escherichia coli cells are shown to be attracted to the l-amino acids alanine , asparagine , aspartate , cysteine , glutamate , glycine , methionine , serine , and threonine , but not to arginine , cystine , glutamine , histidine , isoleucine , leucine , lysine , phenylalanine , tryptophan , tyrosine , or valine .
C0002520
amino acids
C0017797
glutamine