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Chemical structure of oxytocin doesn't make sense?

Look at the Glycine at the beginning, why is the CO connected to an NH2 when it's supposed to be a carboxylic acid? Makes no sense. The structure of glycine is NH2-CH2-COOH not NH2-CO-CH2-NH2
Reply 1
Avatar for alow
alow
19
What do you mean it's "supposed" to be a carboxylic acid?

It's just another amide bond.
Reply 2
Avatar for Allergy
Allergy
OP
Original post by alow
What do you mean it's "supposed" to be a carboxylic acid?

It's just another amide bond.


Shouldn't it terminate with a COOH at the end?

The amide bond between Gly and Leu is formed by the NH2 of Gly and the COOH to become NH-CO, so the other end of Gly should terminate with COOH?

The structure of Glycine is NH2-CH2-COOH but the image suggests it's NH2-CO-CH2-NH2 unless there is some other etiquette for terminating a structure with a weird amide bond?
Reply 3
Avatar for alow
alow
19
Original post by Allergy
Shouldn't it terminate with a COOH at the end?

The amide bond between Gly and Leu is formed by the NH2 of Gly and the COOH to become NH-CO, so the other end of Gly should terminate with COOH?

The structure of Glycine is NH2-CH2-COOH but the image suggests it's NH2-CO-CH2-NH2 unless there is some other etiquette for terminating a structure with a weird amide bond?


The glycine has formed another amide bond.

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