valine is an essential amino acid. chemical structural formula and model of molecule

acid amino aminoacid atom atomic atoms biochemistry biological biology biomolecule bond c5h11no2 carbon chemical chemistry compound education educational element essential flat formula hydrogen icon illustration isolated lupine medical metabolic model molecular molecule nitrogen organic oxygen peptide phe phenyl phenylalanin phenylalanine phenylketonuria protein proteinogenic science scientific skeletal structural structure val valine vector