Proteins
... sheet are tight turns called beta turns, which usually contain amino acids with very small side chains, such as glycine. ...
... sheet are tight turns called beta turns, which usually contain amino acids with very small side chains, such as glycine. ...
08_DetailLectOut_jkAR
... majority of organic molecules to make it over the hump of activation energy. ...
... majority of organic molecules to make it over the hump of activation energy. ...
Proteins - NIU Department of Biological Sciences
... sheet are tight turns called beta turns, which usually contain amino acids with very small side chains, such as glycine. ...
... sheet are tight turns called beta turns, which usually contain amino acids with very small side chains, such as glycine. ...
Enzymes of the Calvin Cycle and Intermediary
... phosphate cycle and the glycolytic pathway, had specific activities which did not vary with dilution rate and, moreover, showed similar levels [7 to 8 nmol substrate converted min-l (mg protein)-'] whether the organisms were grown under light- or C0,-limited conditions (Fig. 4a, b). Malate dehydroge ...
... phosphate cycle and the glycolytic pathway, had specific activities which did not vary with dilution rate and, moreover, showed similar levels [7 to 8 nmol substrate converted min-l (mg protein)-'] whether the organisms were grown under light- or C0,-limited conditions (Fig. 4a, b). Malate dehydroge ...
Disciplina: SLC0673 Ciclos energéticos vitais
... denoted CoA-SH, to emphasize the role of the OSH group), nicotinamide adenine dinucleotide (NAD), and lipoate. Four different vitamins are required in human nutrition are vital components of this system: thiamine (in TPP), riboflavin (in FAD), niacin (in NAD), and pantothenate (in CoA). ...
... denoted CoA-SH, to emphasize the role of the OSH group), nicotinamide adenine dinucleotide (NAD), and lipoate. Four different vitamins are required in human nutrition are vital components of this system: thiamine (in TPP), riboflavin (in FAD), niacin (in NAD), and pantothenate (in CoA). ...
BCOR 11 Exploring Biology
... A) Cells are open systems, but a test tube is a closed system. B) Cells are less efficient at heat production than nonliving systems. C) The hydrolysis of ATP in a cell produces different chemical products than does the reaction in a test tube. D) The reaction in cells must be catalyzed by enzymes, ...
... A) Cells are open systems, but a test tube is a closed system. B) Cells are less efficient at heat production than nonliving systems. C) The hydrolysis of ATP in a cell produces different chemical products than does the reaction in a test tube. D) The reaction in cells must be catalyzed by enzymes, ...
Kinetic analysis of cooperativity of phosphorylated L
... reactions. First, L-PK catalyses the formation of pyruvate and ATP (Eq. 1). Secondly, the pyruvate formed in this reaction is used by LDH to form L-lactate converting simultaneously NADH into NAD+. The latter change can be followed spectrophotometrically, as absorbance of the solution strongly decre ...
... reactions. First, L-PK catalyses the formation of pyruvate and ATP (Eq. 1). Secondly, the pyruvate formed in this reaction is used by LDH to form L-lactate converting simultaneously NADH into NAD+. The latter change can be followed spectrophotometrically, as absorbance of the solution strongly decre ...
Exam 2 Practice #3
... When the reactants have more free energy than the products of a reaction, that reaction can be described as a. Exergonic e. A&C b. Endergonic f. A&D c. ΔG > 0 g. B&C d. ΔG < 0 ...
... When the reactants have more free energy than the products of a reaction, that reaction can be described as a. Exergonic e. A&C b. Endergonic f. A&D c. ΔG > 0 g. B&C d. ΔG < 0 ...
De niet-covalente interacties
... water molecules that surround the apolar surface in a stiff, ice-like structure. • The released water molecules have more possibilities to interact with other water molecules in solution. • This results in an increase of the entropy (S) of the water in: G = H TS. This results in a decrease in th ...
... water molecules that surround the apolar surface in a stiff, ice-like structure. • The released water molecules have more possibilities to interact with other water molecules in solution. • This results in an increase of the entropy (S) of the water in: G = H TS. This results in a decrease in th ...
Enantioselective -Hydroxylation of 2-Arylacetic Acid Derivatives and r
... hydroxylates long-chain fatty acids at the ω-1, ω-2, and ω-3 positions at high rates.9 BM-3 has provided an evolvable protein framework for obtaining modified or new activities. Rational design and directed evolution approaches have created BM-3 variants with activity on medium-chain fatty acids,10 ...
... hydroxylates long-chain fatty acids at the ω-1, ω-2, and ω-3 positions at high rates.9 BM-3 has provided an evolvable protein framework for obtaining modified or new activities. Rational design and directed evolution approaches have created BM-3 variants with activity on medium-chain fatty acids,10 ...
Biochemistry Review Reteach
... 27. Which is a true statement comparing phospholipids and triglycerides (fats and oils)? (a.) Both molecules contain a phosphate group. (b.) Triglycerides may be saturated or unsaturated, but all phospholipids are saturated. (c.) Phospholipids are the primary storage form for fats in our bodies. (d. ...
... 27. Which is a true statement comparing phospholipids and triglycerides (fats and oils)? (a.) Both molecules contain a phosphate group. (b.) Triglycerides may be saturated or unsaturated, but all phospholipids are saturated. (c.) Phospholipids are the primary storage form for fats in our bodies. (d. ...
Immobilized Enzyme Technology: Potentiality and Prospects
... to convert the substrates into the products within the desired time and space. NCF relates to the physical properties of the immobilized enzyme, such as shape, size and length of the selected carrier. CF is correlated with the biological activities of the enzyme such as substrate specificity, activi ...
