V as alternate gene silencing products. preference for uracil. RNase 2 is capable of various biological activities, For independent verification of RNase 2 (h) gene silencing results, we including mediation of chemotactic activity and endonucleolytic cleavage of also provide the individual siRNA duplex components. Each is available as nucleoside 3'-phosphates and 3'-phosphooligonucleotides. The gene encoding 3.3 nmol of lyophilized siRNA. These include: sc-92235A and sc-92235B. RNase 2 maps to human chromosome 14q11.2. STORAGE AND RESUSPENSION REFERENCES Store lyophilized siRNA duplex at -20° C with desiccant. Stable for at least 1. Yasuda, T., Sato, W., Mizuta, K. and Kishi, K. 1988. Genetic polymorphism one year from the date of shipment. -
Structures, Functions, and Mechanisms of Filament Forming Enzymes: a Renaissance of Enzyme Filamentation
Structures, Functions, and Mechanisms of Filament Forming Enzymes: A Renaissance of Enzyme Filamentation A Review By Chad K. Park & Nancy C. Horton Department of Molecular and Cellular Biology University of Arizona Tucson, AZ 85721 N. C. Horton ([email protected], ORCID: 0000-0003-2710-8284) C. K. Park ([email protected], ORCID: 0000-0003-1089-9091) Keywords: Enzyme, Regulation, DNA binding, Nuclease, Run-On Oligomerization, self-association 1 Abstract Filament formation by non-cytoskeletal enzymes has been known for decades, yet only relatively recently has its wide-spread role in enzyme regulation and biology come to be appreciated. This comprehensive review summarizes what is known for each enzyme confirmed to form filamentous structures in vitro, and for the many that are known only to form large self-assemblies within cells. For some enzymes, studies describing both the in vitro filamentous structures and cellular self-assembly formation are also known and described. Special attention is paid to the detailed structures of each type of enzyme filament, as well as the roles the structures play in enzyme regulation and in biology. Where it is known or hypothesized, the advantages conferred by enzyme filamentation are reviewed. Finally, the similarities, differences, and comparison to the SgrAI system are also highlighted. 2 Contents INTRODUCTION…………………………………………………………..4 STRUCTURALLY CHARACTERIZED ENZYME FILAMENTS…….5 Acetyl CoA Carboxylase (ACC)……………………………………………………………………5 Phosphofructokinase (PFK)……………………………………………………………………….6 -
Purification and Characterization of Cutinase from Venturia Inaequalis
Physiology and Biochemistry Purification and Characterization of Cutinase from Venturia inaequalis Wolfram K611er and Diana M. Parker Assistant professor and research assistant, Department of Plant Pathology, Cornell University, New York State Agricultural Experiment Station, Geneva 14456. We thank Professor A. L. Jones for the isolates of Venturia inaequalis, Mr. Robert W. Ennis, Jr. for his help in cutin preparation, and Comstock Foods, Alton, NY, for the apple peels. Accepted for publication 16 August 1988. ABSTRACT K61ler, W., and Parker, D. M. 1989. Purification and characterization of cutinase from Venturia inaequalis. Phytopathology 79:278-283. Venturia inaequalis was grown in a culture medium containing purified cutinase from V. inaequalisis optimal at a pH of 6 and thus different from apple cutin as the sole carbon source. After 8 wk of growth an esterase was the alkaline pH-optimum reported for other purified cutinases. The isolated from the culture fluid and purified to apparent homogeneity. The hydrolysis of the model esterp-nitrophenyl butyrate was less affected by the enzyme hydrolyzed tritiated cutin and thus was identified as cutinase. The pH. The esterase activity was strongly inhibited by diisopropyl purified cutinase is a glycoprotein with a molecular mass of 21-23 kg/ mol, fluorophosphate, and the phosphorylation of one serine was sufficient for as determined by various procedures. Remarkable structural features are a complete inhibition. Thus, cutinase from V. inaequalis belongs to the class high content of glycine, a high content of nonpolar amino acids, two of serine hydrolases, a characterisitic shared with other fungal cutinases. disulfide bridges, and a high degree of hydrophobicity. -
