Table 1. Description of the Node and Edge Attributes That Make up an ErG.

node attributes
attribute	description
[0]	hydrogen-bond donor
[1]	hydrogen-bond acceptor
[2]	positive charge
[3]	negative charge
[4]	hydrophobic group
[5]	aromatic ring system
[6]	carbon link node
[7]	noncarbon link node
[0, 1]	hydrogen-bond donor + hydrogen-bond acceptor
[0, 2]	hydrogen-bond donor + positive charge
[0, 3]	hydrogen-bond donor + negative charge
[1, 2]	hydrogen-bond acceptor + positive charge
[1, 3]	hydrogen-bond acceptor + negative charge
[2, 3]	positive charge + negative charge
[0, 1, 2]	hydrogen-bond donor + hydrogen-bond acceptor + positive charge
edge attributes
attribute	description
-	single bond
=	double bond
≡	triple bond