amino acid classifications
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20 Terms
glutamic acid
acidic polar
arginine
basic polar
lysine
basic polar
glycine
nonpolar
smallest amino acid
R group: H
very flexible
often found where a protein needs flexibility
histidine
basic polar
its side chain pka is relatively close to physiological pH
very important in enzyme active sites
serine
neutral polar
glutamine
neutral polar
cystine
neutral polar
contains a thiol (sh)
can form a disulfide bond
important for protein structure
leucine
nonpolar
alanine
nonpolar
aspartic acid
acidic polar
valine
nonpolar
isoleucine
nonpolar
proline
nonpolar
R group connects back to amino group
very rigid
can introduce bends/kinks in protein structure
phenylalanine
nonpolar
asparagine
neutral polar
methionine
nonpolar
contains sulfur
often the first amino acid incorporated during translation
threonine
neutral polar
tyrosine
neutral polar
aromatic
has an OH group
tryptophan
nonpolar