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MCAD - MSOE Center for BioMolecular Modeling
MCAD - MSOE Center for BioMolecular Modeling

... Intermolecular Interactions Modeled in MCAD, FAD and ETF MCAD Active Site: Glu376, Glu199, Leu103, Ser142, Met249, Asp253, Arg388 Folding of MCAD: 2 Dimers Combine: Arg28:A and Glu86:D Tetramer: Lys304, Glu300, Gln342, Asp346, Arg383 ...
Species Absorbing in the 500-nm Region in the Reactions of
Species Absorbing in the 500-nm Region in the Reactions of

... Metal ion mediated nonenzymatic reactions of pyridoxal (PL) and amino acid derivatives and those of pyridoxamine (PM) and a -keto acid derivatives have been proved to be useful tools for the mechanistic investigation of PL functions.3) We found that in methanol solutions PM and ester of an a keto ac ...
Designing logical codon reassignment
Designing logical codon reassignment

... organisms and even animals.10 Other systems based on the reassignment of the ochre and opal stop codons,11 in addition to the use of quadruplet codons have also been reported (see later section).12 It is now also possible to consider their combined use for the incorporation of multiple distinct UAAs ...
HEMOGLOBIN AND PORPHYRINS
HEMOGLOBIN AND PORPHYRINS

Synthetic biology for engineering acetyl coenzyme a
Synthetic biology for engineering acetyl coenzyme a

... The study also clearly demonstrated that functional PDH activity in the cytosol required the addition of lipoic acid to the medium. The cytosolic localization of the enzyme was demonstrated by subcellular fractionation followed by gel filtration and mass spectrometry. Furthermore, enzyme activity co ...
- BioMedSearch
- BioMedSearch

... effective anti-influenza agent (see [16]). E. coli, overexpressing PEPS, are widely used in the biosynthesis of shikimic acid as is over-expression of 3-deoxy-D-arabino-heptulosonic acid 7-phosphate (DAHP) synthase whose use can be limited by feedback inhibition. Overexpression of feedback insensiti ...
Enzyme Mechanisms - Weber State University
Enzyme Mechanisms - Weber State University

... Enzyme Mechanisms – Chymotrypsin, Trypsin, Elastase ...
Active site mapping, biochemical properties and
Active site mapping, biochemical properties and

... designed to interact with the S2, S1 and S% subsites of the active site cleft revealed differences between rhodesain and the related trypanosome protease cruzain. Using fluorogenic dipeptidyl substrates, rhodesain and cruzain had acid pH optima, but unlike some mammalian cathepsins retained signific ...
Chapter 1 - Research Explorer
Chapter 1 - Research Explorer

... (BCAA), was one of the first organic acidemias to be described, almost 50 years ago by Tanaka et al. (1966). Subsequently, Budd et al. (1967) clarified the primary clinical manifestations of the disease. A large number of case studies have progressively emphasized the clinical heterogeneity of IVA ( ...
glycogen metabolism
glycogen metabolism

... • glycogen synthase, is the key regulatory enzyme in glycogen synthesis. • It can add glucosyl residues only if the polysaccharide chain already contains more than four residues. • Thus, glycogen synthesis requires a primer. – This priming function is carried out by glycogenin, a protein composed o ...
Combined fluorescence and electrochemical investigation on the
Combined fluorescence and electrochemical investigation on the

... is a heart-shaped molecule composed of a single-chain of 585 amino acid residues with a molecular weight of 66400 Da. As first reported by Carter’s group (Carter and Ho, 1994; He and Carter, 1992), HSA is made of three homologous domains (I, II and III), each with two subdomains (A and B). The main s ...
BIOCHEMISTRY Carbohydrate Metabolism
BIOCHEMISTRY Carbohydrate Metabolism

... • Step 3 – Phosphofructokinase (an allosteric enzyme) is inhibited by high levels of ATP & Citrate & is activated by high levels of ADP. • Step 10 – Pyruvate kinase (an allosteric enzyme) is inhibited by high levels of ATP & Acetyl CoA. ...
Communication
Communication

Characteristics of Sophorolipid as an Antimicrobial Agent
Characteristics of Sophorolipid as an Antimicrobial Agent

... biosurfactant that was produced from Pseudomonas sp., showed antimicrobial, antifungal, mycoplasmicidal, and antiviral activities [24, 45]. Surfactin and iturin, lipopeptidetype biosurfactants, inhibited bacterial cell growth by disintegrating the cellular membrane [1, 3] and showed some antiviral a ...
citric acid metabolism in lactic bacteria and
citric acid metabolism in lactic bacteria and

... The timing of post-fermentation sulphiting also has a major impact. Close monitoring of the L-malic acid degradation kinetics during MLF (assays on a twice-weekly basis) is recommended when diacetyl content is a major concern for the winemaker. This enables the winemaker to sulphite the wine rapidly ...
chap18 oxidative phosphorylation
chap18 oxidative phosphorylation

