Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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Question
Chapter 7, Problem 3P
Interpretation Introduction
Interpretation:
The total amount of iron that is present in the hemoglobin of a
Concept introduction:
Proteins are the
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Some terms will not be used.
The prosthetic group of hemoglobin and myoglobin is
The organic ring component of heme is
Under normal conditions, the central atom of heme is
In
the central iron atom is displaced 0.4 Å out of the plane of the porphyrin ring system.
The central atom has
bonds:
to nitrogen atoms in the porphyrin, one to a
residue, and one to oxygen.
Answer Bank
Fe3+
three
heme
serine
deoxyhemoglobin
four
Fe2+
oxyhemoglobin
рoгphyrin
histidine
six
cysteine
Bohr for me, not for thee. Does myoglobin exhibit a Bohr effect? Why or why not?
You happen to pass a bar. Distracted by your entrance into the bar, one of the humans inadvertently drank a beverage containing 80 ml methanol. Unfortunately, no medical personnel are on the station, and you do not have access to sickbay. Assume that methanol and ethanol have densities of 0.79 g/ml, and that the alcohols distribute themselves rapidly over the total volume of 73 liters of body fluids of your host. A quick check of the biochemistry textbook that you always carry with you when traversing the promenade reveals that the Km of alcohol dehydrogenase for ethanol is 1 mM and for methanol the Km is 10 mM, and reminds you that alcohol dehydrogenase converts ethanol into acetaldehyde (which can then be converted to acetyl-CoA). Alcohol dehydrogenase also converts methanol into formaldehyde, which is quite toxic to humans. Ingesting 80 ml of methanol will permanently harm the human unless you intervene.b. Someone has a single 600 ml bottle of Romulan ale (52% ethanol), which he is…
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