In 3' and 5' what does the single quote mean?

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evointrigued
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In 3' and 5' what does the single quote mean?

Post by evointrigued » Wed Dec 05, 2007 1:14 am

If there is a 3' end of a DNA strand, what does the single quote mean?

Thanks.

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mith
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Post by mith » Wed Dec 05, 2007 1:32 am

prime, it's a designation like #3.
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Post by evointrigued » Wed Dec 05, 2007 2:19 am

Thanks. Is there a reason why it's denoted as a 3? Does "3 prime" mean 3 of something? Or is it merely a labeling system with no meaning behind it?

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Post by BioLad » Wed Dec 05, 2007 2:40 am

3' is the number 3 carbon and 5' is the number 5 carbon as you count on the deoxyribose.
Last edited by BioLad on Wed Dec 05, 2007 2:45 am, edited 1 time in total.

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Post by BioLad » Wed Dec 05, 2007 2:44 am

Hmm It won't let me submit a link until I have 5 posts. Here is post #4

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Post by BioLad » Wed Dec 05, 2007 2:45 am

And Number 5...then I will send a li nk with a pic of the numbering.

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Post by BioLad » Wed Dec 05, 2007 2:45 am

OK, If you look Here (http://homepages.ius.edu/GKIRCHNE/DNA.htm) about half way down the page is an image with the numbers on the deoxyribose showing how it works.

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Post by evointrigued » Wed Dec 05, 2007 3:14 am

Thanks. You both double-teamed to answer this perfectly.

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