STRING 9.05 
PDCD1LG2 [ENSP00000380855]
programmed cell death 1 ligand 2; Involved in the costimulatory signal, essential for T- cell proliferation and IFNG production in a PDCD1-independent manner. Interaction with PDCD1 inhibits T-cell proliferation by blocking cell cycle progression and cytokine production (By similarity)
PDCD1 [ENSP00000335062]
programmed cell death 1; Possible cell death inducer, in association with other factors
Evidence suggesting a functional link:
Neighborhood in the Genome:  
none / insignificant.
Gene Fusions:  
none / insignificant.
Cooccurence Across Genomes:  
none / insignificant.
none / insignificant.
Experimental/Biochemical Data:   yes (score 0.621). In addition, putative homologs were found interacting in other species (score 0.662).  
Association in Curated Databases:   yes (score 0.800).  
Co-Mentioned in PubMed Abstracts:   yes (score 0.657).  
Combined Score:
Evidence for specific actions:
Binding:yes (score: 0.839)