Easy preparation of dehydroalanine building blocks equipped with oxazolidin-2-one chiral auxiliaries, and applications to the stereoselective synthesis of substituted tryptophans.

abstract：:New bioinorganic complexes of the aspartic acid with the antimony or bismuth triiodide were synthesized by a direct solid-solid reaction at room temperature. The formula of the complex is MI(3)[OOCCH(2)CH(NH(2))CO](2.5) x 2.5H(2)O (M = Sb, Bi). The complex may be a dimer with bridge structure. The crystal structure of...

journal_title：Amino acids

authors： Jia RR,Wu CP,Wu S,Yang YX,Chen YR,Jia YQ

更新日期：2006-07-01 00:00:00

abstract：:Some of the chemistry of amino acids going on in our laboratory (Laboratoire des Amino acides Peptides et Protéines) is described as well as some mass spectrometry methodology for their characterization particularly on solid supports. Several aspects are presented including: (i) the stereoselective synthesis of natura...

journal_title：Amino acids

authors： Bouifraden S,Drouot C,el Hadrami M,Guenoun F,Lecointe L,Mai N,Paris M,Pothion C,Sadoune M,Sauvagnat B,Amblard M,Aubagnac JL,Calmes M,Chevallet P,Daunis J,Enjalbal C,Fehrentz JA,Lamaty F,Lavergne JP,Lazaro R,Rollan

更新日期：1999-01-01 00:00:00

abstract：:Taking a minimalistic approach in efforts to lower the cost for the development of new synthetic antimicrobial peptides, ultrashort cationic lipopeptides were designed to mimic the amphiphilic nature crucial for their activity but with only a very short peptide sequence ligated to a lipidic acid. Nine ultrashort catio...

journal_title：Amino acids

authors： Domalaon R,Yang X,O'Neil J,Zhanel GG,Mookherjee N,Schweizer F

更新日期：2014-11-01 00:00:00

abstract：:3-Hydroxyaspartic acid and its derivatives are found both in the free form and as peptide constituents in various microorganisms and fungi. Considering the biological importance of this amino acid and its potential utility as a multifunctional building block in organic syntheses, we have developed a short-step, asymme...

journal_title：Amino acids

authors： Khalaf JK,Datta A

更新日期：2008-08-01 00:00:00

abstract：:Oxidative deamination of norepinephrine (NE) and dopamine (DA) by monoamine oxidase (MAO) generates the catecholaldehydes 3,4-dihydroxyphenylglycolaldehyde (DOPEGAL) and 3,4-dihydroxyphenylacetaldehyde (DOPAL), respectively, and H2O2. Catecholaldehydes are highly reactive electrophiles that have been implicated as cau...

journal_title：Amino acids

authors： Nelson MM,Builta ZJ,Monroe TB,Doorn JA,Anderson EJ

更新日期：2019-01-01 00:00:00

abstract：:Taurine is a β-amino acid found in high concentrations in excitable tissues, including the heart. A significant reduction in myocardial taurine content leads to the development of a unique dilated, atrophic cardiomyopathy. One of the major functions of taurine in the heart is the regulation of the respiratory chain. H...

journal_title：Amino acids

authors： Schaffer SW,Shimada-Takaura K,Jong CJ,Ito T,Takahashi K

更新日期：2016-02-01 00:00:00

abstract：:The human organism is exposed to numerous processes that generate reactive oxygen species (ROS). ROS may directly or indirectly cause oxidative modification and damage of proteins. Protein oxidation is regarded as a crucial event in the pathogenesis of various diseases ranging from rheumatoid arthritis to Alzheimer's ...

journal_title：Amino acids

authors： Pietzsch J,Bergmann R,Wuest F,Pawelke B,Hultsch C,van den Hoff J

更新日期：2005-12-01 00:00:00

abstract：:Nitric oxide synthase (NOS) activities are responsible for the enzymatic conversion of L-arginine into NO and L-citrulline. Relatively low amounts of NO are produced in intestinal epithelial cells or are released from nerve endings. The effects of NO production are related to the maintenance of epithelial integrity an...

journal_title：Amino acids

authors： Guihot G,Guimbaud R,Bertrand V,Narcy-Lambare B,Couturier D,Duée PH,Chaussade S,Blachier F

更新日期：2000-01-01 00:00:00

abstract：:Pseudomonas aeruginosa is particularly difficult to treat because it possesses a variety of resistance mechanisms and because it often forms biofilms. Antimicrobial peptides represent promising candidates for future templates of antibiotic-resistant bacterial infections due to their unique mechanism of antimicrobial a...

journal_title：Amino acids

authors： Xie J,Li Y,Li J,Yan Z,Wang D,Guo X,Zhang J,Zhang B,Mou L,Yang W,Jiang X

更新日期：2018-10-01 00:00:00

abstract：:In previous studies we characterized arginine transporter genes from Trypanosoma cruzi and Leishmania donovani, the etiological agents of chagas disease and kala azar, respectively, both fatal diseases in humans. Unlike arginine transporters in higher eukaryotes that transport also lysine, these parasite transporters ...