... Oxidative pphosphorylation produces 30 of the 32 molecules of ATP that are formed when glucose is oxidized to CO2 and H2O. The process is conceptually easy but mechanistically very difficult. The electron flow from NADH and FADH2 to oxygen through protein complexes leads to pumping of protons outsid ...
Physiology of the thermophilic acetogen Moorella - The Keep
Physiology of the thermophilic acetogen Moorella - The Keep

... it  cannot  be  excluded  that  M.  thermoacetica  translocates  sodium  ions.  Indeed,  under   certain  conditions,  sodium-­‐proton  antiporters  may  be  involved  in  the  formation  of   electrochemical  gradients  by  M.  thermoacetica   ...
Russell, M.J. and Hall, A.J. 2006.
Russell, M.J. and Hall, A.J. 2006.

... convection in the oceanic crust, was resolved by the onset of life. We suggest that this chemosynthetic life emerged within hydrothermal mounds produced by alkaline solutions of moderate temperature in the relative safety of the deep ocean floor. Exothermic reaction between hydrothermal H2, HCOO - a ...
Associative Nitrogen-fixation Bacteria and Cyanobacteria.
Associative Nitrogen-fixation Bacteria and Cyanobacteria.

... The discovery, in Arabidopsis, of two cytochrome P450 enzymes (CYP79B2 and CYT79B3) that catalyze the formation of IAox from Trp, suggests that at least a portion of IAN could be Trp-derived via an IAox intermediate. IAN may also be regarded as a degradation product resulting from the turnover of in ...
Key Residues Controlling Binding of Diverse Ligands to Human
Key Residues Controlling Binding of Diverse Ligands to Human

... CYP2A enzymes. In several cases, other P450 proteins are known to adapt to different ligands in a more induced-fit mode of binding, frustrating attempts to predict drug binding and metabolism. If the relatively small CYP2A selectivity is based on a more steric-dominated, lock-andkey type model, then ...
Classification of pseudo pairs between nucleotide bases and amino
Classification of pseudo pairs between nucleotide bases and amino

METABOLIC ADAPTATION OF CANDIDA
METABOLIC ADAPTATION OF CANDIDA

... 1.1 Significance of Study ...
Discovery of genes in the Pacific oyster (Crassostrea gigas) involved
Discovery of genes in the Pacific oyster (Crassostrea gigas) involved

Computational Studies of Multi-Active Site Enzymes
Computational Studies of Multi-Active Site Enzymes

... relative free energies of the rate-limiting barriers as well as that of the hydrolyzed products for Thr-AMP (14-19 and 4-10 kcal mol-1, respectively) are markedly higher than for Ser-AMP (7-12 and 0-5 kcal mol-1, respectively). That is, MST1 thermodynamically and kinetically preferentially edits aga ...
Acids and Bases
Acids and Bases

... aspirin and vitamin C are acetylsalicylic acid and ascorbic acid; both will produce H+ ions when dissolved in water. Acetic acid (HC2 H3 O2 ) is the primary component in vinegar, and formic acid (HCO2 H) is what causes ant bites to sting. Hydrochloric acid (HCl) is stomach acid, phosphoric acid (H3 ...
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Amino acid synthesis

Amino acid synthesis is the set of biochemical processes (metabolic pathways) by which the various amino acids are produced from other compounds. The substrates for these processes are various compounds in the organism's diet or growth media. Not all organisms are able to synthesise all amino acids. Humans are excellent example of this, since humans can only synthesise 11 of the 20 standard amino acids (aka non-essential amino acid), and in time of accelerated growth, arginine, can be considered an essential amino acid.A fundamental problem for biological systems is to obtain nitrogen in an easily usable form. This problem is solved by certain microorganisms capable of reducing the inert N≡N molecule (nitrogen gas) to two molecules of ammonia in one of the most remarkable reactions in biochemistry. Ammonia is the source of nitrogen for all the amino acids. The carbon backbones come from the glycolytic pathway, the pentose phosphate pathway, or the citric acid cycle.In amino acid production, one encounters an important problem in biosynthesis, namely stereochemical control. Because all amino acids except glycine are chiral, biosynthetic pathways must generate the correct isomer with high fidelity. In each of the 19 pathways for the generation of chiral amino acids, the stereochemistry at the α-carbon atom is established by a transamination reaction that involves pyridoxal phosphate. Almost all the transaminases that catalyze these reactions descend from a common ancestor, illustrating once again that effective solutions to biochemical problems are retained throughout evolution.Biosynthetic pathways are often highly regulated such that building-blocks are synthesized only when supplies are low. Very often, a high concentration of the final product of a pathway inhibits the activity of enzymes that function early in the pathway. Often present are allosteric enzymes capable of sensing and responding to concentrations of regulatory species. These enzymes are similar in functional properties to aspartate transcarbamoylase and its regulators. Feedback and allosteric mechanisms ensure that all twenty amino acids are maintained in sufficient amounts for protein synthesis and other processes.
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