Ribonuclease A
Chem. Rev. 1998, 98, 1045−1065 1045 Ribonuclease A Ronald T. Raines Departments of Biochemistry and Chemistry, University of WisconsinsMadison, Madison, Wisconsin 53706 Received October 10, 1997 (Revised Manuscript Received January 12, 1998) Contents I. Introduction 1045 II. Heterologous Production 1046 III. Structure 1046 IV. Folding and Stability 1047 A. Disulfide Bond Formation 1047 B. Prolyl Peptide Bond Isomerization 1048 V. RNA Binding 1048 A. Subsites 1048 B. Substrate Specificity 1049 C. One-Dimensional Diffusion 1049 D. Processive Catalysis 1050 VI. Substrates 1050 VII. Inhibitors 1051 Ronald T. Raines was born in 1958 in Montclair, NJ. He received Sc.B. VIII. Reaction Mechanism 1052 degrees in chemistry and biology from the Massachusetts Institute of A. His12 and His119 1053 Technology. At M.I.T., he worked with Christopher T. Walsh to reveal the reaction mechanisms of pyridoxal 5′-phosphate-dependent enzymes. B. Lys41 1054 Raines was a National Institutes of Health predoctoral fellow in the C. Asp121 1055 chemistry department at Harvard University. There, he worked with D. Gln11 1056 Jeremy R. Knowles to elucidate the reaction energetics of triosephosphate IX. Reaction Energetics 1056 isomerase. Raines was a Helen Hay Whitney postdoctoral fellow in the biochemistry and biophysics department at the University of California, A. Transphosphorylation versus Hydrolysis 1056 San Francisco. At U.C.S.F., he worked with William J. Rutter to clone, B. Rate Enhancement 1057 express, and mutate the cDNA that codes for ribonuclease A. Raines X. Ribonuclease S 1058 then joined the faculty of the biochemistry department at the University s A. S-Protein−S-Peptide Interaction 1058 of Wisconin Madison, where he is now associate professor of biochem- istry and chemistry. -
Genomics of an Extreme Psychrophile, Psychromonas
BMC Genomics BioMed Central Research article Open Access Genomics of an extreme psychrophile, Psychromonas ingrahamii Monica Riley*1, James T Staley2, Antoine Danchin3, Ting Zhang Wang3, Thomas S Brettin4, Loren J Hauser5, Miriam L Land5 and Linda S Thompson4 Address: 1Bay Paul Center, Marine Biological Laboratory, Woods Hole, MA 02543, USA, 2University of Washington, Seattle, WA 98195-7242, USA, 3Genetics of Bacterial Genomes, CNRS URA2171, Institut Pasteur, 28 rue du Dr Roux, 75015 Paris, France, 4DOE Joint Genome Institute, Bioscience Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA and 5Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA Email: Monica Riley* - [email protected]; James T Staley - [email protected]; Antoine Danchin - [email protected]; Ting Zhang Wang - [email protected]; Thomas S Brettin - [email protected]; Loren J Hauser - [email protected]; Miriam L Land - [email protected]; Linda S Thompson - [email protected] * Corresponding author Published: 6 May 2008 Received: 3 September 2007 Accepted: 6 May 2008 BMC Genomics 2008, 9:210 doi:10.1186/1471-2164-9-210 This article is available from: http://www.biomedcentral.com/1471-2164/9/210 © 2008 Riley et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Background: The genome sequence of the sea-ice bacterium Psychromonas ingrahamii 37, which grows exponentially at -12C, may reveal features that help to explain how this extreme psychrophile is able to grow at such low temperatures. -
Ribonuclease A: Exploring the Function of the Active-Site Lysine
