Lecture 1: Key Concepts in Stereoselective Synthesis
... -In this carbonyl addition reaction, MgBr2 and MgBr(OiPr) are formed. These Lewis acids promote the background reaction to form the racemic product and thus lower the enantioselectivity of the process. Addition and chelation of DBMAEE to the in situ generated MgBr2 and MgBr(OiPr) suppress their acti ...
... -In this carbonyl addition reaction, MgBr2 and MgBr(OiPr) are formed. These Lewis acids promote the background reaction to form the racemic product and thus lower the enantioselectivity of the process. Addition and chelation of DBMAEE to the in situ generated MgBr2 and MgBr(OiPr) suppress their acti ...
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... those of the original eIF4GI were detected in the immunoprecipitates. [Figure 2A, lower panel; compare lanes 2 and 3; the expression of HA-extended eIF4GI in the whole cell is one-fifth of that of the original eIF4GI, for unknown reasons. In addition, the extended eIF4GI could not be extracted with ...
... those of the original eIF4GI were detected in the immunoprecipitates. [Figure 2A, lower panel; compare lanes 2 and 3; the expression of HA-extended eIF4GI in the whole cell is one-fifth of that of the original eIF4GI, for unknown reasons. In addition, the extended eIF4GI could not be extracted with ...
Molecular Orbitals
... Molecular Orbitals of Complexes Group theory is also used to construct molecular orbital diagrams for the complexes of metal atoms or ions. The symmetry combinations of the atomic orbitals on the ligands are determined, and then “matched” with appropriate atomic orbitals on the central metal. Both ...
... Molecular Orbitals of Complexes Group theory is also used to construct molecular orbital diagrams for the complexes of metal atoms or ions. The symmetry combinations of the atomic orbitals on the ligands are determined, and then “matched” with appropriate atomic orbitals on the central metal. Both ...
Glycolysis
... provides the electrons and enough reduction potential to do the job. In fact, consuming NADH is the main goal of this reaction. Cellular levels of NAD+/NADH are limited, and oxidation of NADH back to NAD+, provides an ongoing supply of this reactant for continued oxidation of GAP and continued produ ...
... provides the electrons and enough reduction potential to do the job. In fact, consuming NADH is the main goal of this reaction. Cellular levels of NAD+/NADH are limited, and oxidation of NADH back to NAD+, provides an ongoing supply of this reactant for continued oxidation of GAP and continued produ ...
The phosphopantetheinyl transferases
... through a reactive thioester linkage. PPant is thought of as a “prosthetic arm” on which all substrates and intermediates of these pathways are covalently yet transiently held during the orderly progression of enzymatic modications to the extending chain. PPTases mediate the transfer and covalent a ...
... through a reactive thioester linkage. PPant is thought of as a “prosthetic arm” on which all substrates and intermediates of these pathways are covalently yet transiently held during the orderly progression of enzymatic modications to the extending chain. PPTases mediate the transfer and covalent a ...
THE SHIKIMATE PATHWAY: AROMATIC AMINO ACIDS AND
... reductase to give dihydrofolic acid and then tetrahydrofolic acid (Figure 4.6). Tetrahydrofolic acid then functions as a carrier of one-carbon groups, which may be in the form of methyl, methylene, methenyl, or formyl groups, by the reactions outlined in Figure 4.7. These groups are involved in amin ...
... reductase to give dihydrofolic acid and then tetrahydrofolic acid (Figure 4.6). Tetrahydrofolic acid then functions as a carrier of one-carbon groups, which may be in the form of methyl, methylene, methenyl, or formyl groups, by the reactions outlined in Figure 4.7. These groups are involved in amin ...
Modulation of functional properties of bifunctional S- Adenosylmethionine decarboxylase/Ornithine decarboxylase of
... 2.10: The WT, A/OpG1 and A/OpG1G2 proteins after minimization and molecular dynamics..... 44 3.1: AdoMetDC and ODC activity in the PfAdoMetDC/ODC after deletion mutagenesis........... 50 3.2: The mutagenic primer positions on the parasite-specific inserts............................................. ...
