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Intro-Cell-Physiology
Intro-Cell-Physiology

... When things go right: a balance of interactive and varied functions at all levels of organization • The body is considered from the perspective of the interactions of different organ systems • Organs are considered from the vantage of the interactions of different cell types. • Cells are viewed from ...
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... • Polysaccharides • Three or more monosaccharide's join to form large macromolecules such as starches, cellulose, chitin & glycogen. These are complex carbohydrates ...
TutorialProteomics by Dai
TutorialProteomics by Dai

... arginine (required for the young, but not for adults), histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine. These amino acids are required in the diet. Plants, of course, must be able to make all the amino acids. ...
Document
Document

... DNA Polymerase – a protein complex that copies DNA to DNA RNA Polymerase – a protein complex that copies DNA to RNA Spliceosome – a protein/RNA complex that removes introns from pre-mRNA Ribosome – a protein/RNA complex that translates mRNA codons to amino acids, making proteins Intron – a non-codin ...
General Nutrient Requirements
General Nutrient Requirements

... – Calories = energy to raise 1 g water from 14.5 15.5 C – Joules = energy to lift 102 g 1 m in earth’s gravity ...
Pre-lab 8: Peptides and Proteins
Pre-lab 8: Peptides and Proteins

... 4. Collect the solid protein using a funnel and filter paper. Wash the protein with two 10 mL portions of water. Weigh a watch glass. Transfer the protein to the watch glass and let the protein dry. Weigh. Calculate the mass of the milk protein. Save for part E. 5. Calculate the percentage of casein ...
Quaternary structures
Quaternary structures

... Changes in shape are an important part of protein function and control. For example: a change in shape allows DNA methyltransferase to choose hemi-methylated meCG/GC for bimethylation to meCG/GmeC ...
Revised Chapter 4 and 5
Revised Chapter 4 and 5

... • Polypeptides (dehydration reaction): peptide bonds~ covalent bond; carboxyl group to amino group (polar) ...
Full size lecture slides (PDF file, 660 kB)
Full size lecture slides (PDF file, 660 kB)

Do patients with advanced cancer have any potential for protein
Do patients with advanced cancer have any potential for protein

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Mutations Powerpoint

... The cell cycle is regulated by proteins. If these proteins are defective, cells divide prolifically. ...
Intro Cell Physiolog..
Intro Cell Physiolog..

... When things go right: a balance of interactive and varied functions at all levels of organization • The body is considered from the perspective of the interactions of different organ systems • Organs are considered from the vantage of the interactions of different cell types. • Cells are viewed from ...
Enzyme Worksheet
Enzyme Worksheet

... Most common elements in living things are carbon, hydrogen, nitrogen, and oxygen. These four elements constitute about 95% of your body weight. All compounds can be classified in two broad categories --- organic and inorganic compounds. Organic compounds are made primarily of carbon. Each small orga ...
Download PDF
Download PDF

... Biochemistry is the study of the variety of chemical structures and chemical reactions that occur in living organisms. In order to truly understand the detailed mechanisms of these diverse reactions, one must assimilate aspects of organic chemistry, inorganic chemistry, and physical chemistry and ap ...
Structure and Function of Macromolecules
Structure and Function of Macromolecules

... • Primary: refers to the unique sequence of amino acids in the protein. All proteins have a special sequence of amino acids, this sequence is derived from the cell's DNA. • Secondary : the coiling or bending of the polypeptide into sheets is referred to the proteins secondary structure. alpha helix ...
Structure and Function of Macromolecules What is a Macromolecule?
Structure and Function of Macromolecules What is a Macromolecule?

... • Primary: refers to the unique sequence of amino acids in the protein. All proteins have a special sequence of amino acids, this sequence is derived from the cell's DNA. • Secondary : the coiling or bending of the polypeptide into sheets is referred to the proteins secondary structure. alpha helix ...
Examensarbete Activity of carbonic anhydrase II in presence of
Examensarbete Activity of carbonic anhydrase II in presence of

... systems requires a thoughtful approximation to the possible consequences. Even though those aggregates have a specific function, drug delivery, biocatalysis, etc.; unexpected effects can rise from the exposure of those systems to living organism and in particular to the performance of highly functio ...
Chapter 3 Review Questions
Chapter 3 Review Questions

... 20. Proteins will not function properly if they have the wrong __shape__________. 21. An ___enzyme__________ is made of proteins and catalyzes reactions 22. Monomers are linked together by the process of _____polymerization__________. 23. Polymers are broken apart by the process of ___hydrolysis___ ...
Chapter 3: The Chemical Building Blocks of Life
Chapter 3: The Chemical Building Blocks of Life

... 1. biological molecules consist primarily of carbon molecules bonded to 2. hydrocarbons consist of and store B. Other Molecules Are Very Large, called C. Four general types II. The Building Blocks of Organisms A. The Chemistry of Carbon 1. Organic molecules contain ...
Protein structure
Protein structure

... • Secondary structure results from – folding of polypeptides into hydrogen-bonded motifs such as the α helix, the β-pleated sheet, β bends, and loops. ...
Organic Compounds Powerpoint
Organic Compounds Powerpoint

... • Organic Chemistry – the study of all compounds that contain bonds between carbon atoms. • Carbon has 4 electron in is outside orbital – each can form a strong covalent bond – bonds with many elements including other carbon atoms ...
Molecular Biology of the Cell
Molecular Biology of the Cell

... • Rate of import > rate of export then the protein is mostly located in the nucleus. • Remember these localization signals control the flow of the protein, in and out of the nucleus. These signals are turned on and off by phosphorylation and amino acids close to the signal sequences. ...
Amino Acids and Proteins
Amino Acids and Proteins

... Peptide bonds ma be cleaved to break the chain into smaller molecules The proteins usually have some “signal peptide”, or “leader sequence”, which directs them to the organelle where they function; its usually a 30-amino-acid chain with hydrophobic residues ...
What proteins an organism needs to produce and in what quantity
What proteins an organism needs to produce and in what quantity

... Proteins are commonly described as either being fibrous or globular in nature. Fibrous proteins have structural roles whereas globular proteins are functional (active in a cell’s ...
Chapter Summary - OHS General Biology
Chapter Summary - OHS General Biology

... groups (SH) of two cysteine monomers act to rivet parts of the protein together. Quaternary structure results from the aggregation of two or more polypeptide subunits. Protein structure also depends on the physical and chemical conditions of the protein’s environment. ○ Alterations in pH, salt conce ...
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Proteolysis



Proteolysis is the breakdown of proteins into smaller polypeptides or amino acids. Uncatalysed, the hydrolysis of peptide bonds is extremely slow, taking hundreds of years. Proteolysis is typically catalysed by cellular enzymes called proteases, but may also occur by intra-molecular digestion. Low pH or high temperatures can also cause proteolysis non-enzymatically.Proteolysis in organisms serves many purposes; for example, digestive enzymes break down proteins in food to provide amino acids for the organism, while proteolytic processing of a polypeptide chain after its synthesis may be necessary for the production of an active protein. It is also important in the regulation of some physiological and cellular processes, as well as preventing the accumulation of unwanted or abnormal proteins in cells. Consequently, dis-regulation of proteolysis can cause diseases, and is used in some venoms to damage their prey.Proteolysis is important as an analytical tool for studying proteins in the laboratory, as well as industrially, for example in food processing and stain removal.
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