Side chain polarity Reset Display the amide group as Ball & Stick. Some facts on L-glutamine. Abbreviation: Gln. One-letter code: Q, as in "Q-tamine". Molecular mass: 146 daltons. Side chain (or R-group) features: Structural formula: Formula: -(CH2)2-CONH2; Category: polar; neutral. pKa: none. Return to image of Gln.
Some facts on L-glutamine.