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The X-ray Crystal Structures of Human
The X-ray Crystal Structures of Human

... the pET-28b(⫹)-pmm1 plasmid. Transformed cells (4L) were grown at 37 °C in Luria broth (or minimal medium containing selenomethionine) containing 50 ␮g/ml ampicillin and induced for 4 h with 0.4 mM isopropyl ␤-D-thiogalactopyranoside. Cells were harvested by centrifugation and the pellet (11 g) was ...
video slide - Point Pleasant Beach School District
video slide - Point Pleasant Beach School District

... Steroids • Lanolin- Commercially refined from sheep's wool. Humans have a small amount of lanolin in the hair and skin; lanolin helps give these structures flexibility. ...
PCNA Protein Expression during Spermatogenesis of the
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... mRNA was responsible for the production of the two PCNA proteins. To further characterize these two PCNA proteins, we used antibodies that recognized different epitopes of eel PCNA (amino acids 100-120, 180-197, and 242-260) and rat recombinant PCNA (amino acids 112-121 and 181-195). All of the anti ...
Vesicle-mediated Protein Transport: Regulatory
Vesicle-mediated Protein Transport: Regulatory

... transformants were screened for mutants that exhibited wildtype vacuolar protein sorting at 26°C but missorted vacuolar proteins at 37°C. Analysis of 50,000 yeast transformants yielded 15 candidate vps34~:(tsf = temperature for function; for an example, see Herman et al., 1991b) alleles. The plasmid ...
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... In this lab, unknowns will be provided that are either have a complete set of functional arginine biosynthetic enzymes (wild type) or are defective in one of these enzymes. The goal in the project is to identify these unknowns as being either wild type of one of the arg mutants which include arg1, a ...
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c Syun-Ru Yeh‡ and Denis L. Rousseau
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SUPPLEMENTARY MATERIAL Title: Luteolin attenuate the D
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... Japan). All other reagents used in the experiments were of analytical grade and purity. 1.2 Animal and tissue preparation Adult male Kunming mice (6 weeks old, weighing 18-23g) were randomized into 4 groups (n = 12 each): Group 1 (control group): mice received daily intraperitoneally injected of sal ...
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SQA Higher Biology Unit 1 Cell Biology

... ¯ Some organisms are unicellular. ¯ Unicellular organisms can be either plant or animal cells. ¯ Some organisms are multicellular. ¯ Multicellular organisms can be either plants or animals. ¯ Multicellular organisms are organised into tissues, organs and systems, to function more effectively. ...
Chapter 6. Metabolism & Enzymes
Chapter 6. Metabolism & Enzymes

... active site binds substrate & puts stress on bonds that must be broken, making it easier to separate molecules ...
Gene Section CDK4 (cyclin-dependent kinase 4) Atlas of Genetics and Cytogenetics
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... Local order: Telomeric to the OS9 (amplified in osteosarcoma 9), CENTG1 (centaurin, gamma 1) and TSPAN31 (tetraspanin 31, SAS) genes. Centromeric to the MARCH9 (membrane-associated ring finger (C3HC4) 9), CYP27B1 (cytochrome P450, family 27, subfamily B, polypeptide 1) and METTL1 (methyltransferase ...
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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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