Aminoacids. Protein structure and properties.
... disrupting hydrogen bonds). Extremes of pH alter the net charges on the protein, causing electrostatic repulsion and the disruption of some hydrogen bonding. Organic solvents and detergents act primarily by disrupting hydrophobic ...
... disrupting hydrogen bonds). Extremes of pH alter the net charges on the protein, causing electrostatic repulsion and the disruption of some hydrogen bonding. Organic solvents and detergents act primarily by disrupting hydrophobic ...
Genes and Gene Action
... 15. People with cystic fibrosis inherit defective genetic information and cannot produce normal CFTR proteins. Scientists have used gene therapy to insert normal DNA segments that code for the missing CFTR protein into the lung cells of people with cystic fibrosis. Which statement does not describe ...
... 15. People with cystic fibrosis inherit defective genetic information and cannot produce normal CFTR proteins. Scientists have used gene therapy to insert normal DNA segments that code for the missing CFTR protein into the lung cells of people with cystic fibrosis. Which statement does not describe ...
投影片下載 - 資訊科學與工程學系
... sequences are the same. (3) Residues common at rat imidase and proteins of group3 or group4 but differ from that of group2, the score is set to 3. (4) Residues common at imidase and group2 proteins but differ from that of group3 or group4, the score is set to –2. (5) Residues common at sequence rela ...
... sequences are the same. (3) Residues common at rat imidase and proteins of group3 or group4 but differ from that of group2, the score is set to 3. (4) Residues common at imidase and group2 proteins but differ from that of group3 or group4, the score is set to –2. (5) Residues common at sequence rela ...
Protein Catabolism
... aspartate/oxaloacete. When aspartate binds to the active site of the enzyme the α-amino group displaces Lys-268 to form the external aldimine. The next step in the enzyme catalyzed pathway is the abstraction of the proton from the α-carbon to generate the quinonoid intermediate. The general base tha ...
... aspartate/oxaloacete. When aspartate binds to the active site of the enzyme the α-amino group displaces Lys-268 to form the external aldimine. The next step in the enzyme catalyzed pathway is the abstraction of the proton from the α-carbon to generate the quinonoid intermediate. The general base tha ...
a-Aminoadipate aminotransferase from an extremely
... was therefore termed lysN. LysN recognizes not only 2-oxoadipate, an intermediate of lysine biosynthesis, but also 2-oxoisocaproate, 2-oxoisovalerate and 2-oxo-3-methylvalerate, intermediates of leucine, valine and isoleucine biosyntheses, respectively, along with oxaloacetate, a compound in the TCA ...
... was therefore termed lysN. LysN recognizes not only 2-oxoadipate, an intermediate of lysine biosynthesis, but also 2-oxoisocaproate, 2-oxoisovalerate and 2-oxo-3-methylvalerate, intermediates of leucine, valine and isoleucine biosyntheses, respectively, along with oxaloacetate, a compound in the TCA ...
DNA and RNA Chapter 12 - Nampa School District
... If the diameter of the DNA (2 nanometers) was as wide as a fishing line (0.5 millimeters) it might stretch as far as 21.2 km (or 13.6 miles) in length which would all have to be packed into a nucleus, the equivalent size of 25 cm in diameter. That is some packaging! ...
... If the diameter of the DNA (2 nanometers) was as wide as a fishing line (0.5 millimeters) it might stretch as far as 21.2 km (or 13.6 miles) in length which would all have to be packed into a nucleus, the equivalent size of 25 cm in diameter. That is some packaging! ...
Lab 8 - Electrophoresis
... amino acids, such as phenylalanine and leucine, show limited solubility in water. Thus, these hydrophobic residues in a protein tend to cluster on the inside of the protein in order to avoid contact with the aqueous environment. Hydrophilic amino acids such as glutamic acid and lysine are readily so ...