Ribonuclease A: Exploring the Function of the Active-Site Lysine Residue in Catalysis and Inhibition By June M. Messmore A dissertation submitted in partial fulfillment of the degree of Doctor of Philosophy (Biochemistry) UNIVERSITY OF WISCONSIN-MADISON 1999 A dissertation entitled Ribonuclease A: Exploring the Function of the Active-Site Lysine Residue in Catalysis and Inhibition submitted to the Graduate School of the University of Wisconsin-Madison Jp'part.i~l f~lfillment of ~~ereq~ire~~nt$ for the degree of Doctor·of Philosophy by June M. Messmore Degree to be awarded: December 19_ May 19_ August 19~ th May 28 , 1999 Date of Examination . ~ r:i~ b lli{\~~ Dean. Graduate School 1 Ribonuclease A: Exploring the Function of an Active-Site Lysine in Catalysis and Inhibition June M. Messmore Under the supervision of Professor Ronald T. Raines at the University of Wisconsin-Madison ABSTRACT Structural analyses had suggested that the active-site lysine residue of RNase A (Lys41) may interact preferentially with the transition state for covalent bond cleavage, thus facilitating catalysis. Site-directed mutagenesis and chemical modification were combined (1) to probe the role of Lys41 in catalysis, (2) to provide a chemical on/off switch for RNase A activity in in vitro applications, and (3) to probe the analogy ofuridine 2',3'-cyclic vanadate to the catalytic transition state. In addition to studying inhibition by the uridine vanadate, inhibition by a polyvanadate species was also characterized. Results indicate the importance of positive charge and the donation of a single hydrogen bond in catalysis. Chemical modification can reversibly modulate the activity of ribonuclease by a factor of 30,000. -
Hypoxic Regulation of the 6-Phosphofructo-2-Kinase/Fructose
FEBS Letters 554 (2003) 264^270 FEBS 27797 CORE Metadata, citation and similar papers at core.ac.uk Provided by Elsevier -Hypoxic Publisher Connector regulation of the 6-phosphofructo-2-kinase/fructose-2,6- bisphosphatase gene family (PFKFB-1^4) expression in vivo Oleksandr Minchenkoa;b, Iryna Opentanovaa, Jaime Carob;Ã aDepartment of Molecular Biology, Institute of Biochemistry, National Academy of Science of Ukraine, Kyiv 01601, Ukraine bCardeza Foundation for Hematologic Research, Department of Medicine, Je¡erson Medical College of Thomas Je¡erson University, Curtis Bldg. 810, 1015 Walnut Street, Philadelphia, PA 19107, USA Received 12 May 2003; revised 10 September 2003; accepted 6 October 2003 First published online 21October 2003 Edited by Vladimir Skulachev 1. Introduction Abstract When oxygen becomes limiting, cells shift primarily to a glycolytic mode for generation of energy. A key regulator of glycolytic £ux is fructose-2,6-bisphosphate (F-2,6-BP), a po- The ability to respond to hypoxia is an essential evolution- tent allosteric regulator of 6-phosphofructo-1-kinase (PFK-1). ary adaptation in higher vertebrates. Hypoxia could be caused The levels of F-2,6-BP are maintained by a family of bifunc- by a generalized reduction in oxygen delivery, such as in alti- tional enzymes, 6-phosphofructo-2-kinase/fructose-2,6-bisphos- tude and pulmonary diseases, or by disruption in the local phatase (PFKFBor PFK-2), which have both kinase and phos- blood supply, such as in ischemic disorders. Important in phatase activities. Each member of the enzyme family is the adaptations to hypoxia is the activation of genes that characterized by their phosphatase:kinase activity ratio (K:B) ameliorate or compensate for the oxygen de¢cit. -
United States Patent (19) 11) 4,039,382 Thang Et Al
United States Patent (19) 11) 4,039,382 Thang et al. 45 Aug. 2, 1977 54 MMOBILIZED RIBONUCLEASE AND -Enzyme Systems, Journal of Food Science, vol. 39, ALKALINE PHOSPHATASE 1974, (pp. 647-652). 75 Inventors: Minh-Nguy Thang, Bagneux; Annie Zaborsky, O., Immobilized Enzymes, CRC Press, Guissani born Trachtenberg, Fresnes, Cleveland, Ohio, 1973, (pp. 124-126). both of France Primary Examiner-David M. Naff 73 Assignee: Choay S. A., Paris, France Attorney, Agent, or Firm-Browdy and Neimark 21 Appl. No.: 678,459 22 Filed: Apr. 19, 1976 57 ABSTRACT An insoluble, solid matrix carrying simultaneously sev 30 Foreign Application Priority Data eral different enzymatic functions, is constituted by the Apr. 23, 1975 France ................................ 