CHM 365 Chapter 3

What are the 9 essential A.A?

L, I, V, K, M, F, T, W

What A.A are NP?

G, A, V, L, I, F, W, P, M

What A.A are Polar and Uncharged?

S, T, Y, N, Q, C

What A.A are negatively charged?

D and E

What A.A are Postively Charged?

K, R, H

What A.A are sulfur containing?

C and M

What A.A are aromatic?

F, Y, W, H

What A.A are aliphatic?

V, L, I

What A.A are hydroxyl containing?

S, T, Y

What is the smallest chiral A.A?

A

What is a peptide bond?

C bonded to N of other a.a residue

condensation reaction

usually trans but is cis for proline

What are the 3 main classes of hormones?

lipid derived (steroids)

amino acid derivatives

peptide derivatives

What A.A has R configuration?

Cysteine

What series are the A.A in?

All in L series except for glycine (no L/D configuration)

What A.A can form disulfide bonds?

cysteine- cystine