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Articles 1 - 17 of 17
Full-Text Articles in Biochemistry, Biophysics, and Structural Biology
Binding Of Aminoacyl-Trna To Bacterial Ribosomes, Somesh Datt Sharma
Binding Of Aminoacyl-Trna To Bacterial Ribosomes, Somesh Datt Sharma
Masters Theses
No abstract provided.
Rotationally Inelastic Molecular Scattering. Computational Tests Of Some Simple Solutions Of The Strong Coupling Problem, Thomas P. Tsien, Gregory A. Parker, Russell T. Pack
Rotationally Inelastic Molecular Scattering. Computational Tests Of Some Simple Solutions Of The Strong Coupling Problem, Thomas P. Tsien, Gregory A. Parker, Russell T. Pack
Faculty Publications
Partial cross sections (opacity functions) for rotational transitions in atom-diatom collisions are computed in the infinite-order sudden (IOS) approximation and compared with accurate close-coupling (CC) calculations. Agreement is good in the dominant coupling (small total angular momentum J) region. Simple methods for calculating integral inelastic cross sections are discussed, and it is found that accurate cross sections can often be computed very simply, even when large numbers of channels are coupled together, by using IOS or first-order sudden (FOS) approximations for small J and CC or exponential Born (EBDW) methods for large J.
The Effects Of Deficiencies Of Certain Mineral Nutrients On The Activity And Various Properties Of Ribulose-1,5-Diphosphate Carboxylase From Barley (Hordeum Vulgare L.), Philip Alan Harrison
The Effects Of Deficiencies Of Certain Mineral Nutrients On The Activity And Various Properties Of Ribulose-1,5-Diphosphate Carboxylase From Barley (Hordeum Vulgare L.), Philip Alan Harrison
Theses and Dissertations
Barley plants grown in Mg, Mn, Zn and Cu deficient media were analyzed for specific activity, total activity and amount of RuDPCase present. Percent dry weight, as well as chlorophyll and soluble protein content were determined. All deficiencies caused lower chlorophyll and RuDPCase concentrations than occurred in the control. Soluble protein content, however, was higher in all deficient plants than in the control, either on a dry or a fresh weight basis. The addition of 18 μM Mn^2+ increased the activity of Mg^2+ containing RuDPCase preparations as much as 133% above normal. The specific activity of RuDPCase from Mg, Mn, …
I. An Isothermal Titration Microcalorimeter. Ii. Importance Of Micronutrients In Nutrition. Iii. Zinc Bibliography, John Willard Gardner
I. An Isothermal Titration Microcalorimeter. Ii. Importance Of Micronutrients In Nutrition. Iii. Zinc Bibliography, John Willard Gardner
Theses and Dissertations
I. An isothermal titration microcalorimeter having a colume of 4 ml and capable of temerature control to ±2 x 10-5°C is described. Major components include a constant temperature water bath controlled to ±3 x 10-4°C, a platinum reation vessel, and an isothermal control circuit consisting of constant Peltier thermoelectric cooling and variable Joule heating controlled by a thermistor in an AC Wheatstone bridge circuit. The calorimeter was tested by measuring the heat of ionization of water and was found to produce data accurate to ± 0.1% where small samples are used such as in the investigation of many biological systems.