75.12667 conjoint association by irreversible binding on a previ ously activated matrix support, of a nuclease selected 51) int. Cl? ........................... C07G 7/02; C12B 1/00 from the group of ribonucleases A, T, T, U, and an 52 U.S. Cl. ................................... 195/28 N; 195/63; alkaline phosphatease. Free activated groups of the 195/68; 195/DIG. 11; 195/116 matrix after binding of the enzymes, are neutralized by 58 Field of Search ................... 195/63, 68, DIG. 11, a free amino organic base. The support is selected from 195/116, 28 N among non-denaturing supports effecting the irrevers 56) References Cited ible physical adsorption of the enzymes, such as sup ports of glass or quartz beads, highly cross-linked gels PUBLICATIONS of the agarose or cellulose type. Polymers AUott, A. Lee, J. C., Preparation and Properties of Water Insolu Cott, AGot and/or oligonucleotides U, C, A or G, of ble Derivatives of Ribonuclease Ti. -
Apr 1 0 1981 Ubraries 2
Mechanism of DNA Chain Initiation by the dnaG Protein of Escherichia coli by Daniel Jeffrey Capon B.S., Massachusetts Institute of Technology (1976) SUBMITTED IN PARTIAL FULFILL1ENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY January 1981 0) Massachusetts Institute of Technology 1981 Signature of Author__ %A~A(Departjent of Biology Certified by A U Thesis Supervisor Accepted by ~'RCHIVES Chairman, Departmental Committee MASSACHUSM INSTiTUTE OF TECHNOL1Y APR 1 0 1981 UBRARIES 2 Mechanism of DNA Chain Initiation by the dnaG protein of Escherichia coli by Daniel Jeffrey Capon Submitted to the Department of Biology on January 28, 1981 in partial fulfillment of the requirements for the degree of Doctor of Philosophy ABSTRACT All known DNA polymerases are unable to initiate the synthesis of DNA chains de novo, but are capable of extending the 3' hydroxy terminus of a preexisting 'primer' chain stably annealed to the template strand. The report that partially purified preparations of the dnaG protein, a gene product essential to the replication of E. coli, synthesize RNA primers on phage G4 single-stranded DNA (Bouche, Zechel and Kornberg, 1975) stimulated an investigation into the properties of this enzyme. A thermolabile dnaG protein, prepared from a temperature-sensitive strain of E. coli, was utilized to demonstrate that the ability to prime DNA synthelsis on phage G4 and 0x174 single-stranded DNA resides with the dnaG protein, and that the priming event may be separated from subsequent DNA synthesis. Priming on G4 DNA absolutely requires the E. coli DNA binding protein. -
The Characterization of Oligonucleotides and Nucleic Acids Using Ribonuclease H and Mass Spectrometry
Louisiana State University LSU Digital Commons LSU Historical Dissertations and Theses Graduate School 1999 The hC aracterization of Oligonucleotides and Nucleic Acids Using Ribonuclease H and Mass Spectrometry. Lenore Marie Polo Louisiana State University and Agricultural & Mechanical College Follow this and additional works at: https://digitalcommons.lsu.edu/gradschool_disstheses Recommended Citation Polo, Lenore Marie, "The hC aracterization of Oligonucleotides and Nucleic Acids Using Ribonuclease H and Mass Spectrometry." (1999). LSU Historical Dissertations and Theses. 6923. https://digitalcommons.lsu.edu/gradschool_disstheses/6923 This Dissertation is brought to you for free and open access by the Graduate School at LSU Digital Commons. It has been accepted for inclusion in LSU Historical Dissertations and Theses by an authorized administrator of LSU Digital Commons. For more information, please contact [email protected]. INFORMATION TO USERS This manuscript has been reproduced from the microfilm master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter free, while others may be from any type of computer printer. 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 bleedthrough, substandard margins, and improper alignment can adversely affect reproduction. In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion. Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand corner and continuing from left to right in equal sections with small overlaps.