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7.013 Spring 2005 Problem Set 1Solutions
7.013 Spring 2005 Problem Set 1Solutions

... d) You determine another gene, gene D, maps 20 cM or map units away from gene A. i) Given the cell with chromosome configuration below, what would be the genotypes of all the gametes if a recombination takes place between A and D? ...
1. Introduction to Natural Products Chemistry
1. Introduction to Natural Products Chemistry

... the most colorful history, having achieved the most fame and notoriety as drugs. Where alkaloids occur, they tend to dominate the biological activity. Despite their relatively limited distribution, the alkaloids probably have the most significant impact in human history particularly in medicine, soc ...
Irreversible Inhibitors of Serine, Cysteine, and Threonine Proteases
Irreversible Inhibitors of Serine, Cysteine, and Threonine Proteases

University of Groningen Citrate driven transamination for
University of Groningen Citrate driven transamination for

... citrate with one proton and exchange of divalent citrate with monovalent L-lactate (Fig. 2) (2, 3, 57, 64). Since the former was much slower than the latter, it was concluded that CitP is a symporter that has been optimized to catalyze exchange under physiological conditions during citrate/carbohydr ...
Application of Novel Phosphine Ligands in Palladium
Application of Novel Phosphine Ligands in Palladium

... molecules possessing various functional groups, for instance, requires mild reaction conditions, selective reagents and therefore often selective catalysts. A homogeneous catalyst may be able to be active at low temperature and promote one specific transformation on such a molecule, neglecting other ...
An investigation of protective formulations containing
An investigation of protective formulations containing

... It  is  well  known  that  feces  and  urine  are  two  factors  that  affect  the  skin  in  a  negative  way  and   together   they  can  cause  skin  irritation,  dermatitis.  The  biggest  difference  between  an  adult  skin  a ...
Chapter 6 Amines and Amides
Chapter 6 Amines and Amides

... Nomenclature of Amines • Simple 1°, 2°, and 3° amines: common (trivial) names are obtained by alphabetically arranging the names of the alkyl substituents on the nitrogen and adding the suffix -amine (e.g., ethylmethylamine). • Amines in the IUPAC system: the “e” ending of the alkane name for the lo ...
Facile and green production of aqueous graphene dispersions for
Facile and green production of aqueous graphene dispersions for

... Waals interactions.10 A commonly used approach to make aqueous graphene dispersions is by liquid-exfoliation of graphite in water using a sonication procedure.11 However, some exogenous materials (e.g. organic solvents,12 ionic liquids,13 and surfactants14) and sometimes additional experimental step ...
DEVELOPMENT OF LACTIC ACID PRODUCTION
DEVELOPMENT OF LACTIC ACID PRODUCTION

... fermentation of L-(+)-lactic acid (lactate) was carried out using the electrodeionization (EDI) technique. The effect of initial lactate concentrations on microbial growth was initially investigated. A mathematical simulation of the product inhibition was successfully illustrated. It was found that ...
Organic Acid
Organic Acid

... Some long chain carboxylic acids are obtained by the hydrolysis of triglycerides obtained from plant or animal oils. These methods are related to soap making. fermentation of ethanol is used in the production of vinegar. 5 – 2 - Laboratory methods Preparative methods for small scale reactions for re ...
What is Cholesterol?......cont. - Home
What is Cholesterol?......cont. - Home

... The Fate of Unused LDL • The regulated receptors on the liver will help return some of the cholesterol to the liver from unused LDL. . • LDL is the so-called “bad cholesterol” and genetic differences in these regulated receptors can result in the accumulation or large amounts of LDL in the circulat ...
Structure and Function of Thymosin β4
Structure and Function of Thymosin β4

... procedures, proteolytic digestion, and a Beckman 890C sequencer.4 Upon reaction with dansyl chloride or phenylisothiocyanate thymosin β4 did not yield an α-amino acid derivative. This indicates that the NH2 terminus is blocked by an acetyl group. Tryptic digestion gave two peptides which lacked a fr ...
Classification and Nomenclature of Amines
Classification and Nomenclature of Amines

