How many amide bonds are in vasopressin?

[Perkins]

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On TBR CBT 4, there was a biochemistry problem in which it drew the structure of vasopressin and asked how many amid bonds one sees.

I counted 11 amide bonds, but the solutions say there are only ten? In the image attached I marked all the amide bonds I counted, and also copy pasted the solutions.

http://commons.wikimedia.org/wiki/File:Vasopressin_structure.png

 

[FutureMD23]

I cannot see the image you attached, but in the wikipedia link I am only counting 10. I can't see yours though, so I guess I'm not much help...

 

[FutureMD23]

Just kidding...I see 11 also...April fools

 

[apex954]

I counted 11 too, most likely a mistake on BR part...or if they meant only the amide bonds among the aa, which will then amount to a total of 9. Vasopressin contains 9 amino acids linked together, which means there r 8 amide bonds in the molecule plus the amide bond between NH3 and glycine's COOH group, making the total bond 9. But then Asparagine n glutamine each contain an amide bond in its structure making the overall count as 11

 

[lolarogers]

I can see there are 11 bonds.