Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"L-Met"”.
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Physiological and Biochemical Aspects of Methionine Isomers and Precursors in Broilers
Methionine (Met) is an essential amino acid for animals and also the first limiting amino acid in a broiler diet. The dietary supplemental Met sources include the natural isoform L-methionine (L-Met), the synthetic form DL-methionine (DL-Met) and the synthetic Met precursor DL-2-hydroxy-4 …
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Vibrational spectroscopic studies of the structure and conformation of cyclic di-amino acid peptides
… diketopiperazine (DKP) ring and the cis amide geometry of the peptide bond, in relation to the vibrational spectra of a series of cyclic di-amino acid peptides (CDAPs). Experimental Raman and infra-red spectra have been recorded for the following CDAPs: cyclo(Gly-Gly), cyclo(L-Ala-L-Ala), …
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Factors Affecting Deficiency and Toxicity of Sulfur-Containing Compounds
… of acid-base balance. Thus, excess Cys led to metabolic acidosis within 12 hours of feeding and was ultimately lethal. The growth depressive and lethal effects observed in chicks consuming 2.5% excess Cys were ameliorated through provision of dietary potassium bicarbonate and hydrogen peroxide, …
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Solid state nuclear magnetic resonance methodology and applications to structure determination of peptides, proteins and amyloid fibrils
Several methodological developments and applications of multidimensional solid-state nuclear magnetic resonance to biomolecular structure determination are presented. Studies are performed in uniformly 3C, 15N isotope labeled samples with magic-angle spinning for optimal resolution and sensitivity. …
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A [(η5-Cp*)Rh]2+ kation komplexképző tulajdonsága L-Metioninnal és S-Metil-L-Ciszteinnel
… vizsgáltam meg tridentát koordinációra képes L-metionin és S-metil-L-cisztein jelenlétében. Mindkét ligandum esetében (N, O, S) koordináció alakulhat ki, ahol a kén, kis bázicitású tioéter formában van jelen. Mivel már pH=2 körül is végbemegy a komplexképződés, ezért arra potenciometriás …
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Metabolomic Investigation of Melanoma Metastasis in a Patient-Derived Xenograft Mouse Model
Metabolic reprogramming is considered a major factor in cellular transformation and tumor initiation, but whether or how metabolism supports tumor metastasis remains an open question. This study seeks to identify metabolic predictors of metastasis, with the rationale that understanding metabolic …
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Effects of Supplementing Crystalline L-Valine and L-Isoleucine and a Novel Threonine Biomass in Reduced Crude Protein Diets fed to Broilers
<p>Poultry nutritionists continue to identify methods to lower feed price without compromising broiler growth performance, processing yields, or animal well-being. A common approach is to reduce dietary crude protein (CP), the second most expensive component in a broiler diet. Subsequently, …
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Effect of cereal type and commensal bacteria on availability of methionine sources and intestinal physiology in pigs
… microbiota to variation in bioefficacy of methionine sources and the interrelationship between intestinal microbiota and cereal grain type with respect to gastrointestinal physiology. Apparent gastrointestinal absorption of DL-methionine (MET) and 2-hydroxy-4-methylthiobutanoic acid …
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Characterization of the Broad-Spectrum Racemase, BsrF, in Vibrio fischeri
… for BsrF. BsrF racemized D-Arg, D-Lys, and D-Met from their L-amino acid counterparts and these D-amino acids accumulated in the growth medium during the log growth phase. Further, BsrF racemized L-Leu, L-Gln, and L-Ala, although they were less optimal substrates and their D-enantiomers did …
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Mineralogy and bulk chemistry of chondrules and matrix in petrologic type 3 chondrites : implications for early solar system processes
… types in four petrologic type 3 chondrites: MET 00526 (L3.05), MET 00426 (CR3.0), Kainsaz (CO3.2) and Kakangari (K3). Bulk compositions of twenty chondrules in each meteorite were determined with modal recombination analysis. This study provides a self-consistent dataset that combines …
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Sulfur amino acid nutrition of the young pig
… Pigs were ad libitum fed in all experiments. A methionine (Met)-deficient feather meal-corn-soybean meal-dried whey basal diet (20% protein, 3250 kcal ME/kg, 0.19% Met, 1.00% cystine (Cys), 0.11% choline) was used to determine the Met and SAA requirements and to evaluate the utilization of Met …