Answer
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Step 1:: Identify the missing information for valine.
Valine is a common amino acid, and its three-letter abbreviation is "Val." To determine its class, let's recall the properties of amino acids. Amino acids are classified into four groups based on their side chains: nonpolar (hydrophobic), polar uncharged, polar charged positive, and polar charged negative. Valine is a nonpolar (hydrophobic) amino acid. So, the missing information for valine is: three-letter abbreviation: Val class: Nonpolar (hydrophobic)
Step 2:: Identify the missing information for Trp.
Trp is the abbreviation for tryptophan, an amino acid. Its class is polar charged positive because tryptophan has a positively charged side chain at physiological pH. So, the missing information for Trp is: name: Tryptophan class: Polar charged positive
Step 3:: Identify the missing information for glutamic acid.
Glutamic acid is an amino acid with the three-letter abbreviation "Glu." It belongs to the polar charged negative class since glutamic acid has a negatively charged side chain at physiological pH. So, the missing information for glutamic acid is: three-letter abbreviation: Glu class: Polar charged negative
Final Answer
1. Valine: three-letter abbreviation - Val, class - Nonpolar (hydrophobic) 2. Trp: name - Tryptophan, class - Polar charged positive 3. Glutamic acid: three-letter abbreviation - Glu, class - Polar charged negative 4. Arginine: three-letter abbreviation - Arg, class - Polar charged positive
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