Amino acids: nonpolar vs polar, charged vs charged

gly or glycine polar or nonpolar?

nonpolar

alanine or ala polar or nonpolar?

nonpolar

valine or val polar or nonpolar

nonpolar

leucine or leu polar or nonpolar

nonpolar

isoleucine or IIe polar or nonpolar?

nonpolar

proline or pro polar or nonpolar

nonpolar

phenylalanine or Phe polar or nonpolar

nonpolar

tryptophan or trp polar or nonpolar

nonpolar

methionine or Met polar or nonpolar?

nonpolar

serine or ser polar or nonpolar

polar

threonine or Thr polar or nonpolar

polar

tyrosine or tyr polar or nonpolar

polar

asparagine or Asn polar or nonpolar

polar

glutamine or Gln polar or nonpolar

polar

lysine or lys polar or nonpolar

polar

arginine or Arg polar or nonpolar

polar

histidine or His polar or nonpolar

polar

aspartic acid or Asp polar or nonpolar

polar

glutamic acid or Glu polar or nonpolar

polar

serine or ser=polar charged or uncharged?

uncharged

threonine or Thr=polar charged or uncharged

uncharged

tyrosine or Tyr =polar charged or uncharged

uncharged

asparagine or Asn =polar charged or uncharged

uncharged

glutamine or Gln =polar charged or uncharged

uncharged

lysine or lys =polar charged or uncharged

charged

arginine or Arg =polar charged or uncharged

charged

histidine or his =polar charged or uncharged

charged

aspartic acid or Asp =polar charged or uncharged

charged

glutamic acid or Glu =polar charged or uncharged

charged

cysteine or cys polar or nonpolar

it is considered mostly nonpolar, but it is slightly soluble in water and very weakly polar

Why is cys or cysteine important?

because it is the amino acid that can engage in disulfide bonds