Purification And Characterization Of Dihydroorotase From Clostridium Oroticum, A Zinc-Containing Metalloenzyme, William Edward Balch
Purification And Characterization Of Dihydroorotase From Clostridium Oroticum, A Zinc-Containing Metalloenzyme, William Edward Balch
Dissertations and Theses
Dihydroorotase (4,5-L-dihydro-orotate amidohydrolase, EC 3.5.2.3) which catalyzes the reversible cyclization of N-carbamyl-1-aspartate toL-dihydro-orotate has been purified from orotate-grown Clostridium oroticum by a combination of streptomycin sulfate fractionation, DEAE-Sephadex chromatography, and hydroxylapatite chromatograpy. The enzyme has been shown to be omogeneous when subjected to polyacrylamide gel electrophoresis. Thin-layer gel chromatography with Sephadex G-200 indicated the enzyme to have a molecular weight of 110,000 ± 10,000. Sodium dodecyl sulfate gel electrophoresis using two different buffer systems indicate the enzyme to be composed of two identical subunits with a molecular weight of 56,000 ± 5300. Dihydroorotase has been shown to be a zinc-containing …
Role Of Membrane-Associated Components Of Mycoplasma Arthritidis On The Biosynthesis Of Humoral Antibodies And Arthritogenic Properties In Experimental Animals, Lois M. Bergquist
Role Of Membrane-Associated Components Of Mycoplasma Arthritidis On The Biosynthesis Of Humoral Antibodies And Arthritogenic Properties In Experimental Animals, Lois M. Bergquist
Loma Linda University Electronic Theses, Dissertations & Projects
The virulence of animal-passaged Mycoplasma arthritidis (158) was demonstrated to be enhanced in rats by growth in oleic acid-enriched broth. The virulence of a laboratory-maintained culture of the same strain was unaffected by similar growth conditions. No differences either in the immune response as measured by complement-fixing (CF) antibodies or in the histogenesis of the disease were detected when rats were injected with animal-passaged M. arthritidis grown either in the presence or in the absence of oleic acid. All tests for metabolism-inhibiting (MI) antibodies in the rat were negative.
A Mycoplasma-associated immunosuppression of the primary and of the secondary hemagglutinin …
The Effects Of Thiamin Deficiency And Thiamin Antagonists On Cardiac Function In The Rat, D. James B. Sutherland
The Effects Of Thiamin Deficiency And Thiamin Antagonists On Cardiac Function In The Rat, D. James B. Sutherland
Theses and Dissertations
A study was made to determine what biochemical changes were involved in the slowing of the rat heart rate during thiamin deprivation, pyrithiamin or oxythiamin treatment. The appearance of bradycardia during progressive thiamin deficiency was shown to be related to the reduction in myocardial enzymatic activity of pyruvate (PDH) and 2-ketoglutarate (2-KGDH) dehydrogenase, and not due to inanition alone since pair-fed control rats did not show bradycardia until the agonal stage. Bradycardia was not the result of reduced energy since CP, ATP, ADP, and AMP levels remained normal even though PDH and 2-KGDH activity dropped to 20% of normal by …
Transforming Ability Of Bacillus Subtilis Dna Taken Up By Barley Embryos, Christine Tolman Ence
Transforming Ability Of Bacillus Subtilis Dna Taken Up By Barley Embryos, Christine Tolman Ence
Theses and Dissertations
Purified Bacillus subtilis DNA taken up by one-day-old barley embryos and permanently fixed within the barley cell is shown to have maintained its biological activity in B. subtilis transformation. Cesuim chloride density gradient centrifugation of DNA isolated from the roots of barley embryos after the uptake and incorporation of radioactive, bromouracil-labelled B. subtilis DNA indicates the presence of the bacterial DNA in several discreet bands of well-defined density, whose density is changed by sonication. These preliminary findings concerning the fate of bacterial DNA taken up by barley roots are discussed in terms of the recombination model of Ledoux and Huart …
Studies Of The Effects Of Solvent Composition On The Association-Dissociation Of Oxyhemerythrin As Determined By Analytical Gel Chromatography, Kim Hock Tan
Dissertations
No abstract provided.
Grape Guards Prove Their Worth, Department Of Agriculture, Western Australia
Grape Guards Prove Their Worth, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
now being packed and protected with "grape guards"—gas releasing generators consisting of chemically treated paper which releases small quantities of sulphur dioxide. Grape guards inserted in unventilated storage boxes are activated by the high humidity in the box to release their sulphur dioxide and prevent decay of the packaged fruit. The guards were developed in the United States two years ago.
