뒤로Non-Ionizable Vs. Ionizable R-Groups definitions
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1/15뒤로Skip to main content뒤로Amino Acid
Building block of proteins, each with a unique R group that determines its chemical properties and behavior in biological systems. R Group
Side chain attached to the central carbon of an amino acid, responsible for its distinct chemical characteristics. Non-Ionizable R Group
Side chain that remains uncharged due to lack of acid-base reactions, resulting in only two pKa values for the amino acid. Ionizable R Group
Side chain capable of gaining or losing charge through acid-base reactions, contributing a third pKa value to the amino acid. pKa
Value indicating the pH at which a group can donate or accept a proton, crucial for understanding ionization states. Ionic Bond
Electrostatic interaction formed between charged groups, important for protein structure and function. Arginine
Amino acid with a positively charged ionizable R group at physiological pH, often involved in basic interactions. Histidine
Amino acid with an ionizable R group that can be positively charged at physiological pH, playing a role in enzyme activity. Lysine
Amino acid with a basic, positively charged ionizable R group at physiological pH, contributing to protein charge. Aspartate
Amino acid with a negatively charged ionizable R group at physiological pH, classified as acidic. Glutamate
Amino acid with a negatively charged ionizable R group at physiological pH, important for acidic interactions. Cysteine
Amino acid with a sulfhydryl-containing ionizable R group, uncharged at pH 7 but gains negative charge above pH 8.3. Tyrosine
Amino acid with a phenolic ionizable R group, uncharged at pH 7 but gains negative charge above pH 10.1. Physiological pH
Typical pH of biological systems, around 7, used as a reference for amino acid charge states. Acid-Base Reaction
Chemical process involving proton transfer, essential for ionization of certain amino acid side chains.
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