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Articles 1 - 12 of 12
Full-Text Articles in Molecular Biology
Anaerobic Protoporphyrin Biosynthesis Does Not Require Incorporation Of Methyl Groups From Methionine, David Bollivar
Anaerobic Protoporphyrin Biosynthesis Does Not Require Incorporation Of Methyl Groups From Methionine, David Bollivar
Scholarship
No abstract provided.
The Cytoplasmic Tail Domain Of The Vacuolar Protein Sorting Receptor Vps10p And A Subset Of Vps Gene Products Regulate Receptor Stability, Function, And Localization, Joan Lin-Cereghino, Eric G. Marcusson, Scott D. Emr
The Cytoplasmic Tail Domain Of The Vacuolar Protein Sorting Receptor Vps10p And A Subset Of Vps Gene Products Regulate Receptor Stability, Function, And Localization, Joan Lin-Cereghino, Eric G. Marcusson, Scott D. Emr
College of the Pacific Faculty Articles
VPS10 of Saccharomyces cerevisiae encodes a type I transmembrane receptor protein required for the sorting of the soluble vacuolar hydrolase carboxypeptidase Y (CPY). To characterize the essential structural features and intercompartmental transport itinerary of the CPY receptor, we have constructed mutant forms of Vps10p that alter the carboxyterminal cytoplasmic tail of the protein. In addition, we have analyzed the effect these mutations as well as mutations in several VPS genes have on the function, stability, and localization of Vps10p. Although wild-type Vps10p is very stable over a 3-h chase period, overproduction of Vps10p results in PEP4-dependent degradation of the receptor. …
The Crystal Structure Of Recombinant Human Neutrophil-Activating Peptide-2 (M6l) At 1.9-Å Resolution, Michael G. Malkowski, Jean Yang Wu, Jerome B. Lazar, Paul H. Johnson, Brian Fp Edwards
The Crystal Structure Of Recombinant Human Neutrophil-Activating Peptide-2 (M6l) At 1.9-Å Resolution, Michael G. Malkowski, Jean Yang Wu, Jerome B. Lazar, Paul H. Johnson, Brian Fp Edwards
Biochemistry and Molecular Biology Faculty Publications
Neutrophil-activating peptide-2 (NAP-2) is a 70-residue carboxyl-terminal fragment of platelet basic protein, which is found in the a-granules of human platelets. NAP-2, which belongs to the CXC family of chemokines that includes Interleukin-B and platelet factor 4, binds to the interleukin-8 type II receptor and induces a rise in cytosolic calcium, chemotaxis of neutrophils, and exocytosis. Crystals of recombinant NAP-2 in which the single methionine at position 6 was replaced by leucine to facilitate expression belong to space group PI (unit cell parameters a = 40.8, b = 43.8, and c = 44.7 A and a = 98.4°, fl = …
Myasthenia Gravis-Like Syndrome Induced By Expression Of Interferon Gamma In The Neuromuscular Junction., Danling Gu, Lise Wogensen, Nigel A. Calcutt, Chunyao Xia, Simin Zhu, John P. Merlie, Howard S. Fox, Jon Lindstrom, Henry C. Powell, Nora Sarvetnick
Myasthenia Gravis-Like Syndrome Induced By Expression Of Interferon Gamma In The Neuromuscular Junction., Danling Gu, Lise Wogensen, Nigel A. Calcutt, Chunyao Xia, Simin Zhu, John P. Merlie, Howard S. Fox, Jon Lindstrom, Henry C. Powell, Nora Sarvetnick
Journal Articles: Regenerative Medicine
Abnormal humoral responses toward motor end plate constituents in muscle induce myasthenia gravis (MG). To study the etiology of this disease, and whether it could be induced by host defense molecules, we examined the consequences of interferon (IFN) gamma production within the neuromuscular junction of transgenic mice. The transgenic mice exhibited gradually increasing muscular weakness, flaccid paralysis, and functional disruption of the neuromuscular junction that was reversed after administration of an inhibitor of acetylcholinesterase, features which are strikingly similar to human MG. Furthermore, histological examination revealed infiltration of mononuclear cells and autoantibody deposition at motor end plates. Immunoprecipitation analysis indicated …
