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B2 - Enzymes
... B2 - Enzymes Starter: Which of these uses enzymes? Answer: Photosynthesis, digestion, respiration and biological washing powders all use enzymes! ...
... B2 - Enzymes Starter: Which of these uses enzymes? Answer: Photosynthesis, digestion, respiration and biological washing powders all use enzymes! ...
Molecular Interactions in Cell events
... Enzyme inhibition is often how drugs work – targeting enzymes specific to other organisms, not humans ...
... Enzyme inhibition is often how drugs work – targeting enzymes specific to other organisms, not humans ...
Regulation of Transcription
... of a group of genes (i.e. heat shock proteins) A single gene may be regulated by a number of independent transcription factors (i.e. metallothionine) Eukaryotic regulation does not seem to involve repression To achieve high levels of expression, several different transcription factors binding to dif ...
... of a group of genes (i.e. heat shock proteins) A single gene may be regulated by a number of independent transcription factors (i.e. metallothionine) Eukaryotic regulation does not seem to involve repression To achieve high levels of expression, several different transcription factors binding to dif ...
2-7 Active-Site Geometry
... orientation and the collision will be non-productive. Thus, if both molecules first bind to an enzyme active site, and do so in such a way that their reactive portions are juxtaposed, the probability of a reaction is optimized. In solution, when two molecules collide but do not react they bounce off ...
... orientation and the collision will be non-productive. Thus, if both molecules first bind to an enzyme active site, and do so in such a way that their reactive portions are juxtaposed, the probability of a reaction is optimized. In solution, when two molecules collide but do not react they bounce off ...
poster - Computer Science and Engineering
... phosphorylation sites have been proposed, including motif-based methods that rely on PSSMs and HMMs. However, it is unclear how the different motif-based approaches compare with each other. ...
... phosphorylation sites have been proposed, including motif-based methods that rely on PSSMs and HMMs. However, it is unclear how the different motif-based approaches compare with each other. ...
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI
... (b) Discuss the substrate specificity of enzymes and the different ways in which substrate can be affected when at the active site. 22(a) Describe zymogens with suitable examples. OR (b) Write notes on: (i) Catalytic mechanism of tryptophan synthase (ii) Substrate binding by chymotrypsin and trypsin ...
... (b) Discuss the substrate specificity of enzymes and the different ways in which substrate can be affected when at the active site. 22(a) Describe zymogens with suitable examples. OR (b) Write notes on: (i) Catalytic mechanism of tryptophan synthase (ii) Substrate binding by chymotrypsin and trypsin ...
Document
... behavior of many enzymes. Each enzyme has a Km value that is characteristic of that enzyme under certain conditions. ...
... behavior of many enzymes. Each enzyme has a Km value that is characteristic of that enzyme under certain conditions. ...
Lehninger Principles of Biochemistry 5/e
... Unlik e deep diving whales, which use myoglobin to store O2 in muscle, crocodil es rely on a unique allo steric effector of Hb to ensure deliv ery of O2 to tissues. While submerged, metabolism produces CO2, which is converted to HCO3 and it is the HCO3 that acts as the allost eric effector by bind ...
... Unlik e deep diving whales, which use myoglobin to store O2 in muscle, crocodil es rely on a unique allo steric effector of Hb to ensure deliv ery of O2 to tissues. While submerged, metabolism produces CO2, which is converted to HCO3 and it is the HCO3 that acts as the allost eric effector by bind ...
Lect2(Enzim
... hexokinase 1010 phosphorylase 3.1011 alcohol dehydrogenase 2.108 creatine kinase 104. ...
... hexokinase 1010 phosphorylase 3.1011 alcohol dehydrogenase 2.108 creatine kinase 104. ...
Co-enzyme
... results from the shape of the enzyme –due to a compatible fit between the active site and the substrate • The substrate binds to the “active site” of the ...
... results from the shape of the enzyme –due to a compatible fit between the active site and the substrate • The substrate binds to the “active site” of the ...
COURSE DETAILS: E INTRODUCTION Metabolism can be defined
... inhibition pattern and the inhibitor does not bear any obvious structural relationship to the substrate. The enzyme exhibits extreme specificity with regard to the regulator molecule. (5) Allosteric enzymes have an oligomeric organization. They are composed of more than one polypeptide chain and hav ...
... inhibition pattern and the inhibitor does not bear any obvious structural relationship to the substrate. The enzyme exhibits extreme specificity with regard to the regulator molecule. (5) Allosteric enzymes have an oligomeric organization. They are composed of more than one polypeptide chain and hav ...
Enzyme Power Point
... effect of the following on its rate of reaction (1) no change (2) increase (3) decrease A. 2, 1 Increasing the concentration of sucrose B. 3 Changing the pH to 4 C. 3 Running the reaction at 70°C ...
... effect of the following on its rate of reaction (1) no change (2) increase (3) decrease A. 2, 1 Increasing the concentration of sucrose B. 3 Changing the pH to 4 C. 3 Running the reaction at 70°C ...
Test 2
... Competitive and Uncompetititve inhibitors can differentiated using a Lineweaver-Burke analysis of Vo data obtained under different inhibitor concentrations. Since a competitive inhibitor can be competed off by high substrate concentrations, all lines obtained at different [S] concentrations will con ...
... Competitive and Uncompetititve inhibitors can differentiated using a Lineweaver-Burke analysis of Vo data obtained under different inhibitor concentrations. Since a competitive inhibitor can be competed off by high substrate concentrations, all lines obtained at different [S] concentrations will con ...