... amino acids, such as phenylalanine and leucine, show limited solubility in water. Thus, these hydrophobic residues in a protein tend to cluster on the inside of the protein in order to avoid contact with the aqueous environment. Hydrophilic amino acids such as glutamic acid and lysine are readily so ...
Catalysis - University of California, Davis
... Proteins with a net charge generally tend to repel each other and allow their charged groups to interact with water. Proteins are least soluble at their pI, and proteinaceous ...
... Proteins with a net charge generally tend to repel each other and allow their charged groups to interact with water. Proteins are least soluble at their pI, and proteinaceous ...
Chapter 5 - Fernando Haro
... Protein is in your skin, hair, nails, muscles, etc Made of amino acids – amino acids contain nitrogen, which is necessary for life Particularly rich in animal foods – meats, poultry, eggs, etc ...
... Protein is in your skin, hair, nails, muscles, etc Made of amino acids – amino acids contain nitrogen, which is necessary for life Particularly rich in animal foods – meats, poultry, eggs, etc ...
1 - TechnionMed
... 15) In mitochondria, tricarboxylic acid cycle reactions generally proceed more: (1) slowly as the ADP concentration rises. (2) rapidly as the ADP concentration rises. (3) rapidly as the NADH concentration rises. (4) slowly as the NADH concentration rises. (5) slowly as the oxaloacetate concentration ...
... 15) In mitochondria, tricarboxylic acid cycle reactions generally proceed more: (1) slowly as the ADP concentration rises. (2) rapidly as the ADP concentration rises. (3) rapidly as the NADH concentration rises. (4) slowly as the NADH concentration rises. (5) slowly as the oxaloacetate concentration ...
(you should!). What exactly is the role of DNA and h
... So, the sequence of bases in DNA codes for the sequence of amino acids of a protein. But, there's a problem. In order to produce a protein you need ribosomes. Ribosomes catalyse the reactions of protein synthesis and if you can remember back to the first topic you'll know that ribosomes are found in ...
... So, the sequence of bases in DNA codes for the sequence of amino acids of a protein. But, there's a problem. In order to produce a protein you need ribosomes. Ribosomes catalyse the reactions of protein synthesis and if you can remember back to the first topic you'll know that ribosomes are found in ...
Document
... Some enzymes are initially produced in an inactive form - zymogen. A portion of the protein chain must be removed to make it active - proteolytic cleavage. This is irreversible. ...
... Some enzymes are initially produced in an inactive form - zymogen. A portion of the protein chain must be removed to make it active - proteolytic cleavage. This is irreversible. ...
ChemistryofLifeOLDve..
... Organic molecules are any molecules that contain atoms from three elements: carbon, hydrogen, and oxygen. For example, glucose is organic, since its molecular formula is C6H12O6 Carbon dioxide (CO2) is inorganic since it does not contain hydrogen. Covalent bonds link carbon atoms together in long ch ...
... Organic molecules are any molecules that contain atoms from three elements: carbon, hydrogen, and oxygen. For example, glucose is organic, since its molecular formula is C6H12O6 Carbon dioxide (CO2) is inorganic since it does not contain hydrogen. Covalent bonds link carbon atoms together in long ch ...
RNA Metabolism Summary Slides as Questions
... like the 5', and the carboxyl terminus is like the 3' end. Later, different things will be added to these ends. 3. Bacteria has __________ RNA polymerase. How many do eukaryotes have? Which are they? One RNA Pol for bacteria; three for eukaryotes. These are I, II, and III. More info below. 4. Where ...
... like the 5', and the carboxyl terminus is like the 3' end. Later, different things will be added to these ends. 3. Bacteria has __________ RNA polymerase. How many do eukaryotes have? Which are they? One RNA Pol for bacteria; three for eukaryotes. These are I, II, and III. More info below. 4. Where ...
Q1. (a) An enzyme catalyses only one reaction. Explain why
... A drug company produced a new type of insulin. Scientists from the company carried out a trial in which they gave this new type of insulin to rats. They reported that the results of this trial on rats were positive. A newspaper stated that diabetics would benefit from this new drug. Suggest two reas ...
