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Table 1 The list of atom and bond types used in labeling interfacial graphs

From: FragVLib a free database mining software for generating "Fragment-based Virtual Library" using pocket similarity search of ligand-receptor complexes

Atom

Description

C.3

Carbon sp3

C.2

Carbon sp2

C.1

Carbon sp

C.ar

Carbon aromatic

C.cat

Carbocation

N.3

Nitrogen sp3

N.2

Nitrogen sp2

N.1

Nitrogen sp

N.ar

Nitrogen aromatic

N.am

Nitrogen amide

N.pl3

Nitrogen trigonal planar

N.4

Nitrogen sp3 positively charged

O.3

Oxygen sp3

O.2

Oxygen sp2

O.co2

Oxygen in carboxylates and phosphates

S.3

Sulfur sp3

S.2

Sulfur sp2

S.O

Sulfoxide Sulfur

S.O2

Sulfone Sulfur

P.3

Phosphorous sp3

F

Fluorine

Cl

Chlorine

Br

Bromine

I

Iodine

Li

Lithium

Na

Sodium

Mg

Magnesium

Al

Aluminum

Si

Silicon

K

Potassium

Ca

Calcium

Cr.th

Chromium (tetrahedral)

Cr.oh

Chromium (octahedral)

Mn

Manganese

Fe

Iron

Co.oh

Cobalt (octahedral)

Cu

Copper

Se

Selenium

Mo

Molybdenum

Sn

Tin

Zn

Zinc

Bond

Description

1

Single bond

2

Double bond

3

Triple bond

am

Amide

ar

Aromatic

nc

Not connected

  1. An option for labeling each atom type with the number of hydrogen atoms is available. This way, an sp3 Oxygen with one hydrogen atom is distinguished from an sp3 Oxygen with no hydrogen atoms; this is useful for hydrogen-bonding interactions.