journal_title：Amino acids

authors： Inbar E,Canepa GE,Carrillo C,Glaser F,Suter Grotemeyer M,Rentsch D,Zilberstein D,Pereira CA

更新日期：2012-01-01 00:00:00

abstract：:Proline dehydrogenase/oxidase (PRODH/POX) is a mitochondrial protein critical to multiple stress pathways. Because of the roles of PRODH/POX in signaling, and its shared localization to the mitochondrial inner membrane with the electron transport chain (ETC), we investigated whether there was a direct relationship bet...

journal_title：Amino acids

authors： Hancock CN,Liu W,Alvord WG,Phang JM

更新日期：2016-03-01 00:00:00

abstract：:Among the large family of cyclodepsipeptides, the simplest members are the cyclodidepsipeptides which have an ester group and an amide group in the same six-membered ring. To point out the pharmacological potential of this class of compounds, the present article reviews structure, isolation, synthesis and biological p...

journal_title：Amino acids

authors： Smelcerovic A,Dzodic P,Pavlovic V,Cherneva E,Yancheva D

更新日期：2014-04-01 00:00:00

abstract：:Spore coat-associated alanine racemase of Bacillus subtilis, which converts L-alanine to D-alanine, that is, the germinant to the competitive inhibitor, to regulate spore germination for survival of the organism under unfavorable growth conditions, was examined. The dormant spores, L-alanine-initiated germination of w...

journal_title：Amino acids

authors： Kanda-Nambu K,Yasuda Y,Tochikubo K

更新日期：2000-01-01 00:00:00

abstract：:Hyperargininemia is caused by deficiency of arginase 1, which catalyzes the hydrolysis of L-arginine to urea as the final enzyme in the urea cycle. In contrast to other urea cycle defects, arginase 1 deficiency usually does not cause catastrophic neonatal hyperammonemia but rather presents with progressive neurologica...

journal_title：Amino acids

authors： Schlune A,Vom Dahl S,Häussinger D,Ensenauer R,Mayatepek E

更新日期：2015-09-01 00:00:00

abstract：:The role of pH-dependent ionic structures of L-amino acids in catalysis has been investigated for the two-component Mannich reactions between dimethyl malonate (DMM)/ethyl acetoacetate (EAA) and imines. As catalysts, L-amino acids performed well, even better than corresponding base catalysts and provided the β-amino c...

journal_title：Amino acids

authors： Rani D,Thakur L,Khera M,Goel N,Agarwal J

更新日期：2019-11-01 00:00:00

abstract：:This study tested the hypothesis that L-arginine (Arg) may stimulate cell proliferation and prevent lipopolysaccharide (LPS)-induced death of intestinal cells. Intestinal porcine epithelial cells (IPEC-1) were cultured for 4 days in Arg-free Dulbecco's modified Eagle's-F12 Ham medium (DMEM-F12) containing 10, 100 or 3...

journal_title：Amino acids

authors： Tan B,Yin Y,Kong X,Li P,Li X,Gao H,Li X,Huang R,Wu G

更新日期：2010-04-01 00:00:00

abstract：:The study was designed to investigate the effects of NMDA receptor agonist on the behavioral activity in rats with experimental hyperammonemia. The experiments were performed on adult male Wistar rats. Experimental hyperammonemia was induced by intraperitoneal injections of tioacetamide (TAA, 200 mg/kg) for three cons...

journal_title：Amino acids

authors： Fedosiewicz-Wasiluk M,Hoły ZZ,Wiśniewska RJ,Wiśniewski K

更新日期：2005-02-01 00:00:00

abstract：:The focus has been on the development of methodology for stereoselective preparation of spiroannulated intermediates of the Schöllkopf chiron and further transformations to cyclic alpha-amino acids. The spiroannulations are effected by Ru(II)-catalysed ring-closing metathesis reactions, by Ru(II)- and Pd(0)-catalysed ...

journal_title：Amino acids

authors： Undheim K

更新日期：2008-04-01 00:00:00

abstract：:Several descriptors of protein structure at the sequence and residue levels have been recently proposed. They are widely adopted in the analysis and prediction of structural and functional characteristics of proteins. Numerous in silico methods have been developed for sequence-based prediction of these descriptors. Ho...

journal_title：Amino acids

authors： Chen K,Stach W,Homaeian L,Kurgan L

更新日期：2011-03-01 00:00:00

abstract：:Endurance exercise training as well as leucine supplementation modulates glucose homeostasis and protein turnover in mammals. Here, we analyze whether leucine supplementation alters the effects of endurance exercise on these parameters in healthy mice. Mice were distributed into sedentary (C) and exercise (T) groups. ...

