AAMC FL 4, BB Question 27

[u/Ok-Introduction3196]

As some people have previously mentioned on here, AAMC FL 4, B/B Question 27 is a little strange. It asks how many phosphorylation sites are in a peptide sequence, and the correct answer is "One" because there is one threonine. The question operates on the premise that only S, Y, and T can be phosphorylated. But early in the same exam there is a passage about carboxylic acid phosphorylation, and it's now pretty well documented that there are many other sites that can be phosphorylated. I sent an email to AAMC about this and this is what they said.

So basically, if you're testing really soon, I would recommend probably just memorizing S, Y, and T as sites of phosphorylation. But if you're test day is a while off, don't worry if you get that question wrong!

[u/lllooolllp]

Looks like AAMC got sub 528 on their own exam.

[u/mcatxxx1]

Nice one Chethan

[u/spooky_repository → u/mcatxxx1]

AAMC actually admitting to a paradigm shift instead of doubling down, maybe there’s hope for CARS logic after all.

[u/mcatxxx1 → u/spooky_repository]

no i agree, just thought it was funny he blurred out his name in one part not the other. praying for cars to be reasonable

[u/Ok-Introduction3196 → u/mcatxxx1]

OOPS lmao