... 2.10: The WT, A/OpG1 and A/OpG1G2 proteins after minimization and molecular dynamics..... 44 3.1: AdoMetDC and ODC activity in the PfAdoMetDC/ODC after deletion mutagenesis........... 50 3.2: The mutagenic primer positions on the parasite-specific inserts............................................. ...
Substituent Effect in the γ–Position of Acetylacetonate on the
... other solvent parameters were rejected based on the statistical criteria explained in the experimental section. A cross-validation methodology was also carried out for choosing prediction power of the proposed model for all complexes. The cross-validation methodology is essential since a model with ...
... other solvent parameters were rejected based on the statistical criteria explained in the experimental section. A cross-validation methodology was also carried out for choosing prediction power of the proposed model for all complexes. The cross-validation methodology is essential since a model with ...
Chemistry 1250 - Sp17 Solutions for Midterm 1
... For molecular compounds the less electronegative element is generally written first in the formula and is named first in the name. The second element (more electronegative element) in the formula is named by using the stem of the name and the suffix -ide. Numerical prefixes, indicating the numbers o ...
... For molecular compounds the less electronegative element is generally written first in the formula and is named first in the name. The second element (more electronegative element) in the formula is named by using the stem of the name and the suffix -ide. Numerical prefixes, indicating the numbers o ...
document
... When amylase reacts with starch, it cuts off the disaccharide maltose (two glucose molecules linked together). As the reaction progresses, less starch will be present and more sugar (maltose) will be present.” (2) This helps explain why starch breakdown begins in the mouth; amylase is found in human ...
... When amylase reacts with starch, it cuts off the disaccharide maltose (two glucose molecules linked together). As the reaction progresses, less starch will be present and more sugar (maltose) will be present.” (2) This helps explain why starch breakdown begins in the mouth; amylase is found in human ...
Extending the limits of paleodietary studies of humans with
... very broad range because of isotopic fractionations that occur during biosynthesis. Enzymes discriminate against isotopically heavy carbon isotopes, and amino acids that are synthesized through multiple enzymatic steps are isotopically depleted, i.e. have lower 13C values. In plants, certain of the ...
... very broad range because of isotopic fractionations that occur during biosynthesis. Enzymes discriminate against isotopically heavy carbon isotopes, and amino acids that are synthesized through multiple enzymatic steps are isotopically depleted, i.e. have lower 13C values. In plants, certain of the ...
![Comparison of Ligand-Binding Sites of Modeled Apo[a] Kringle](http://s1.studyres.com/store/data/022146975_1-ba8d6ebf00813a811b124aa3a02c9785-300x300.png)
Comparison of Ligand-Binding Sites of Modeled Apo[a] Kringle
... crystallographic structure of PGK4 in evaluating the putative ligand-binding sites of the apo[a] kringle-like sequences. Thus, the coordinates of PGK435 were used to generate molecular graphic models of the apo[a] PGK4-like kringles. In PGK4, the ligand-binding site, which has both dipolar and hydro ...
... crystallographic structure of PGK4 in evaluating the putative ligand-binding sites of the apo[a] kringle-like sequences. Thus, the coordinates of PGK435 were used to generate molecular graphic models of the apo[a] PGK4-like kringles. In PGK4, the ligand-binding site, which has both dipolar and hydro ...
Lecture 1 - "Hudel" Luecke
... This is the sequence of hexokinase, yeast hexokinase from the yeast species Saccharomyces cerevisiae to be specific. To find out more about this protein, jump to the Brookhaven Protein Data Bank 3D browser and enter hexokinase in the textbox, or SCOP (Structural Classification of Proteins) and use t ...
... This is the sequence of hexokinase, yeast hexokinase from the yeast species Saccharomyces cerevisiae to be specific. To find out more about this protein, jump to the Brookhaven Protein Data Bank 3D browser and enter hexokinase in the textbox, or SCOP (Structural Classification of Proteins) and use t ...
THE APPLICATION OF TANDEM MASS SPECTROMETRY TO
... water. In some applications, a small quantity of a volatile low-molecular-weight organic acid (formic acid) is added to assist in protonation and ionization. For analysis, small aliquots of each reconstituted specimen are injected approximately every 2–3 min into a flowing stream of solvent. The str ...