Sensitization To Self (Virus) Antigen By In Situ Expression Of Murine Interferon-Gamma., Myung-Shik Lee, Matthias Von Herrath, Hans Reiser, Michael B.A. Oldstone, Nora Sarvetnick
Sensitization To Self (Virus) Antigen By In Situ Expression Of Murine Interferon-Gamma., Myung-Shik Lee, Matthias Von Herrath, Hans Reiser, Michael B.A. Oldstone, Nora Sarvetnick
Journal Articles: Regenerative Medicine
Autoimmune disease results from inflammatory destruction of tissues by aberrant self-reactive lymphocytes. We studied the autoimmune potential of T lymphocytes immunologically ignorant of viral antigens acting as self antigens and whether the host defense molecule IFN-gamma could stimulate these cells to cytotoxic competency. For this purpose, we produced double transgenic mice expressing pancreatic IFN-gamma as well as lymphocytic choriomeningitis virus (LCMV) nucleoprotein (NP) or glycoprotein (GP) antigen. 100% of the NP+/IFN-gamma+ mice became diabetic before 2 mo of age, while none of the NP single transgenic littermates and only 10% of IFN-gamma single transgenic littermates did. Strikingly, NP+/IFN-gamma+ mice spontaneously …
Formation Of The Isocyclic Ring Of Chlorophyll By Isolated Clamydomonas Reinhardtii Chloroplasts, David Bollivar
Formation Of The Isocyclic Ring Of Chlorophyll By Isolated Clamydomonas Reinhardtii Chloroplasts, David Bollivar
Scholarship
No abstract provided.
Complementary Gradients In Expression And Binding Of Elf-1 And Mek4 In Development Of The Topographic Retinotectal Projection Map, Masaru Nakamoto
Complementary Gradients In Expression And Binding Of Elf-1 And Mek4 In Development Of The Topographic Retinotectal Projection Map, Masaru Nakamoto
Biology Faculty Publications
Topographic maps with a defined spatial ordering of neuronal connections are a key feature of brain organization. Such maps are believed to develop in response to complementary position-specific labels in presynaptic and postsynaptic fields. However, the complementary labeling molecules are not known. In the well studied visual map of retinal axons projecting to the tectum, the labels are hypothesized to be in gradients, without needing large numbers of cell-specific molecules. We recently cloned ELF-1 as a ligand for Eph family receptors. Here, RNA hybridization shows matching expression gradients for ELF-1 in the tectum and its receptor Mek4 in the retina. …
A Small Modified Hammerhead Ribozyme And Its Conformational Characteristics Determined By Mutagenesis And Lattice Calculation, Brooke Lustig, N H. Lin, S M. Smith, R L. Jernigan, K.-T Jeang
A Small Modified Hammerhead Ribozyme And Its Conformational Characteristics Determined By Mutagenesis And Lattice Calculation, Brooke Lustig, N H. Lin, S M. Smith, R L. Jernigan, K.-T Jeang
Faculty Publications, Chemistry
A prototypic hammerhead ribozyme has three helices that surround an asymmetrical central core loop. We have mutagenized a hammerhead type ribozyme. In agreement with previous studies, progressive removal of stem-loop II from a three stemmed ribozyme showed that this region is not absolutely critical for catalysis. However, complete elimination of stem II and its loop did reduce, but did not eliminate, function. In a stem-loop II-deleted ribozyme, activity was best preserved when a purine, preferably a G, was present at position 10.1. This G contributed to catalysis irregardless of its role as either one part of a canonical pair with …
Biotransformation Of Bile Acids, Cholesterol And Steroids. Chapter 13 In: The Ecology And Physiology Of Gastrointestinal Microbes. Vol. 1, New York, Chapman And Hall., Stephen Baron, Phillip B. Hylemon
Biotransformation Of Bile Acids, Cholesterol And Steroids. Chapter 13 In: The Ecology And Physiology Of Gastrointestinal Microbes. Vol. 1, New York, Chapman And Hall., Stephen Baron, Phillip B. Hylemon
Biology Faculty Scholarship
No abstract provided.
