Mapping a mutation in a gene product that contributes to Retinitis pigmentosa. - USMLE Forums
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Old 03-18-2012
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DNA Mapping a mutation in a gene product that contributes to Retinitis pigmentosa.

Retinitis pigmentosa (RP) is a genetically heterogenous disease characterized by progressive photoreceptor degeneration and ultimately blindness. Mutations in more than 20 different genes have been identified in affected patients. A new candidate gene has been mapped at 5q31. One might expect this gene to encode a polypeptide required for the activity of a(n):

A. receptor tyrosine kinase
B. cGMP phosphodiesterase
C. phospholipase C
D. adenyl cyclase
E. protein kinase C
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Old 03-18-2012
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I'm not sure but this can be a gene for rodopsin and cGMP PDE is the part of it's action in the dark situations.
I remmember it from KLN biochem in the Vitamin A.
wonder what's the right answer
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Old 03-19-2012
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Dr.Nick What is the answer?
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Old 03-19-2012
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Quote:
Originally Posted by beka-CTS View Post
I'm not sure but this can be a gene for rodopsin and cGMP PDE is the part of it's action in the dark situations.
I remmember it from KLN biochem in the Vitamin A.
wonder what's the right answer

Yes B is the right ans ......

good one beka CTS and Nice qs Dr Nick
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Old 03-20-2012
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Yep, answer is B.
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