Network Variation Maps

[ New network maps | Update history ]
KEGG NETWORK represents a renewed attempt by KEGG to capture knowledge of diseases and drugs in terms of perturbed molecular networks (see Background of KEGG DISEASE). It accumulates variations of molecular interaction/reaction networks in terms of network variation maps (such as nt06210) consisting of network elements (such as N00014). The notation of network variation maps is as follows.
Network element Coloring
Reference network Green
Variant network containing
   Human gene variant
   Pathogen gene/protein
   Environmental factor

Red
Purple
Blue
Drug-target relation Navy

Gain-of-function variant indicated by ↗
Edge   Interaction/reaction
→   Activation
⊣ Inhibition
= Complex formation
⌿ Missing interaction or reaction
⇒ Expression
⫤ Repression
— Substrate binding to enzyme or transporter
→ Enzymatic reaction or transport process
⇉ Enzyme-enzyme relation of successive reactions


Pathway view

Carbohydrate metabolism

Lipid/glycolipid metabolism

Nucleotide metabolism

Amino acid metabolism

Glycan/glycoprotein metabolism

Cofactor/vitamin metabolism

Replication, repair and transcription

Signal transduction

Cellular processes

Immune system

Endocrine system

Disease view

Cancer (See Color codes of cancer types)

Cancer signaling

Neurodegenerative disease

Endocrine and metabolic disease

Viral infection (*oncovirus)

Bacterial infection


Last updated: July 22, 2026