Characterization Of A Fatty Acid Synthetase From Corynebacterium Diphtheriae, Herman W. Knoche, Kirston E. Koths
Characterization Of A Fatty Acid Synthetase From Corynebacterium Diphtheriae, Herman W. Knoche, Kirston E. Koths
Department of Biochemistry: Faculty Publications
A fatty acid synthetase from Corynebacterium diphtheriae has been purified to a specific activity of 450 nmoles of malonyl coenzyme A incorporated per min per mg. The enzyme is optimally active in 0.5 M phosphate buffer. C. diphtheriae appears to be the most primitive organism having a multienzyme complex for fatty acid synthesis.
Palmityl Coenzyme A Inhibition Of Fatty Acid Synthesis, Herman Knoche, Theodore W. Esders, Kirston Koths, Konrad Bloch
Palmityl Coenzyme A Inhibition Of Fatty Acid Synthesis, Herman Knoche, Theodore W. Esders, Kirston Koths, Konrad Bloch
Department of Biochemistry: Faculty Publications
The effects of acyl-CoA derivatives (C8 to C20) on the activity
of the fatty acid synthetases from yeast and Corynebacterium
diphtheriae have been examined. Both enzyme
systems are inhibited by the longer chain acyl thioesters
(C16 to C20) and protected against this inhibition by bovine
serum albumin (BSA). Identical relief from acyl-CoA inhibition
is provided by the 6-0-methylglucose-containing
lipopolysaccharide (MGLP), from Mycobacterium phlei. It
is shown that MGLP forms a stable complex with palmitylCoA.
This interaction accounts for the BSA-like effects of
the polysaccharide. BSA and MGLP have two further effects
on the fatty …
Final Report On Interrelationships Between Chemical, Physical And Biological Conditions Of The Waters Of Las Vegas Bay Of Lake Mead, James E. Deacon, Richard W. Tew
Final Report On Interrelationships Between Chemical, Physical And Biological Conditions Of The Waters Of Las Vegas Bay Of Lake Mead, James E. Deacon, Richard W. Tew
Publications (WR)
This program was a status study of the interaction between Las Vegas Wash, an enriched stream, and Las Vegas Bay, a wedge shaped arm of one of the world's deeper reservoirs. The program centered primarily on identification and counting of planktonic algae from several points in Las Vegas Bay. Additional work on nutrient enrichment of water samples was conducted to aid in interpretation of algal distribution related to nutrient input. Examination of a variety of physical, chemical, and biological parameters, both at many surface points in the bay, as well as in vertical profile, was also accomplished and further aided …
The Oxygen Equilibrium Properties Of Hemerythrin In Solution And In Coelomic Cells Of Phascolopsis Gouldi, MarãA London
The Oxygen Equilibrium Properties Of Hemerythrin In Solution And In Coelomic Cells Of Phascolopsis Gouldi, MarãA London
Dissertations, Theses, and Masters Projects
No abstract provided.
A Characterization Of The Corticosterone-Binding-Globulin In The Plasma Of The Duck (Anas Platyrhynchos), James Leon Cheshier
A Characterization Of The Corticosterone-Binding-Globulin In The Plasma Of The Duck (Anas Platyrhynchos), James Leon Cheshier
Dissertations, Theses, and Masters Projects
No abstract provided.
Variations In Major Cations And Certain Heavy Metals In The Serum Of The Blue Crab, Callinectes Sapidus, James Alden Colvocoresses
Variations In Major Cations And Certain Heavy Metals In The Serum Of The Blue Crab, Callinectes Sapidus, James Alden Colvocoresses
Dissertations, Theses, and Masters Projects
No abstract provided.
Proboscipedia, A Homeotic Mutant In Aedes Aegypti (L.) (Diptera: Culicidae), John Roach Roberts Jr.
Proboscipedia, A Homeotic Mutant In Aedes Aegypti (L.) (Diptera: Culicidae), John Roach Roberts Jr.
Legacy ETDs
No abstract provided.