DISCO: import PANTHER data

DISCO id: nlx_84521

Data is available in BioPAX format ftp://ftp.pantherdb.org/pathway/current_release/BioPAX.tar.gz

This resource is for classifying genes/proteins into families - functional or otherwise. It is also annotations of proteins in pathways, and their relationships to eachother, curated based on inter-species evidence. We will need to make sure to sync up the protein family designations with PFAM.