Ovalbumin is the predominant protein in egg whites, and shown below is its amino acid sequence. Highlight the amino acids that would give the positive result to the following tests... Ovalbumin is the predominant protein in egg whites, and shown below is its amino acid sequence. Highlight the amino acids that would give the positive result to the following tests; Fohl's-yellow, millon's-blue, and hopkin's cole-cyan. Will the ovalbumin give a positive result also to xanthoproteic test? Casein is the predominant protein in milk, and shown below is its amino acid sequence. Highlight the amino acids that would give the positive result to the following tests; Fohl's-yellow, millon's-blue, and hopkin's cole-cyan. Will the ovalbumin give a positive result also to xanthoproteic test?
Understand the Problem
The question requires us to identify and highlight specific amino acids in the provided sequences of ovalbumin and casein that would give positive results for various biochemical tests. It is also asking whether ovalbumin would yield a positive result for the xanthoproteic test.
Answer
Yes, ovalbumin gives a positive result to the Xanthoproteic test.
Ovalbumin would give a positive result for the Xanthoproteic test because it contains aromatic amino acids such as Tyrosine and Tryptophan.
Answer for screen readers
Ovalbumin would give a positive result for the Xanthoproteic test because it contains aromatic amino acids such as Tyrosine and Tryptophan.
More Information
Tyrosine and Tryptophan, being aromatic amino acids, are key markers for the Xanthoproteic test, which detects the presence of aromatic rings through nitration reactions that produce a colored complex.
Tips
Common mistakes include not recognizing all aromatic amino acids or confusing functional groups that participate in different tests.
Sources
- Solved Can someone answer the Hopkins-Cole Test part of this - chegg.com
- Experiment 729 Qualitative Testing of Amino Acids and Proteins - chem.libretexts.org
- Single-Step Purification of Ovalbumin from Egg White Using ... - ncbi.nlm.nih.gov
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