... water. In some applications, a small quantity of a volatile low-molecular-weight organic acid (formic acid) is added to assist in protonation and ionization. For analysis, small aliquots of each reconstituted specimen are injected approximately every 2–3 min into a flowing stream of solvent. The str ...
Cellular Respiration
... course. Instead, if you swallow some glucose, enzymes in your cells will lower the barrier of activation energy allowing the sugar to be oxidized in a series of steps. ...
... course. Instead, if you swallow some glucose, enzymes in your cells will lower the barrier of activation energy allowing the sugar to be oxidized in a series of steps. ...
Structurally simple
... carcerands or hemicarcerands). Adsorption into the space generated between molecules in the solid-state is also quite common. Of course, there are many systems that have been shown to physically adsorb carbon dioxide (and other gases) without having been structurally characterized. These will not be ...
... carcerands or hemicarcerands). Adsorption into the space generated between molecules in the solid-state is also quite common. Of course, there are many systems that have been shown to physically adsorb carbon dioxide (and other gases) without having been structurally characterized. These will not be ...
Noble metal nanoparticles for water purification
... sulfadiazine, silver citrate, silver lactate, etc. A number of products based on silver were also commercialized throughout the 20th century (Katadyn, Argyrol, Movidyn, Tetrasil, Alagon, etc.) [26]. Attempts were also made to immobilize silver in zerovalent form on activated carbon and subsequently ...
... sulfadiazine, silver citrate, silver lactate, etc. A number of products based on silver were also commercialized throughout the 20th century (Katadyn, Argyrol, Movidyn, Tetrasil, Alagon, etc.) [26]. Attempts were also made to immobilize silver in zerovalent form on activated carbon and subsequently ...
Natural abundance of 15N in amino acids and
... by leguminous plants was small (−0.2 to −2‰) when whole plant N was considered ( Yoneyama et al., 1986). However, the analysis of natural 15N abundance in the different tissues of leguminous plants has revealed that nodules, in some instances, had very high d15N values, while other plant tissues onl ...
... by leguminous plants was small (−0.2 to −2‰) when whole plant N was considered ( Yoneyama et al., 1986). However, the analysis of natural 15N abundance in the different tissues of leguminous plants has revealed that nodules, in some instances, had very high d15N values, while other plant tissues onl ...
Process Optimization to Prepare High-purity
... hazardous metal elements may be included in them. It is reported that alkali metal impurities of K and Na cause the remained carbons in ashes, which are originated in organics of husks. This is because the eutectic reaction between the alkali metals and SiO2 element occurs in burning, and the carbon ...
... hazardous metal elements may be included in them. It is reported that alkali metal impurities of K and Na cause the remained carbons in ashes, which are originated in organics of husks. This is because the eutectic reaction between the alkali metals and SiO2 element occurs in burning, and the carbon ...
Preparation and structural characterization of group 1 metal
... These results indicate that the phosphorus donor in [OPO]Li2(DME)2 is bound to only one rather than two lithium atoms at low temperatures. As the temperature increases, a rapid exchange occurs, which likely involves phosphine dissociation from the coordinated lithium atom followed by exchange of the ...
... These results indicate that the phosphorus donor in [OPO]Li2(DME)2 is bound to only one rather than two lithium atoms at low temperatures. As the temperature increases, a rapid exchange occurs, which likely involves phosphine dissociation from the coordinated lithium atom followed by exchange of the ...
Honors Chemistry Lab Fall
... the size of a carbon atom. Knowing the size of a carbon atom, we can compute its volume; and if we know the volume occupied by a mole of carbon (in the form of a diamond), we can divide the volume of a mole of carbon by the volume of an atom of carbon to get an estimate of Avogadro's number. ...
... the size of a carbon atom. Knowing the size of a carbon atom, we can compute its volume; and if we know the volume occupied by a mole of carbon (in the form of a diamond), we can divide the volume of a mole of carbon by the volume of an atom of carbon to get an estimate of Avogadro's number. ...
Metalloprotein
Metalloprotein is a generic term for a protein that contains a metal ion cofactor. A large number of all proteins are part of this category.