journal_title：Amino acids

authors： Costa Júnior JM,Rosa MR,Protzek AO,de Paula FM,Ferreira SM,Rezende LF,Vanzela EC,Zoppi CC,Silveira LR,Kettelhut IC,Boschero AC,de Oliveira CA,Carneiro EM

更新日期：2015-04-01 00:00:00

abstract：:Methionine (Met) is an essential amino acid for all organisms. In plants, Met also functions as a precursor of plant hormones, polyamines, and defense metabolites. The regulatory mechanism of Met biosynthesis is highly complex and, despite its great importance, remains unclear. To investigate how accumulation of Met i...

journal_title：Amino acids

authors： Kusano M,Fukushima A,Redestig H,Kobayashi M,Otsuki H,Onouchi H,Naito S,Hirai MY,Saito K

更新日期：2010-10-01 00:00:00

abstract：:Fibronectin (FN) is a cell adhesion protein that binds integrins in a process also involving the protein-crosslinking enzyme transglutaminase 2 (TG2) as a co-receptor. The cell-adhesive property of TG2 has been linked to a complex formation with FN and to its ability to crosslink and polymerize FN on the cell surface....

journal_title：Amino acids

authors： Forsprecher J,Wang Z,Nelea V,Kaartinen MT

更新日期：2009-04-01 00:00:00

abstract：:Properties of putrescine uptake by PotFGHI and PuuP and their physiological significance were studied using a polyamine biosynthesis and uptake deficient Escherichia coli KK3131 transformed with pACYC184 containing potFGHI or puuP. Putrescine uptake activity of E. coli KK3131 transformed with pACYC184-PotFGHI was high...

journal_title：Amino acids

authors： Terui Y,Saroj SD,Sakamoto A,Yoshida T,Higashi K,Kurihara S,Suzuki H,Toida T,Kashiwagi K,Igarashi K

更新日期：2014-03-01 00:00:00

abstract：:The enhancing effect on the water structure has been confirmed for most of the osmolytes exhibiting both stabilizing and destabilizing properties in regard to proteins. The presented work concerns osmolytes, which should be classified as "structure breaking" solutes: taurine and N,N,N-trimethyltaurine (TMT). Here, we ...

journal_title：Amino acids

authors： Bruździak P,Panuszko A,Kaczkowska E,Piotrowski B,Daghir A,Demkowicz S,Stangret J

更新日期：2018-01-01 00:00:00

abstract：:Previous studies identified lysine- and tryptophan-rich sequences within various cationic antimicrobial peptides. In the present study, we synthesized a series of peptides composed of lysine (K)-tryptophan (W) repeats (KW)( n ) (where n equals 2, 3, 4 or 5) with amida...

journal_title：Amino acids

authors： Gopal R,Seo CH,Song PI,Park Y

更新日期：2013-02-01 00:00:00

abstract：:Nitrogen fixation of the nodule of soybean is highly sensitive to oxygen deficiency such as provoked by waterlogging of the root system. This study aimed to evaluate the effects of flooding on N metabolism in nodules of soybean. Flooding resulted in a marked decrease of asparagine (the most abundant amino acid) and a ...

journal_title：Amino acids

authors： Souza SC,Mazzafera P,Sodek L

更新日期：2016-05-01 00:00:00

abstract：:Phenolic compounds are interesting because of their antioxidant properties. In the present study, the antioxidant properties of L-tyrosine as a monophenolic and L-Dopa as a diphenolic amino acid were investigated by using different antioxidant assays: (i) 1,1-diphenyl-2-picryl-hydrazyl free radical (DPPH*) scavenging;...

journal_title：Amino acids

authors： Gülçin I

更新日期：2007-01-01 00:00:00

abstract：:In mammals, two major routes exist for the metabolic conversion of L-glutamine to α-ketoglutarate. The most widely studied pathway involves the hydrolysis of L-glutamine to L-glutamate catalyzed by glutaminases, followed by the conversion of L-glutamate to α-ketoglutarate by the action of an L-glutamate-linked aminotr...

journal_title：Amino acids

authors： Cooper AJ,Shurubor YI,Dorai T,Pinto JT,Isakova EP,Deryabina YI,Denton TT,Krasnikov BF

更新日期：2016-01-01 00:00:00

abstract：:The objective of the study was to test L-methioinine as a possible immune supportive supplement in HIV infected patients by means of a clinical study. A double-blind, placebo-controlled study was designed. The patients (n = 253) from four different trial centres were randomly divided into two groups, active and placeb...

journal_title：Amino acids

authors： Van Brummelen R,du Toit D

更新日期：2007-07-01 00:00:00

abstract：:The major goal of this review is a critical discussion of the literature data on asymmetric synthesis of α-amino acids via Michael addition reactions involving Ni(II)-complexes of amino acids. The material covered is divided into two conceptually different groups dealing with applications of: (a) Ni(II)-complexes of g...

journal_title：Amino acids

authors： Aceña JL,Sorochinsky AE,Soloshonok V

更新日期：2014-09-01 00:00:00