Thanoswashere
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If 625 amino acids are bonded into a protein how many water molecules are produced?
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Jpw1097
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(Original post by Thanoswashere)
If 625 amino acids are bonded into a protein how many water molecules are produced?
When two amino acids join together, they form a peptide bond which releases one molecule of H2O - it is a condensation reaction. One molecule of H2O is produced for every peptide bond formed. So 2 amino acids joining together will form 1 molecule of water, 3 amino acids will produce 2 and so on.

Therefore, if n amino acids are joined together, n-1 peptide bonds are formed, and n-1 water molecules are formed.
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Kallisto
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When amino acids got bonded to (poly-)peptides, it is a condensation reaction: the amino group reacts with the carboxyl group and one water molecule is produced.

Two bonded amino acids result in one H2O molecule, three amino acids in two H2O molecules, four in three, five in four... because there is always one linkage at the end of the (poly-)peptide chain that leads to the condensation reaction with the known functional groups again. That is to say there are always H2O molecules reduced by one according to the numbers of the amino acids. In your case you have 625 amino acids for the protein, this leads to 624 water molecules as water elimination.
Last edited by Kallisto; 3 months ago
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jaxjabsen
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(Original post by Thanoswashere)
If 625 amino acids are bonded into a protein how many water molecules are produced?
When an amino acid is bonded and a peptide bond is formed, one molecule of water is eliminated. So 625/2 = 312.5 water molecules would be formed. I think this is correct. Hope it helps!
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Thanoswashere
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(Original post by Jpw1097)
When two amino acids join together, they form a peptide bond which releases one molecule of H2O - it is a condensation reaction. One molecule of H2O is produced for every peptide bond formed. So 2 amino acids joining together will form 1 molecule of water, 3 amino acids will produce 2 and so on.

Therefore, if n amino acids are joined together, n-1 peptide bonds are formed, and n-1 water molecules are formed.
Ohhhhh ok that makes sense! Thank you for your help!!
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Kallisto
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(Original post by jaxjabsen)
When an amino acid is bonded and a peptide bond is formed, one molecule of water is eliminated. So 625/2 = 312.5 water molecules would be formed. I think this is correct. Hope it helps!
Nope. When the first two amino acids are bonded, it comes to one H2O molecule as elimination, but after that another new amino acid bond causes another new elimination. Thus H2O is always reduced by one for any numbers of amino acids.
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