From the graph provided, it can be observed Serine is present in highest number of proteins before the labile Asn. Threonine is the second most numorously occuring amino acid. Serine and Threonine are polar uncharged amino acids which are occuring before Asn. Also, Lysine (polar, positively charged amino acid) is present in almost equal number of casese as Threonine. In some cases, Leucine and Valine are occuring (both are non-polar). As far as the amino acid occuring after the labile Asn is concerned, in maximum cases Glycine (non-polar amino acid) is there. Serine and Threonine rank second and third based on the number of proteins in which they are present after the labile Asn. Solution From the graph provided, it can be observed Serine is present in highest number of proteins before the labile Asn. Threonine is the second most numorously occuring amino acid. Serine and Threonine are polar uncharged amino acids which are occuring before Asn. Also, Lysine (polar, positively charged amino acid) is present in almost equal number of casese as Threonine. In some cases, Leucine and Valine are occuring (both are non-polar). As far as the amino acid occuring after the labile Asn is concerned, in maximum cases Glycine (non-polar amino acid) is there. Serine and Threonine rank second and third based on the number of proteins in which they are present after the labile Asn..