The Interact direction is ˇ°Entity1ˇ± to ˇ°Entity2ˇ±, when it exists.

The mark * is used to separate the members of complex.

The mark # is used to separate the members of family.

The mark ~ is used to separate the members of complex family.

ˇ°ReferenceIDˇ± mainly contain PubMed ID, and some with doi number.

"Effect" is with 3 status: Activation (A), Inhibition (I) and Unspecified (U).

ˇ°Modificationˇ± abbreviations list below:
Acetylation/Deacetylation										Ac+/Ac-
Biotinylation/Debiotinylation								Biotin+/Biotin-
Decanoylation/Dedecanoylation							Decanoyl+/Decanoyl-
Dimethylation/Dedimethylation							Me2+/Me2-
Farnesylation/Defarnesylation								Farnesyl+/Farnesyl-
Fucosylation/Defucosylation									Fucosyl+/Fucosyl-
Galactosylation/Degalactosylation						Gal+/Gal-
Geranylgeranylation/Degeranylgeranylation		GG+/GG-
Glucosylation/Deglucosylation								Glucosyl+/Glucosyl-
Glycosylation/Deglycosylation								Glycosyl+/Glycosyl-
Glycylation/Deglycylation										Glycyl+/Glycyl-
Hydroxylation/Dehydroxylation							Hydroxyl+/Hydroxyl-
Lipoylation/Delipoylation										Lipoyl+/Lipoyl-
Methylation/Demethylation									Me+/Me-
Myristoylation/Demyristoylation							Myristoyl+/Myristoyl-
Octanoylation/Deoctanoylation							Octanoyl+/Octanoyl-
Palmitoylation/Depalmitoylation							Palmitoyl+/Palmitoyl-
Phosphopantetheine/Dephosphopantetheine	Phosphopantetheine+/Phosphopantetheine-
Phosphorylation/Dephosphorylation					Phos+/Phos-
Sumoylation/Desumoylation									Sumo+/Sumo-
Trimethylation/Detrimethylation							Me3+/Me3-
Ubiquitination/Deubiquitination							Ub+/Ub-

PathPPI v1.0 (2013.11.16) contains:
PID (contains only the data curated by PID, version 2012.03.17)
BioCarta (from PID, version 2010.08.11)
Reactome (version 2012.03.14)
NetPath (downloaded 2012.04.14)
INOH (version 2011.01.31)
SPIKE (version 2011.03.22
KEGG (downloaded 2009.10.12)
HPRD (version R9)
IntAct (downloaded 2013.10.22)
BioGRID (version 3.2.105)
MINT (version 2013.03.26)
DIP (version 2013.07.07)