Can you have a 3' PHOSPHATE group?

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Does anyone have an example of a 3' phosphate group.

Usually it's 5' phosphate, 3' hydroxyl.

But, I guess it's possible to have a 3' phosphate? I'm confused, please help.
 
To my knowledge, no...If there was such thing, I don't think it would show up on the DAT, because no other exceptions are noted in my general bio textbook. Curious to see what others post, especially someone who has taken a Genetics course...
 
Sure, it's chemically possible, but you'll never find that configuration IRL because biological systems have developed to solely employ 5' phosphate bonding, just like the observation that L-sugars exist chemically, but not biologically.
 
I may be wrong but I believe NADPH has a 3' phosphate group. Theoretically, you can have a phosphate on any of the positions with a hydroxyl group.
 
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