Enzyme LG 09
... c. Competitive inhibitors change the enzyme's d. An enzyme's function depends on its 3D shape. tertiary structure; noncompetitive inhibitors e. Enzymes are used up in chemical reactions. cause polypeptide subunits to dissociate. 16. Which one of the following is true? d. Competitive inhibitors bind ...
... c. Competitive inhibitors change the enzyme's d. An enzyme's function depends on its 3D shape. tertiary structure; noncompetitive inhibitors e. Enzymes are used up in chemical reactions. cause polypeptide subunits to dissociate. 16. Which one of the following is true? d. Competitive inhibitors bind ...
Fatty acid productivity of Scenedesmus obliquus under nitrogen
... During the whole cultivation period, the biomass productivities of the mixotrophic culture exceeded the combination of the autotrophic and heterotrophic cultures. ...
... During the whole cultivation period, the biomass productivities of the mixotrophic culture exceeded the combination of the autotrophic and heterotrophic cultures. ...
Working With Enzymes - Southern Biological
... concentrations of the enzyme and the substrate are correct. Although enzymes are catalysts and therefore able to react many times, overall reaction rates can be increased by using more enzyme because it allows more substrate molecules to participate at any given time. Incorrect reaction conditions S ...
... concentrations of the enzyme and the substrate are correct. Although enzymes are catalysts and therefore able to react many times, overall reaction rates can be increased by using more enzyme because it allows more substrate molecules to participate at any given time. Incorrect reaction conditions S ...
21_Pentose phosphate pathway of carbohydrates metabolism
... action of the tripeptide glutathione (GSH) (maintains it in the reduced state). GSH in erythrocytes maintains hemoglobin in the reduced Fe(II) state necessary for oxygen binding. GSH also functions to eliminate H2O2 and organic peroxides. Peroxides can cause irreversible damage to hemoglobin and des ...
... action of the tripeptide glutathione (GSH) (maintains it in the reduced state). GSH in erythrocytes maintains hemoglobin in the reduced Fe(II) state necessary for oxygen binding. GSH also functions to eliminate H2O2 and organic peroxides. Peroxides can cause irreversible damage to hemoglobin and des ...
Structural Basis of Wnt Recognition by Frizzled
... XWnt8 has an unusual two-domain structure (Figure 2), and each domain extends a betastrand or ‘finger’, which ‘grasps’ the Fz8-CRD on opposite faces. Site 1 interaction is primarily mediated by a palmitoleic acid covalently attached to a conserved Serine at the tip of ‘thumb’, which binds within a ...
... XWnt8 has an unusual two-domain structure (Figure 2), and each domain extends a betastrand or ‘finger’, which ‘grasps’ the Fz8-CRD on opposite faces. Site 1 interaction is primarily mediated by a palmitoleic acid covalently attached to a conserved Serine at the tip of ‘thumb’, which binds within a ...
TAK1-binding protein 1 is a pseudophosphatase
... (TAK1-binding protein 1) and either TAB2 or the structurally related TAB3 [3]. The activation of TAK1 by LPS or IL-1 is thought to be triggered by the formation of Lys63 -linked polyubiquitinated TRAF6 (TNF-receptor-associated factor 6) and its interaction with the ring finger domains of TAB2 and TA ...
... (TAK1-binding protein 1) and either TAB2 or the structurally related TAB3 [3]. The activation of TAK1 by LPS or IL-1 is thought to be triggered by the formation of Lys63 -linked polyubiquitinated TRAF6 (TNF-receptor-associated factor 6) and its interaction with the ring finger domains of TAB2 and TA ...
Cloning, Characterization, and Expression of a G-Protein
... on their function are hampered by a paucity of data regarding the postsynaptic sites of action; hence, the identification and characterization of a leucokinin receptor would be of great value with respect to this. The CNS of the pond snail Lymnaea stagnalis is one of the best understood systems in t ...
... on their function are hampered by a paucity of data regarding the postsynaptic sites of action; hence, the identification and characterization of a leucokinin receptor would be of great value with respect to this. The CNS of the pond snail Lymnaea stagnalis is one of the best understood systems in t ...
An ACP-Independent Fatty Acid Synthesis Pathway in Archaea
... in the bacterial lineage. This has not only implications for archaeal physiology but also opens the possibility for the presence of ACP-independent FA synthesis in the cenancestor, which may have been endowed with FA-phospholipid membranes. Key words: fatty acid synthesis, acyl carrier protein, arch ...
... in the bacterial lineage. This has not only implications for archaeal physiology but also opens the possibility for the presence of ACP-independent FA synthesis in the cenancestor, which may have been endowed with FA-phospholipid membranes. Key words: fatty acid synthesis, acyl carrier protein, arch ...
Ypr140wp, `the yeast tafazzin`, displays a mitochondrial
... PC acyltransferase in mitochondria from S. cerevisiae that has not yet been evidenced. Recent results obtained by de Kroon et al. [11] suggest that a continuous equilibration of phosphatidylmonomethylethanolamine and phosphatidyldimethylethanolamine between the ER and mitochondria leads to the impor ...
