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Table 1 Active site details of Ws SGTL1 and Ws SGTL4 proteins

From: Comparative interactions of withanolides and sterols with two members of sterol glycosyltransferases from Withania somnifera

Active site descriptors

Ws SGTL1

Ws SGTL4

Size and shape

  

Volume [Ã…3]

1481.16

2371.07

Surface [Ã…2]

1801.17

2989.3

Lipophilic surface [Ã…2]

1260.55

2211.65

Depth [Ã…]

22.86

39.6

Ellipsoid main axis ratio c/a

0.32

0.21

Ellipsoid main axis ratio b/a

0.7

0.26

Enclosure

0.05

0.07

Functional groups

  

Hydrogen bond donors

38

66

Hydrogen bond acceptors

100

159

Metals

0

0

Hydrophobic interactions

67

116

Hydrophobicity ratio

0.33

0.34

Elements

  

Pocket atoms

352

579

Carbon (C)

246

399

Nitrogen (N)

51

90

Oxygen

53

86

Sulphur (S)

2

4

Other elements

0

0

Amino acid composition

  

Apolar amino acid ratio

0.55

0.52

Polar amino acid ratio

0.31

0.32

Positive amino acid ratio

0.06

0.09

Negative amino acid ratio

0.08

0.08

Amino acids

  

ALA

10

14

ARG

1

5

ASN

4

6

ASP

2

6

CYS

2

2

GLN

2

4

GLU

4

3

GLY

7

13

HIS

3

4

ILE

1

10

LEU

9

8

LYS

1

2

MET

2

3

PHE

7

12

PRO

5

8

SER

3

4

THR

3

4

TRP

2

3

TYR

3

5

VAL

6

4

Special amino acids

0

0