MR_T

I know we have a few bio/chem people on here, hopefully somebody can help me out. I have an exam tomorrow, going over study guide questions and not sure about this one, my ochem is a little rusty and this place has been here for me over the years..

here is the question exactly as its written.

"Name the 3 major "R" groups of amino acids."

So if an amino acid has a generic structure of a central carbon with amino group, R group, and Hydrogen atom attached to it, Am I being asked what the most common(major) R groups are in the 20 common amino acids? or do the hydrogen, amino group and slide chain count as r groups since they are attached to a central carbon?

Also if the first guess was correct, what are the most common R groups in A.A's, Im studying the structures right now and I'm having a hard time finding a shared/common one

Thanks

EG-prince

mang, I took biochem about a year ago, and I definitely don't remember it will enough to begin to help you. I mean, I'd try, but my text book and notes are 1700 miles away from me right now too. Good luck mang

NIGn0g

I can tell you what I have in my french bio book but I don't know in english.

R = Chaine latérale

1st group: chaine latérale non polaire et hydrophobe (Non-polar lateral links and hydrophobic)
2nd group: chaine latérale polaire et hydrophile (Polar lateral links and hydrophilic)
3rd group: Acide aminés acides. Have a negative charge. ("acid" amino acids)

This come from the book Neil A. Campbell, but french translated...

Don't ask me more I don't know biology at all lol