NCBI Biosystems Database now available

The NCBI Biosystems database has now gone public. The NCBI BioSystems Database currently contains biological pathways from two source databases, KEGG and the EcoCyc subset of BioCyc. As an added bonus it uses the same search interface as other NCBI databases as pubmed and Entrez Gene.
You can use the database to:
List the genes, proteins, and small molecules that are involved in a biological pathway. Find out more
Find the pathways in which a given gene or protein is involved. Find out more.
Find the pathways in which a specific small molecule is involved. Find out more.
Retrieve 3D structures for proteins involved in a biosystem. Find out more
Find related biosystems that are linked to each other because they share an identical protein sequence or have another relationship. Find out more.
Diarmuid