MB207_12 - MB207Jan2010
... • Each compartment or organelle contains its own characteristic of enzymes and other specialized molecules, and complex distribution systems transport specific products from one compartment to another. → protein (enzymes, transporters, surface markers) • 10 000 – 20 000 proteins are synthesized in t ...
... • Each compartment or organelle contains its own characteristic of enzymes and other specialized molecules, and complex distribution systems transport specific products from one compartment to another. → protein (enzymes, transporters, surface markers) • 10 000 – 20 000 proteins are synthesized in t ...
factors_effecting_en..
... As the substrate concentration increases, the rate increases because more substrate molecules can collide with enzyme molecules, so more reactions will take place. At higher concentrations the enzyme molecules become saturated with substrate, so there are few free enzyme molecules, so adding more su ...
... As the substrate concentration increases, the rate increases because more substrate molecules can collide with enzyme molecules, so more reactions will take place. At higher concentrations the enzyme molecules become saturated with substrate, so there are few free enzyme molecules, so adding more su ...
LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
... What is the role of nicotinamide adenine dinucleotide in an enzyme reaction? Why is it important to maintain a specific pH for each enzyme reaction? Explain P.C. Stemmer’s first experiment with in vitro recombination. What is the application of alkaline phosphatase in genetic engineering? What is th ...
... What is the role of nicotinamide adenine dinucleotide in an enzyme reaction? Why is it important to maintain a specific pH for each enzyme reaction? Explain P.C. Stemmer’s first experiment with in vitro recombination. What is the application of alkaline phosphatase in genetic engineering? What is th ...
Regulation of Glycogen Metabolism
... as glycogen in the liver and the muscles, Insulin also promotes converting glucose into triacylglycerides and the storage of triacylglycerides in the adipose tissue. Insulin also promotes protein synthesis in skeletal muscle. Insulin also promotes utilization of glucose as fuel. The release of insul ...
... as glycogen in the liver and the muscles, Insulin also promotes converting glucose into triacylglycerides and the storage of triacylglycerides in the adipose tissue. Insulin also promotes protein synthesis in skeletal muscle. Insulin also promotes utilization of glucose as fuel. The release of insul ...
Chapter 8 Enzyme PPT
... Competitive inhibitor: binds to the active site of an enzyme, competes with substrate Noncompetitive inhibitor: binds to another part of an enzyme enzyme changes shape active site is nonfunctional ...
... Competitive inhibitor: binds to the active site of an enzyme, competes with substrate Noncompetitive inhibitor: binds to another part of an enzyme enzyme changes shape active site is nonfunctional ...
Enzyme - kyoussef-mci
... (1)Increase the number of substrate molecules in solution (increase conc’n) (2)Increase the number of enzymes in solution (increase conc’n) (3)Increase the temperature of the solution (up to a certain point) ...
... (1)Increase the number of substrate molecules in solution (increase conc’n) (2)Increase the number of enzymes in solution (increase conc’n) (3)Increase the temperature of the solution (up to a certain point) ...
Receptors as drug targets
... responsible for activating proteins called G-proteins. • These G-proteins act as signal proteins because they are capable of activating or deactivating membrane-bound enzymes. • The receptor is embedded within the membrane, with the binding site for the chemical messenger exposed on the outer surfac ...
... responsible for activating proteins called G-proteins. • These G-proteins act as signal proteins because they are capable of activating or deactivating membrane-bound enzymes. • The receptor is embedded within the membrane, with the binding site for the chemical messenger exposed on the outer surfac ...
Full_ppt_ch21
... concentration increases the rate of reaction (enzyme concentration is constant) • Maximum activity reached when all of enzyme combines with substrate ...
... concentration increases the rate of reaction (enzyme concentration is constant) • Maximum activity reached when all of enzyme combines with substrate ...
CHAPTER 1 - Portal UniMAP
... Effect of pH on Enzyme Kinetics -Enzyme are active only over small range of pH due to: the active site functional group charges (ionic form) the three dimensional shape of enzyme are pHdependent -these ionic group on active sites must be in a suitable form (acid or base) to function. -Variation ...
... Effect of pH on Enzyme Kinetics -Enzyme are active only over small range of pH due to: the active site functional group charges (ionic form) the three dimensional shape of enzyme are pHdependent -these ionic group on active sites must be in a suitable form (acid or base) to function. -Variation ...
Ultrasensitivity
![](https://commons.wikimedia.org/wiki/Special:FilePath/Ultrasensitivity.png?width=300)
In molecular biology, ultrasensitivity describes an output response that is more sensitive to stimulus change than the hyperbolic Michaelis-Menten response. Ultrasensitivity is one of the biochemical switches in the cell cycle and has been implicated in a number of important cellular events, including exiting G2 cell cycle arrests in Xenopus laevis oocytes, a stage to which the cell or organism would not want to return.Ultrasensitivity is a cellular system which triggers entry into a different cellular state. Ultrasensitivity gives a small response to first input signal, but an increase in the input signal produces higher and higher levels of output. This acts to filter out noise, as small stimuli and threshold concentrations of the stimulus (input signal) is necessary for the trigger which allows the system to get activated quickly. Ultrasensitive responses are represented by sigmoidal graphs, which resemble cooperativity. Quantification of ultrasensitivity is often approximated by the Hill equation (biochemistry):Response= Stimulus^n/(EC50^n+Stimulus^n)Where Hill's coefficient (n) may represent quantitative measure of ultrasensitive response.