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Old 09-02-2011
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Biochemistry Vitamin deficiency and bleeding gums and a biochemical process!

An 18-year-old male college student, who has strictly avoided eating vegetables and fruits for 2 years, develops heavy gingival bleeding. If these findings are due to a vitamin deficiency, which of the following processes is inhibited?
A. Proline hydroxylation
B. Synthesis of procollagen chains
C. Collagen N-terminus cleavage
D. Glycosylation of hydroxylysine
E. Clathrin coating of procollagen-laden vesicles
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Old 09-02-2011
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A. Proline hydroxylation
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Old 09-02-2011
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A. proline hydroxilation
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Old 09-02-2011
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AAAAAAAAAAAAAAA
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Old 09-02-2011
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A. Proline hydroxylation
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Old 09-02-2011
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A proline hydroxylation
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Old 09-03-2011
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A proline hydroxylation
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Old 09-03-2011
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agree with a
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Old 09-03-2011
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its definetely a
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Old 09-04-2011
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The correct answer is A.
This patient has scurvy, which is due to inadequate vitamin C intake over a long period of time. Hydroxylation of proline and lysine residues is key for collagen formation, but this process requires vitamin C as a cofactor.
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