Rasmol image of porin complex

BIOLOGY 303

Structure and Function of Proteins

 

Amino Acid Flash Cards

1. Sidechain is positively charged at pH 7.5.

K, R, and sometimes H

2. Sidechain has a pK > 11.5.

R

3. Sidechain has a gamma-amide.

Q

4. Sidechain can form H-bonds to backbone.

N, T, S, D, Q, E, K, R, H, Y, in order of preference

5. Sidechain has an amino group.

K

6. Sidechain is beta-branched and hydroxylated.

T

7. Sidechain binds zinc.

C, H

8. Sidechain can be glycosylated.

N, T

9. Phi, Psi angles have the broadest range.

G

10. Sidechain has an imidazole.

H

11. Sidechain is recognized by SH2 domains.

Y (with phosphate)

12. Sidechain is often used for fluorescence measurements.

W

13. Sidechain is prone to oxidation.

C, M to a lesser extent

14. Rarest sidechain.

W

15. Sidechain has a near neutral pK.

H

16. Sidechain has greatest number of atoms.

W or R, depending on pH

17. Sidechain binds iron.

H

18. Sidechain has both nitrogen and oxygen.

N, Q

19. Sidechain has three nitrogens.

R

20. Sidechain has a chiral center.

I, T

21. Sidechain is nonaromatic and cyclic.

P

22. Sidechain has a thiol.

C

23. Sidechain has a beta-carboxylate.

D

24. Sidechain is negatively charged at pH 7.0.

E, D

25. Sidechain has a beta-amide.

N

26. Sidechain is gamma-dimethylated.

L

27. Sidechain has an unreactive sulfur.

M

28. Sidechain has a gamma-carboxylate.

E

29>. Sidechain has four unbranched carbons.

K

30. Sidechain is straight-chain and hydroxylated.

S

31. Sidechain has no beta-carbon.

G

32. Sidechain binds calcium.

N, Q, D, E

33. Sidechain is beta-branched and hydrophobic.

V, I

34. Sidechain forms interaction with phosphate backbone of DNA.

K, R, and sometimes H

35. Sidechain forms disulfide bonds.

C

36. Sidechain is beta-dimethylated.

V

37. Sidechain has a benzene ring.

F

38. Sidechain is the only straight-chain hydrophobic group.

M

39. Sidechain has an acidic group.

E, D

40. Sidechain is recognized by SH3 domains.

P

41. Sidechain has a beta-ethyl group.

I

42. Sidechain can be phosphorylated.

Y, T, (and sometimes S)

43. Most common sidechain.

A

44. Sidechain has a guanidino group.

R

45. Sidechain is cyclized to backbone.

P

46. Sidechain is bicyclic.

W

47. Sidechain has a hydroxylated ring.

Y