... A drug company produced a new type of insulin. Scientists from the company carried out a trial in which they gave this new type of insulin to rats. They reported that the results of this trial on rats were positive. A newspaper stated that diabetics would benefit from this new drug. Suggest two reas ...
ChemistryofLife
... Organic molecules are any molecules that contain atoms from three elements: carbon, hydrogen, and oxygen. For example, glucose is organic, since its molecular formula is C6H12O6 Carbon dioxide (CO2) is inorganic since it does not contain hydrogen. Covalent bonds link carbon atoms together in long ch ...
... Organic molecules are any molecules that contain atoms from three elements: carbon, hydrogen, and oxygen. For example, glucose is organic, since its molecular formula is C6H12O6 Carbon dioxide (CO2) is inorganic since it does not contain hydrogen. Covalent bonds link carbon atoms together in long ch ...
Biochemistry 3020 1. The consumption of
... at C-2 is unsaturated. C-3 of glycerol is joined to an alcohol-containing head group through a phosphodiester linkage, which is negatively charged at neutral pH. ...
... at C-2 is unsaturated. C-3 of glycerol is joined to an alcohol-containing head group through a phosphodiester linkage, which is negatively charged at neutral pH. ...
citric acid cycle
... The urea cycle and the reactions that feed amino group into it. Note that the enzymes catalyzing these reactions are distributed between the mitochondrial matrix and the cytosol. One amino group enters the urea cycle from carbamoyl phosphate (step 1), formed in the matrix; the other (entering at s ...
... The urea cycle and the reactions that feed amino group into it. Note that the enzymes catalyzing these reactions are distributed between the mitochondrial matrix and the cytosol. One amino group enters the urea cycle from carbamoyl phosphate (step 1), formed in the matrix; the other (entering at s ...
Structure of Proteins
... Nonsense – these substitutions change the codon from an amino acid to a stop codon. The shortened protein is generally non-functional or its function is affected. Splice-site – these substitutions affect the boundaries between exons and introns (splice sites). A mutation here can prevent splicing at ...
... Nonsense – these substitutions change the codon from an amino acid to a stop codon. The shortened protein is generally non-functional or its function is affected. Splice-site – these substitutions affect the boundaries between exons and introns (splice sites). A mutation here can prevent splicing at ...
HH-Unit-1-PPQs - Dalkeith High School
... 16. If a DNA molecule contains 8000 nucleotides of which 20% are adenine, then the number of guanine nucleotides present is A. 1600 B. 2000 C. 2400 D. 3200. 17. During DNA replication, new nucleotides are added to the DNA strand at the A. 3’ phosphate end B. 3’ deoxyribose end C. 5’ phosphate end D ...
... 16. If a DNA molecule contains 8000 nucleotides of which 20% are adenine, then the number of guanine nucleotides present is A. 1600 B. 2000 C. 2400 D. 3200. 17. During DNA replication, new nucleotides are added to the DNA strand at the A. 3’ phosphate end B. 3’ deoxyribose end C. 5’ phosphate end D ...
Biosynthesis
Biosynthesis (also called biogenesis or anabolism) is a multi-step, enzyme-catalyzed process where substrates are converted into more complex products in living organisms. In biosynthesis, simple compounds are modified, converted into other compounds, or joined together to form macromolecules. This process often consists of metabolic pathways. Some of these biosynthetic pathways are located within a single cellular organelle, while others involve enzymes that are located within multiple cellular organelles. Examples of these biosynthetic pathways include the production of lipid membrane components and nucleotides.The prerequisite elements for biosynthesis include: precursor compounds, chemical energy (e.g. ATP), and catalytic enzymes which may require coenzymes (e.g.NADH, NADPH). These elements create monomers, the building blocks for macromolecules. Some important biological macromolecules include: proteins, which are composed of amino acid monomers joined via peptide bonds, and DNA molecules, which are composed of nucleotides joined via phosphodiester bonds.