Amino Acids

Question 1

Non Polar Aliphatic

Answer 1

Gly, Ala, Val, Leu, Met, Ile

Question 2

Aromatics

Answer 2

Tyr, Trp, Phe

Question 3

Polar and Uncharged

Answer 3

Thr, Ser, Cys, Pro, Asn, Gln

Question 4

Polar and Positively Charged

Answer 4

His, Lys, Arg

Question 5

Polar and Negatively Charged

Answer 5

Asp, Glu

Question 6

Special ones

Answer 6

Cys forms disulfide linkages
Pro is sometimes non-polar andvchanges between cis and trans
His can be protonated or unprotonated
Ser, Thr can be O linked glycosylated
Asp can be N linked glycosylated
Ser, Thr, Tyr can be phosphorylated
Gly, Pro flexible in bond angles and helix breaker
Alan ad Leu are strong helix formers
Pro and Gly are common in beta turns
Lys is ubiquitinated and modified on histone tails

Question 7

Essential AA

Answer 7

Arg, His, Ile, Leu, Lys, Met, Phe, Thr, Trp, Val