Activation Of Transfer Rna-Guanine Ribosyltransferase By Protein Kinase C, Rana C. Morris, Bonnie J. Brooks, Panayota Eriotou, Deborah F. Kelly, Sandeep Sagar, K. Lenore Hart, Mark S. Elliot
Activation Of Transfer Rna-Guanine Ribosyltransferase By Protein Kinase C, Rana C. Morris, Bonnie J. Brooks, Panayota Eriotou, Deborah F. Kelly, Sandeep Sagar, K. Lenore Hart, Mark S. Elliot
Chemistry & Biochemistry Faculty Publications
Transfer RNA-guanine ribosyltransferase (TGRase) irreversibly incorporates queuine into the first position in the anticodon of four tRNA isoacceptors. Rat brain protein kinase C (PKC) was shown to stimulate rat liver TG Rase activity, TGRase preparations derived from rat liver have been observed to decrease in activity over time in storage at -20 or -70°C, Contamination of the samples by phosphatases was indicated by a p-nitrophenylphosphate conversion test, The addition of micromolar concentrations of the phosphatase inhibitors sodium pyrophosphate and sodium fluoride into TGRase isolation buffers resulted in a greater return of TGRase activity than without these inhibitors, Inactive TGRase preparations …
Consistencies Of Individual Dna Base-Amino Acid Interactions In Structures And Sequences, Brooke Lustig, R L. Jernigan
Consistencies Of Individual Dna Base-Amino Acid Interactions In Structures And Sequences, Brooke Lustig, R L. Jernigan
Faculty Publications, Chemistry
Amino acid-amino acid interaction energies have been derived from crystal structure data for a number of years. Here is reported the first derivation of normalized relative interaction from binding data for each of the four bases interacting with a specific amino acid, utilizing data from combinatorial multiplex ONA binding of zinc finger domains [Desjarlais, J. R. and Berg, J. M. (1994) Proc. Natl. Acad. Sci. USA, 91, 11099–11103]. The five strongest Interactions are observed for lysine-guanine, lysine-thymine, arginine- guanine, aspartic acid-cytosine and asparagineadenine. These rankings for interactions with the four bases appear to be related to base-amino acid partial charges. …
Molecular Cloning And Rare Cleavage Mapping Of Human 2p, 6q, 8q, 12q, And 18q Telomeres, Roberto A. Macina, Ken Morii, Xue-Lan Hu, Dimitri G. Negorev, Chrysanthe Spais, Lisa A. Ruthig, Harold C. Riethman
Molecular Cloning And Rare Cleavage Mapping Of Human 2p, 6q, 8q, 12q, And 18q Telomeres, Roberto A. Macina, Ken Morii, Xue-Lan Hu, Dimitri G. Negorev, Chrysanthe Spais, Lisa A. Ruthig, Harold C. Riethman
Medical Diagnostics & Translational Sciences Faculty Publications
Large terminal fragments of human chromosomes 2p, 6q, 8q, 12q, and 18q were cloned using yeast artificial chromosomes (YACs). RecA-assisted restriction endonuclease (RARE) cleavage analysis of genomic DNA samples from 11 unrelated individuals using YAC-derived probes confirmed the telomeric localizations of the half-YACs studied. The cloned Fragments provide telomeric closure of maps for the respective chromosome arms and will supply the reagents needed for analyzing and sequencing these distal subtelomeric regions.