... PC acyltransferase in mitochondria from S. cerevisiae that has not yet been evidenced. Recent results obtained by de Kroon et al. [11] suggest that a continuous equilibration of phosphatidylmonomethylethanolamine and phosphatidyldimethylethanolamine between the ER and mitochondria leads to the impor ...
Blood Glucose
... connecting peptide) → by trypsin-like and carboxypeptidase-like enzymes during transport from endoplasmic reticulum and package by Golgi apparatus → split into insulin and C peptide • Both insulin and C peptides are secreted by exocytosis in equimolar amounts • C peptide has 10% of insulin activity ...
... connecting peptide) → by trypsin-like and carboxypeptidase-like enzymes during transport from endoplasmic reticulum and package by Golgi apparatus → split into insulin and C peptide • Both insulin and C peptides are secreted by exocytosis in equimolar amounts • C peptide has 10% of insulin activity ...
Biochemistry Key Answers
... Chemiosmotic theory. 9. Rapa port laboring shunt pathway and its significance. 10. What are Nucleotides? Name any three biologically Important nucleotides and their importance. Short Answer Questions: 1. Why sucrose is called a non reducing disaccharide?2. Name the essential fatty acids. 3. Name any ...
... Chemiosmotic theory. 9. Rapa port laboring shunt pathway and its significance. 10. What are Nucleotides? Name any three biologically Important nucleotides and their importance. Short Answer Questions: 1. Why sucrose is called a non reducing disaccharide?2. Name the essential fatty acids. 3. Name any ...
Lipids WORD 1000 KB - Science Learning Hub
... referred to as saturated fat. If carbon–carbon double bonds are present in the fatty acid, it is said to be unsaturated. For example, olive oil contains a mixture of glyceryl fatty acid esters, which, on digestion, yield unsaturated fatty acids such as oleic, linoleic and linolenic. Oleic acid is ve ...
... referred to as saturated fat. If carbon–carbon double bonds are present in the fatty acid, it is said to be unsaturated. For example, olive oil contains a mixture of glyceryl fatty acid esters, which, on digestion, yield unsaturated fatty acids such as oleic, linoleic and linolenic. Oleic acid is ve ...
Griffith_155
... gives a baseline reading. PI-PLC activity is then eluted with the same buffer containing 50% ethylene glycol (by volume). Fractions containing PI-PLC activity are pooled, and the ethylene glycol is removed and the solution concentrated by ultrafiltration. Enzyme solutions are stored in 20 mM Tris-HC ...
... gives a baseline reading. PI-PLC activity is then eluted with the same buffer containing 50% ethylene glycol (by volume). Fractions containing PI-PLC activity are pooled, and the ethylene glycol is removed and the solution concentrated by ultrafiltration. Enzyme solutions are stored in 20 mM Tris-HC ...
Olanzapine Activates Hepatic Mammalian Target of Rapamycin
... which depleted hepatic glycogen reserves. OLZ caused similar effects in cultured HepG2 cells, as determined by Seahorse analysis. Metabolomic analysis indicated that OLZ increased hepatic concentrations of amino acids that can alter metabolism via the mTOR pathway; indeed, hepatic mTOR signaling was ...
... which depleted hepatic glycogen reserves. OLZ caused similar effects in cultured HepG2 cells, as determined by Seahorse analysis. Metabolomic analysis indicated that OLZ increased hepatic concentrations of amino acids that can alter metabolism via the mTOR pathway; indeed, hepatic mTOR signaling was ...
Essential Cell Biology (3rd ed.)
... Lipid Bilayers Are Impermeable to Solutes and Ions The hydrophobic interior of the lipid bilayer creates a barrier to the passage of most hydrophilic molecules, including ions. They are as reluctant to enter a fatty environment as hydrophobic molecules are reluctant to enter water. But given enough ...
... Lipid Bilayers Are Impermeable to Solutes and Ions The hydrophobic interior of the lipid bilayer creates a barrier to the passage of most hydrophilic molecules, including ions. They are as reluctant to enter a fatty environment as hydrophobic molecules are reluctant to enter water. But given enough ...
evaluation of cirrhosis liver disease via protein-protein
... methods for clarifications of datasets(42). Further understanding of these very important and complicated pathways, including surrounding modulators, is essential for application in clinical settings. Recent studies have indicated that MAPK signaling pathways play key roles and have potential as the ...
... methods for clarifications of datasets(42). Further understanding of these very important and complicated pathways, including surrounding modulators, is essential for application in clinical settings. Recent studies have indicated that MAPK signaling pathways play key roles and have potential as the ...
biochemistry national board exam review
... 54. Polyuridylic acid in a cell-free system capable of protein synthesis results in production of polyphenylalanine. In this system, polyuridylic acid functions as A. B. C. D. E. ...
