Protein x

[Ally1788]

You are given a solution of protein "x". Protein x consists of 240 amino acid residues. 38% are valine, 24% are alanine, 20% are glycine, and 18% are isoleucine.
What is the molecular wieght of protein x?
whats the best way to solve this??

[canalon]

Calculate the number of each AA, and multiply by their molecular weight. Hard, I think I sparained a neurone here…

[victor]

I think I’ll call it hard if the question is asking you to sequence that x protein….:wink:

[baikuza]

hei, just sum all the MR of those amino acids…
… after you know the MR each of the amino acid and….
hmm…
you know the answer, do not you??
🙄 🙄 🙄

[zami’87.]

quote Ally1788:

You are given a solution of protein “x”. Protein x consists of 240 amino acid residues. 38% are valine, 24% are alanine, 20% are glycine, and 18% are isoleucine.
What is the molecular wieght of protein x?
whats the best way to solve this??

U need Mr for each amino acid…eg. 240 is 100% and Mr(val) is 38% then u find amount of val….same for others ..after all that u make a sum but keep on mind that u must subtract water molecules that are lost in making polypeptide chain

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