... to convert the substrates into the products within the desired time and space. NCF relates to the physical properties of the immobilized enzyme, such as shape, size and length of the selected carrier. CF is correlated with the biological activities of the enzyme such as substrate specificity, activi ...
View Full PDF - Biochemical Society Transactions
... slopes of the primary double-reciprocal plots (of reaction rate against ATP concentration) as a function of inhibitor concentration were linear. When pyruvate was the variable substrate, however, non-linear-slope replots were obtained. Non-linear-slope effects normally reflect multiple combination o ...
... slopes of the primary double-reciprocal plots (of reaction rate against ATP concentration) as a function of inhibitor concentration were linear. When pyruvate was the variable substrate, however, non-linear-slope replots were obtained. Non-linear-slope effects normally reflect multiple combination o ...
Respiration
... 3. Baking industry uses CO2 released by yeast cells in alcoholic fermentation in raising the dough and making bread spongy. 4. Dairy industry produces yogurt, cheese and butter by fermenting milk sugar lactose into lactic acid by strepto coccus lacti. Lactic acid coagulates the milk protein casein a ...
... 3. Baking industry uses CO2 released by yeast cells in alcoholic fermentation in raising the dough and making bread spongy. 4. Dairy industry produces yogurt, cheese and butter by fermenting milk sugar lactose into lactic acid by strepto coccus lacti. Lactic acid coagulates the milk protein casein a ...
Ch06Test_File - Milan Area Schools
... 1. Cells cannot create energy because _______. Answer: energy cannot be created or destroyed 2. Variations of enzymes that allow organisms to adapt to changing environments are termed _______. Answer: isozymes 3. Although some enzymes consist entirely of one or more polypeptide chains, others posses ...
... 1. Cells cannot create energy because _______. Answer: energy cannot be created or destroyed 2. Variations of enzymes that allow organisms to adapt to changing environments are termed _______. Answer: isozymes 3. Although some enzymes consist entirely of one or more polypeptide chains, others posses ...
Isolation of Starch degrading bacteria Enzymes in Action
... possess cofactors. Common cofactors include metals such as Zn and Fe and organic molecules such as vitamins. Millions of enzymes, each with a specific role, are required in nature to break down compounds during the decomposition process (and make compounds in catabolic processes). By purifying thes ...
... possess cofactors. Common cofactors include metals such as Zn and Fe and organic molecules such as vitamins. Millions of enzymes, each with a specific role, are required in nature to break down compounds during the decomposition process (and make compounds in catabolic processes). By purifying thes ...
Energy, Catalysis, and Biosynthesis
... provides a means of direct exchange of material goods. For example, the owner of a cow may have excess milk and need eggs, whereas a chicken owner has excess eggs and needs milk. Provided that these two people are in close proximity and can communicate, they may exchange or barter eggs for milk. But ...
... provides a means of direct exchange of material goods. For example, the owner of a cow may have excess milk and need eggs, whereas a chicken owner has excess eggs and needs milk. Provided that these two people are in close proximity and can communicate, they may exchange or barter eggs for milk. But ...
Biochemistry Ch 37 696-706 [4-20
... to food proteins in infants Protein Turnover and Replenishment of the Intracellular Amino Acid Pool – intracellular amino acid pool is generated from dietary amino acids and from degradation of existing proteins within the cells. -All proteins have a half-life (t1/2) that determines degradation -if ...
... to food proteins in infants Protein Turnover and Replenishment of the Intracellular Amino Acid Pool – intracellular amino acid pool is generated from dietary amino acids and from degradation of existing proteins within the cells. -All proteins have a half-life (t1/2) that determines degradation -if ...
Chapter 20
... • An enzyme is a protein that acts as a biological catalyst. • Enzymes are incredibly selective for specific molecules. • An enzyme can speed up a biochemical reaction so that the rate is a million times faster than it would be in the absence of the enzyme. • Many reactions catalyzed by enzymes woul ...
... • An enzyme is a protein that acts as a biological catalyst. • Enzymes are incredibly selective for specific molecules. • An enzyme can speed up a biochemical reaction so that the rate is a million times faster than it would be in the absence of the enzyme. • Many reactions catalyzed by enzymes woul ...
Enzyme
Enzymes /ˈɛnzaɪmz/ are macromolecular biological catalysts. Enzymes accelerate, or catalyze, chemical reactions. The molecules at the beginning of the process are called substrates and the enzyme converts these into different molecules, called products. Almost all metabolic processes in the cell need enzymes in order to occur at rates fast enough to sustain life. The set of enzymes made in a cell determines which metabolic pathways occur in that cell. The study of enzymes is called enzymology.Enzymes are known to catalyze more than 5,000 biochemical reaction types. Most enzymes are proteins, although a few are catalytic RNA molecules. Enzymes' specificity comes from their unique three-dimensional structures.Like all catalysts, enzymes increase the rate of a reaction by lowering its activation energy. Some enzymes can make their conversion of substrate to product occur many millions of times faster. An extreme example is orotidine 5'-phosphate decarboxylase, which allows a reaction that would otherwise take millions of years to occur in milliseconds. Chemically, enzymes are like any catalyst and are not consumed in chemical reactions, nor do they alter the equilibrium of a reaction. Enzymes differ from most other catalysts by being much more specific. Enzyme activity can be affected by other molecules: inhibitors are molecules that decrease enzyme activity, and activators are molecules that increase activity. Many drugs and poisons are enzyme inhibitors. An enzyme's activity decreases markedly outside its optimal temperature and pH.Some enzymes are used commercially, for example, in the synthesis of antibiotics. Some household products use enzymes to speed up chemical reactions: enzymes in biological washing powders break down protein, starch or fat stains on clothes, and enzymes in meat tenderizer break down proteins into smaller molecules, making the meat easier to chew.