نتایج جستجو برای: amino acid aa

تعداد نتایج: 829625  

Journal: :international journal of advanced biological and biomedical research 2014
deniz heydarian seyed reza miraei-ashtiani mostafa sadeghi

objective: diacylglycerol acyltransferase 1 is a microsomal enzyme that catalyzes the final step of triglyceride synthesis. the objective of this project is to check out the polymorphism at the exon 8 region of dgat1 gene using pcr-sscp technique in iranian water buffaloes (bubalus bubalis). recent activities have shown that a significant association between lysine at amino acid position 232 wi...

2015
Junhua Liu Liyun Yuan Xiaodong Dong

Ascorbic acid (AA) is an essential nutrient for health maintenance. It plays an important role in many biological processes, such as collagen formation, amino acid metabolism, ion absorption and so on. The deficiency of AA will lead to the symptoms of scurvy and gingival bleeding, while excessive intake of AA will result in diarrhea, hyperacidity and kidney calculi. Therefore, the rapid, sensit...

Journal: :The Journal of biological chemistry 2004
Hong C Li Roger T Worrell Jeffrey B Matthews Holleh Husseinzadeh Lisa Neumeier Snezana Petrovic Laura Conforti Manoocher Soleimani

The Na+-HCO3- cotransporter NBC1 is located exclusively on the basolateral membrane and mediates vectorial transport of bicarbonate in a number of epithelia, including kidney and pancreas. To identify the motifs that direct the targeting of kidney NBC1 to basolateral membrane, wild type and various carboxyl-terminally truncated kidney NBC1 mutants were generated, fused translationally in-frame ...

Journal: :پژوهش های علوم دامی ایران 0
رضا طاهرخانی محمود شیوازاد مجتبی زاغری احمد زارع شحنه

a chick bioassay with chemically defined amino acid (aa) diets was conducted to compare four different aa profiles: the nrc (1994), feed stuff, rhone poulenc animal nutrition (rpan) and illinois ideal chick protein (iicp) aa profiles. this battery study involved male and female chicks during grower (21 to 42 days of age) period. indispensable aas were rationed to lysine according to requirement...

Journal: :FEMS microbiology letters 2002
Shigeru Chohnan Junko Nonaka Kousei Teramoto Kouichi Taniguchi Yuuko Kameda Hitoshi Tamura Yasurou Kurusu Shigemi Norioka Takeharu Masaki Fumio Sakiyama

A new lysyl endopeptidase producing strain, Lysobacter sp. IB-9374, was isolated from soil. This strain secreted the endopeptidase to culture medium at 6-12-fold higher levels relative to Achromobacter lyticus and Lysobacter enzymogenes. The mature Lysobacter sp. enzyme was enzymatically identical to Achromobacter lysyl endopeptidase bearing lysyl bond specificity, a high peptidase activity, a ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2000
S Karanth W H Yu A Walczewska C Mastronardi S M McCann

Because ascorbic acid (AA) is concentrated in synaptic vesicles containing glutamic acid, we hypothesized that AA might act as a neurotransmitter. Because AA is an antioxidant, it might therefore inhibit nitric oxidergic (NOergic) activation of luteinizing hormone-releasing hormone (LH-RH) release from medial basal hypothalamic explants by chemically reducing NO. Cell membrane depolarization in...

1999
A. J. Darragh P. J. Moughan S. M. Rutherfurd S. Boisen

Assessing amino acid (AA) availability in dietary ingredients is integral to the optimal formulation of diets both in terms of maximising nutrient utilization and profitability. Although the concept that nutrients in feedstuffs are not fully absorbed and metabolized by the animal is now widely accepted, a distinction needs to be made between the concepts of digestibility and availability. Diges...

2012
C. Anela Choy Peter C. Davison Jeffrey C. Drazen Adrian Flynn Elizabeth J. Gier Joel C. Hoffman Jennifer P. McClain-Counts Todd W. Miller Brian N. Popp Steve W. Ross Tracey T. Sutton

The δ(15)N values of organisms are commonly used across diverse ecosystems to estimate trophic position and infer trophic connectivity. We undertook a novel cross-basin comparison of trophic position in two ecologically well-characterized and different groups of dominant mid-water fish consumers using amino acid nitrogen isotope compositions. We found that trophic positions estimated from the δ...

Journal: :Poultry science 2001
M T Farran G W Barbour M G Uwayjan V M Ashkarian

In two experiments we evaluated the effect of water and acetic acid soaking on ME, apparent amino acid (AA) availability, and true AA availability of vetch (V) and ervil (E) seeds. In Experiment 1, the feedstuffs were untreated (U) V or coarsely ground V soaked in water (1:10, wt/vol) at 40 C for 72 h with a water change every 12 h (40WV), vetch soaked in 1% acetic acid for 24 h at 40 C (40AAV)...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2004
Clark R Landis Thomas P Clark

Functionalized chiral diazaphospholanes ligate to a variety of transition metals, yielding chiral, catalytically active, metal complexes. Previous work has established that amino acid derivatization of the carboxyl groups of (R,R)-N,N'-phthaloyl-2,3-(2-carboxyphenyl)-phenyl-3,4-diazaphospholane (1) yields phosphines that are excellent ligands for palladium-catalyzed asymmetric allylic alkylatio...

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