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The enzyme Bromelin is a cysteine protease from pineapple that utilizes a similar mechanism to serine proteases except the serine is replaced by a cysteine. Draw the mechanism of peptide hydrolysis by Bromelin. Start with the residues involved in catalysis and the substrate, and draw and label the structures for each of the following: 1) Michaelis complex 2) First tetrahedral transition state 3) acyl-enzyme intermediate (and first leaving group) 4) acyl-enzyme complex with attacking water molecule 5) second tetrahedral transition state 6) enzyme product complex.
During replication of viral DNA of members of the Polyomaviridae, a pair of T antigen hexamers forms a preinitiation complex at the origin for viral DNA replication.
Determine what kind of receptores are norepinephrine, epinephrine and phenylephrine? Are they slective or non-selective, alpha 1 or 2, beta 1 or 2.
The value of neutrons and protons a molecule have determine a molecules "Molecular Weight". An important part of working a laboratory involves making molar solutions.
define in your own words how Christian Anfinsen's ribonuclease renaturation experiments showed that amino acid sequence determines tertiary structure.
Identify two materials (biomaterials) used in the development of bioengineered products (for example, polycaprolactone, collagen).
What is the difference between stimulation of the right vagus versus the left vagus? How are they connected to the heart? What would you expect to see upon left vagus stimulation?
One homozygous strain of silkworm lays white eggs, and another lays black eggs. The F1 offspring of a cross of white and black egg laying silkworms are all found to lay white eggs. Among the F2 progeny, 50 silkworms were found to lay white eggs, 1..
In a particular squash plant, white fruit is dominant to yellow fruit.A white fruited plant is crossed to a yellow fruited plant.Whe the seeds from this cross are planted.
Compute the surface-area-to-volume ratio of a cube whose sides are 100 um in length to estimated the surface-area-to-volume ratio of the fern spore cell.
Why is the gene coding for ribosomal RNA (rRNA) used for establish phylogenetic relationships and how does this compare to previous methods for placing organisms in appropriate taxa.
The both endocrine and the nerve system are major regulating system of the body; however, the nervous system has been compared to an airmail system and the endoncrine system to the pony express. What is the resemblance.
Red-green color blindness is a sex-linked trait. If a husband and wife (whose father was color blind) both have normal color vision, what proportion of their daughters would be expected to have red-green color blindness? Explain your answer.
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