Protein Structure Study Guide 1. Draw the structure of a peptide bond between two amino acids. Why is it said that the C-N bond has a partial double bond structure. Draw the resonance states of the double bond. Between each amino acid residue is a C=O and N-H bond. Due to the double bond that C=O has it is a good accepter for hydrogen bonding‚ while N-H is a good donor for hydrogen bonding. The C=O bonds and the N-H bonds both are used to stabilize the protein sequence. [pic] 2.
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In the poem “Dulce et Decorum Est” by Wilfred Owen‚ the author uses irony‚ onomatopoeia and the sense of taste to help portray the theme of the realities and horror of war and how it is glorified. Firstly‚ the author uses the literary device of irony in the title of the poem. By naming the poem after the quote “Dulce et Decorum Est Pro Patria Mori” which means “It is sweet and fitting to die for ones country” Owen contradicts the title of the poem with the theme of the poem. This portrays the theme
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is a mystery and how it connects to the world’s most dangerous game. Then he continues with “ The old charts call it ‘Ship-Trap Island‚’” Which expands the reader’s curiosity about what will happen to the people aboard this ship. Rainsford heard a gunshot in the distance during the middle of the night‚ after which he fell off the ship into the
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of the coactivator: Nuclear receptors contains one ligand dependent transcriptional activation domain AF-2. Upon the agonist binding‚ AF-2 take an active conformation that allow it to bind the coactivators. AF-2 consists of the hydrophobic residues of helices 3‚ 4‚ 5 and 12. So‚ when the agonist is binding‚ helix 12 would take a conformation that allow it to complete the hydrophobic surface of AF-2 allow binding to LXXLL motifs of the coactivator [3]. The nuclear receptors are different in
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observe carefully. If droplets of water appear on the test tube it may be a hydrate. Note the nature and color of the residue. 3. Let the tube cool‚ and try to dissolve the residue in a few cm3 of water‚ warming if necessary. A true hydrate will dissolve in water‚ producing a color similar to that of the original hydrate. A carbohydrate will give off water‚ but tends to char. The residue will also often be a caramel color. B. Reversibility 1. Gently heat a few crystals of about 0.3 grams
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By reading long walk to water by Linda Sue Park you would learn the life in Southern Sudan. The story takes place in Southern Sudan and it is based on a true story it’s about life in Sudan. So this informational text is about life in Sudan and how it affected people. The climate of Sudan is very different from the United States in sudan there is very little rain and in environment there was water but it was very far. If you want to if it’s true you have to read long walk to water and according to
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luggage‚ a brown Samsonite case‚ that had carried the bomb. Inside that Samsonite case was a Ghettoblaster cassette player‚ stuffed with Semtex. Scientists can piece this together because the pieces of wreckage closest to the blast have the most residue. This fact enabled them to trace the clothing from that suitcase to a shop in Malta where sales receipts started the trail that eventually led to Abdelbaset al-Megrahi and Lamin Khalifah Fhimah. Megrahi was found guilty and went to jail. A Scottish
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treatments are presented in table 4. The amount of herbicide recovered on 0th day (2 hrs after application) was ranged from 104 – 247 µg / kg in soil and 12.2 -13.1 µg / mL in field water at different doses of ready mix application. The pretilachlor residue concentration at different time intervals was influenced by the dose of application and increased with increase in dose of ready mix application. More than 50 % of the initial
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Abuse of Power In the story a long way gone‚ guns have been given power. The use of ammunition has stirred fear in the lives the individuals that are afflicted by them. The armed rebels have abused their power and instead of using guns for protection they use it to make people fearful of them‚ transform beautiful villages to derelict‚ abandoned land‚ and harass communities regardless of an individual’s age or gender. Though guns can be given to people and used as a respectful authority
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chromatography. Hexane was higher in the distillate stage. The first drop of condensation appeared at 79°C. The volume of the distillate was 0.88ml and 0.98ml for the residue volume. The initial mixture had a volume ratio of 48.7% for toluene and 51.3% for hexane. The ratio for volume was determined for the distillate and residue. The distillate percent volume ratio for hexane
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