Structural effects of LacI variants

 

TMD Change[1]

 

Variant

 

Assembly

Y282D Reversion[2]

Protein Stability

Chemical Modification

Solvent Exposure

Compared to WT

Monoclonal Exposure

UV Difference

Y7

 

W/Wless[3]

 

 

 

 

 

 

 

M42

 

I

 

X

 

 

 

 

 

L62

 

W/Wless[3]

 

 

 

 

 

 

 

I64

1

 

 

 

 

 

 

 

 

V66

1

 

 

 

 

 

 

 

 

L71

2

 

 

 

 

 

 

 

 

L73

3

 

 

 

 

 

 

 

 

H74

2

R
/Wless
[3]

 

X

 

 

 

 

 

S77

2

L[4]

 

 

 

 

ANS more apolar
KI: Less quenching/solvent exposure with IPTG change

 

Bigger >300 nm

Q78

1

 

 

 

 

 

 

 

 

V80

1

 

 

 

 

 

 

 

 

A81

 

V[5]

 

 

 

C107 IPTG sensitivity lost

 

 

Very small diff

I83

1

 

 

 

 

 

 

 

 

K84

1,2

E
R
A
L

 

  

 X[6]
X 

 

High[7]
Very high

 

 

WT6
WT
Decreased
Decreased

 

 All bigger[8] peaks

All bigger peaks

D88

1

 

 

 

 

 

 

 

 

L90

1

 

 

 

 

 

 

 

 

S93

1

 

 

 

 

 

 

 

 

V94

1

 

 

 

 

 

 

 

 

V95

 

 

 

 

 

 

 

 

 

V96

1

 

 

 

 

 

 

 

 

S97

1

 

 

 

 

 

 

 

 

M98

1

I

 

X

 

 

 

 

 

E100

1

W/Wless[3]

 

 

 

 

 

 

 

N113

1