STRING 9.05 
CD40 [ENSP00000361359]
CD40 molecule, TNF receptor superfamily member 5; Receptor for TNFSF5/CD40LG
BIRC3 [ENSP00000263464]
baculoviral IAP repeat-containing 3; Apoptotic suppressor. The BIR motifs region interacts with TNF receptor associated factors 1 and 2 (TRAF1 and TRAF2) to form an heteromeric complex, which is then recruited to the tumor necrosis factor receptor 2 (TNFR2)
Evidence suggesting a functional link:
Neighborhood in the Genome:  
none / insignificant.
Gene Fusions:  
none / insignificant.
Cooccurence Across Genomes:  
none / insignificant.
Co-Expression:   yes (score 0.107). In addition, putative homologs are coexpressed in other species (score 0.065).  
Experimental/Biochemical Data:   yes (score 0.621). In addition, putative homologs were found interacting in other species (score 0.212).  
Association in Curated Databases:   yes (score 0.900).  
Co-Mentioned in PubMed Abstracts:   yes (score 0.911).  
Combined Score:
Evidence for specific actions:
Binding:yes (score: 0.926)  
Activation:yes (score: 0.800)