1
Q
Alanine 3 letter and 1 letter code
A
Ala
A
2
Q
Alanine structure
A
Ala
A
3
Q
Glycine 3 and 1
A
Gly
G
4
Q
Valine 3 and 1
A
Val
V
5
Q
Leucine 3 and 1
A
Leu
L
6
Q
Isoleucine 3 and 1
A
Ile
I
7
Q
Methionine 3 and 1
A
Met
M
8
Q
Proline 3 and 1
A
Pro
P
9
Q
Phenylalanine 3 and 1
A
Phe
F
10
Q
Tryptophan 3 and 1
A
Trp
W
11
Q
Serine 3 and 1
A
Ser
S
12
Q
Glycine st
A
Gly
13
Q
Valine st
A
Val
14
Q
Leucine st
A
Leu
15
Q
Isoleucine st
A
Ile
16
Q
Methionine st
A
Met
17
Q
Proline st
A
Pro
18
Q
Phenylalanine st
A
Phe
19
Q
Trp st
A
Trp
20
Q
Ser st
A
Ser
21
Q
Threonine 3 and 1
A
Thr
T
22
Q
Threonine structure
A
Thr
23
Q
Asparagine 3 and 1
A
Asn
N
24
Q
Asparagine structure
A
Asn
25
Glutamine 3 and 1
Gln
| Q
26
Glutamine sturcture
Gln
27
Tyrosine 3 and 1
Tyr
| Y
28
Tyrosine structure
Tyr
29
Cysteine 3 and 1
Cys
| C
30
Cysteine structure
Cys
31
Lysine 3 and 1
Lys
| K
32
Lysine structure
Lys
33
Arginine 3 and 1
Arg
| R
34
Arginine structure
Arg
35
Histidine 3 and 1
His
| H
36
Aspartic acid 3 and 1
Asp
| D
37
Aspartic acid structure
Asp
38
Glutamic acid 3 and 1
Glu
| E
39
Glutamic acid structure
Glu
40
Basic amino acids
Lys, Arg, HIs
41
Acidic aa
Asp Glu
42
How are acidic and basic aa classified?
Based on whether the neutral form is an acid or a base
43
1 Dal =
1/12 of mass of 12C
| therefore equals 1 g/mol
44
Determining L and D configuration
with H pointing towards you,
L form Co R N is in clockwise direction
D form is in counterclockwise direction
45
Henderson Hassel back
pH= pKa+ log ( base/ acid)
46
non polar aa
G, A , V, I < L , M, F, W, P
47
polar no charge aa
G, Y, S, T, N Q, C, H
48
cys can form disulphide bridges in
oxidative environments
| in reducing environments in the cytoplasm, the cys does not form disulpide bridges
49
pH less than pKa
remains in the protonated form
50
pH= pKa
half and half of protonated and deprotonated form
51
pH> pKa
mostly in deprotonated form
52
pI
pH at which the molecule is neutral
BIOCH320
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