... • Salts of amines are generally white crystalline solids with high melting points. ...
Production of L-(+) Lactic Acid From Blackstrap Molasses by
Production of L-(+) Lactic Acid From Blackstrap Molasses by

Sample pages 1 PDF
Sample pages 1 PDF

... giving rise to ester or amide synthesis, has been particularly well investigated using enzymes in solvent systems of low water activity. The special methodologies involved in this latter type of reaction are described in Sect. 3.1. Other, more complex applications of hydrolases, such as those involv ...
Full-Text PDF
Full-Text PDF

... ricin and this work reported a molecular weight of approximately 62,766 Da [16]. In addition to analysis on purified ricin, matrix assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF/MS) of intact ricin was also reported using crude extracts from castor beans [17]. Altho ...
Evidence for Several Cysteine Transport Mechanisms in the
Evidence for Several Cysteine Transport Mechanisms in the

... We then measured the rate of [35S]cysteine uptake by isolated mitochondria in the first 20 s at 18 different concentrations of external cysteine (0–1,000 mM, Fig. 2C). Within the concentration range tested, cysteine uptake by isolated plant mitochondria displayed at least two phases of kinetics. The ...
COMPARATIVE EVALUATION OF TCF BLEACHED
COMPARATIVE EVALUATION OF TCF BLEACHED

... (Varian ...
Chemistry.of Organic Compounds
Chemistry.of Organic Compounds

... the students majoring in chemistry are preparing themselves for industrial positions. Hence the practical applications and economic aspects of organic chemistry frequently are discussed in some detail. For some years textbooks have been published which present aliphatic and aromatic compounds simult ...
Amines and Amides
Amines and Amides

... 1939), who observed the antibacterial action of the red dye Protonsil; further researched showed that it was the metabolic byproduct, sulfanilamide, which was the active form. It prevents bacteria from synthesizing folic acid, which they need in order to grow. Bacterial enzymes synthesize folic acid ...
Regulation of Phenylalanine and Tyrosine
Regulation of Phenylalanine and Tyrosine

... NaCI, 5 ; MgS0,.7H,O, 0.5; pH 7.0. Cells for the preparation of enzymes were harvested in the lateexponential phase of growth by centrifugation. The yield was approximately 2.5 g wet weight cells per litre medium. The cells were stored at - 18 "C. Enzyme assays. Buffer A (50 mM-Tris/HCI, pH 7-7, con ...
University of Groningen To dehydrate or not Khusainov, Rustem
University of Groningen To dehydrate or not Khusainov, Rustem

... Nisin is a lantibiotic produced by Lactococcus lactis, which has been known since 1928 (Rogers,1928; Lubelski et al., 2008a). This antimicrobial peptide is active against various Gram-positive bacteria and has reached commercial success as a food preservative (Delves-Broughton et al., 1996). In addi ...
CO2 Capture from Flue gas using Amino acid salt
CO2 Capture from Flue gas using Amino acid salt

... from coal-fired power plants, so that it is almost completely free of this greenhouse gas. The most advanced techniques towards practical application are based on chemical absorption, where CO2 in the flue gas is chemically bond by a solvent, usually an aqueous solution of amines, resulting in a cle ...
direct synthesis of hydrogen peroxide from oxygen and hydrogen
direct synthesis of hydrogen peroxide from oxygen and hydrogen

... Figure 2 Chemical principle of the AO process........................................................................... 10 Figure 3 Schematic diagram of the AO process .......................................................................... 11 Figure 4 Flow sheet of a typical AO process for the p ...
Some pyridoxal analogs and their transamination with amino acids
Some pyridoxal analogs and their transamination with amino acids

... of the roles of vitamin Bg 'coenzymes in enzymic reactions has developed from several different types of experimental ap­ proaches. The approaches which will be emphasized in this review include investigations on nonenzymic model systems and studies of enzyme systems reacting with antagonists (carbo ...
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Peptide synthesis

In organic chemistry, peptide synthesis is the production of peptides, which are organic compounds in which multiple amino acids are linked via amide bonds, also known as peptide bonds. The biological process of producing long peptides (proteins) is known as protein biosynthesis.
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