Results 221 to 230 of about 83,323 (258)
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Biochemical and Biophysical Research Communications, 1994
The surprising change of selectivity induced by the change of chirality in peptides containing the tetrahydro-3-isoquinoline carboxylic acid (Tic) in second position, interpreted as a conformational preference induced on the Tyr-Xaa-Phe domain, can instead be attributed to the Tyr-Tic message domain.
P. A. TEMUSSI +8 more
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The surprising change of selectivity induced by the change of chirality in peptides containing the tetrahydro-3-isoquinoline carboxylic acid (Tic) in second position, interpreted as a conformational preference induced on the Tyr-Xaa-Phe domain, can instead be attributed to the Tyr-Tic message domain.
P. A. TEMUSSI +8 more
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Electrochemical detection of dipeptides and dipeptide amides
Journal of Chromatography A, 1990A postcolumn reagent is used to create electroactive species from non-electroactive peptides. The reagent, based on the classical biuret reagent, consists of Cu(II), tartrate, bicarbonate and base. The detection is by dual electrode electrochemical detection. N-Acetylated dipeptides are oxidized at pH 12 and low potential.
H Y, Tsai, S G, Weber
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Physiology & Behavior, 1976
Abstract Forty-six commercially available dipeptides, reagent grade, along with 3 L-amino acids were rated on 52 sematic differential scales. A verbal description, as well as a multidimensional representation of the tastes, was obtained. Although many dipeptides have a bitter component, other characteristics were found as well.
S S, Schiffman, H H, Engelhard
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Abstract Forty-six commercially available dipeptides, reagent grade, along with 3 L-amino acids were rated on 52 sematic differential scales. A verbal description, as well as a multidimensional representation of the tastes, was obtained. Although many dipeptides have a bitter component, other characteristics were found as well.
S S, Schiffman, H H, Engelhard
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Dipeptides as Microporous Materials
Angewandte Chemie International Edition, 2004The synthesis and characterization of hydrophobic porous frameworks designed for a variety of applications has attracted significant research efforts over the last few years. The key idea in such studies is to design building elements which allow for controllable assembly and disassembly, and which may be extensively replaced and modified to give ...
Soldatov, Dmitriy V. +2 more
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Peptides, 1995
Cyclic dipeptides are among the simplest peptide derivatives commonly found in nature. Most cyclic dipeptides found to date appear to have emerged as by-products of fermentation and food processing. However, many are endogenous to members of animal and plant kingdoms; these include cyclo(Pro-Leu), cyclo(Pro-Val), cyclo(Pro-Phe), cyclo(Ala-Leu), cyclo ...
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Cyclic dipeptides are among the simplest peptide derivatives commonly found in nature. Most cyclic dipeptides found to date appear to have emerged as by-products of fermentation and food processing. However, many are endogenous to members of animal and plant kingdoms; these include cyclo(Pro-Leu), cyclo(Pro-Val), cyclo(Pro-Phe), cyclo(Ala-Leu), cyclo ...
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A silaproline-containing dipeptide
Acta Crystallographica Section C Crystal Structure Communications, 2000The silaproline-containing dipeptide N-(3, 3-dimethyl-1-pivaloyl-1-aza-3-sila-5-cyclopentylcarbonyl)-L- alanine isopropylamide, C(17)H(33)N(3)O(3)Si, has two independent molecules in the asymmetric unit and each adopts a beta-II folded conformation, where the amide on the terminal C interacts intramolecularly with the pivaloyl O atom. The five-membered
B, Vivet +5 more
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Biopolymers, 1969
AbstractThe amide bond in L,L‐ and L,D‐α‐chloropropionylalanine methyl ester is shown to be trans by molar polarization and infrared spectroscopy. In these dipeptide diastereoisomer analogues, therefore, differences in physical properties, i.e., melting points, crystalline forms, gas chromatographic mobilities, etc., depend on preferred molecular ...
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AbstractThe amide bond in L,L‐ and L,D‐α‐chloropropionylalanine methyl ester is shown to be trans by molar polarization and infrared spectroscopy. In these dipeptide diastereoisomer analogues, therefore, differences in physical properties, i.e., melting points, crystalline forms, gas chromatographic mobilities, etc., depend on preferred molecular ...
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Human renin inhibiting dipeptide
European Journal of Pharmacology, 1986KRI-1177, a dipeptide containing nor-statine inhibited renin activity in human and Japanese monkey plasma to a markedly greater extent than that in dog, rabbit and rat plasma. The systemic blood pressure of anesthetized monkeys was lowered by intravenous injections of this compound which also reduced plasma renin activity and concentration of ...
N, Toda +4 more
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Fluoroolefin dipeptide isosteres -II.
Tetrahedron Letters, 1990Abstract The syntheses of Gly-Gly and racemic Phe-Gly fiuoroolefin dipeptide isosteres are described, the first examples of a new class of peptide analogues.
Thomas Allmendinger +2 more
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Related dipeptide and characteristic dipeptide of optimal pH in α-amylase
Biochemical and Biophysical Research Communications, 2002Alpha-amylase is an enzyme of great significance to industry, but most alpha-amylases are unstable at lower pH. In this paper, we have studied the related dipeptide and characteristic dipeptide of optimal pH in alpha-amylase. On analysis, it gives the explicit results as follows: (1) Ten dipeptides are associated with alpha-amylase's optimal pH. AH, DV,
Ge-Xin, Zhang, Wei-Jiang, Li
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