... 54. Polyuridylic acid in a cell-free system capable of protein synthesis results in production of polyphenylalanine. In this system, polyuridylic acid functions as A. B. C. D. E. ...
Taxonomy, biology and physiology of fungi
... The major polysaccharides of cell wall matrix consist of glucans such as manans, chitosan, and galactans ...
... The major polysaccharides of cell wall matrix consist of glucans such as manans, chitosan, and galactans ...
BIOCHEMISTRY NATIONAL BOARD EXAM REVIEW
... 54. Polyuridylic acid in a cell-free system capable of protein synthesis results in production of polyphenylalanine. In this system, polyuridylic acid functions as A. B. C. D. E. ...
... 54. Polyuridylic acid in a cell-free system capable of protein synthesis results in production of polyphenylalanine. In this system, polyuridylic acid functions as A. B. C. D. E. ...
autonomic nervous system
... Dopamine has been used as a neurotransmitter since the beginning of nerve system evolution. There are two main groups of adrenergic receptors, α and β, with several subtypes. ...
... Dopamine has been used as a neurotransmitter since the beginning of nerve system evolution. There are two main groups of adrenergic receptors, α and β, with several subtypes. ...
4.5 Regulation and Variability of Signaling by Nuclear Receptors
... Fig. 4.7 Structure of the RXR-T3R heterodimer in complex with DNA. Illustrated is a complex between the DNA binding domain of the RXR-T3R heterodimer and an HRE with direct repeats of the sequence AGGTCA separated by 4 base pairs. The two receptor subunits contact the hexameric sequences with a rec ...
... Fig. 4.7 Structure of the RXR-T3R heterodimer in complex with DNA. Illustrated is a complex between the DNA binding domain of the RXR-T3R heterodimer and an HRE with direct repeats of the sequence AGGTCA separated by 4 base pairs. The two receptor subunits contact the hexameric sequences with a rec ...
BS11 Final Exam Answer Key Spring `98
... (6 pt) C) Do you suppose the corrective factor in the medium from Hurler's syndrome cells is taken up by the Hunter's syndrome cells? If yes, how? If no, how does the corrective factor work? Include in your answer why the above treatments inactivate the corrective factors. Ans: Yes. The periodate an ...
... (6 pt) C) Do you suppose the corrective factor in the medium from Hurler's syndrome cells is taken up by the Hunter's syndrome cells? If yes, how? If no, how does the corrective factor work? Include in your answer why the above treatments inactivate the corrective factors. Ans: Yes. The periodate an ...
EnzymesLect1 2014
... acids, which folds in a particular fashion to produce a three-dimensional product. Individual monomers may then combine via non-covalent interactions to form a multimeric protein. Many enzymes can be unfolded or inactivated by heating, which destroys the threedimensional structure of the protein. Ac ...
... acids, which folds in a particular fashion to produce a three-dimensional product. Individual monomers may then combine via non-covalent interactions to form a multimeric protein. Many enzymes can be unfolded or inactivated by heating, which destroys the threedimensional structure of the protein. Ac ...
Review Questions for Advanced Biochemistry Course
... 31. Which of the following statements about the TCA cycle is CORRECT? A. Citrate is frequently used for gluconeogenesis in the liver B. The production of oxaloacetate by pyruvate carboxylase is one of several anaplerotic reactions for the TCA cycle C. Succinyl CoA is used to create a neurotransmitte ...
... 31. Which of the following statements about the TCA cycle is CORRECT? A. Citrate is frequently used for gluconeogenesis in the liver B. The production of oxaloacetate by pyruvate carboxylase is one of several anaplerotic reactions for the TCA cycle C. Succinyl CoA is used to create a neurotransmitte ...
Enzymes - WordPress.com
... The active site of an enzyme binds the substrate molecule(s) of a biochemical reaction, and is critical to its specificity and catalytic activity. Many enzymes are specific for just one reaction. For example, catalase only catalyzes the breakdown of hydrogen peroxide, a toxic by-product of metabolis ...
... The active site of an enzyme binds the substrate molecule(s) of a biochemical reaction, and is critical to its specificity and catalytic activity. Many enzymes are specific for just one reaction. For example, catalase only catalyzes the breakdown of hydrogen peroxide, a toxic by-product of metabolis ...
Lipid signaling
Lipid signaling, broadly defined, refers to any biological signaling event involving a lipid messenger that binds a protein target, such as a receptor, kinase or phosphatase, which in turn mediate the effects of these lipids on specific cellular responses. Lipid signaling is thought to be qualitatively different from other classical signaling paradigms (such as monoamine neurotransmission) because lipids can freely diffuse through membranes (see osmosis.) One consequence of this is that lipid messengers cannot be stored in vesicles prior to release and so are often biosynthesized ""on demand"" at their intended site of action. As such, many lipid signaling molecules cannot circulate freely in solution but, rather, exist bound to special carrier proteins in serum.