STRING 9.05 
PGK1 [ENSP00000362413]
phosphoglycerate kinase 1; In addition to its role as a glycolytic enzyme, it seems that PGK-1 acts as a polymerase alpha cofactor protein (primer recognition protein)
GAPDH [ENSP00000229239]
glyceraldehyde-3-phosphate dehydrogenase; Independent of its glycolytic activity it is also involved in membrane trafficking in the early secretory pathway
Evidence suggesting a functional link:
Neighborhood in the Genome:   None, but homologous genes are neighbors in other genomes (score 0.792).  
Gene Fusions:  
none / insignificant.
Cooccurence Across Genomes:  
none / insignificant.
Co-Expression:   yes (score 0.253). In addition, putative homologs are coexpressed in other species (score 0.548).  
Experimental/Biochemical Data:   yes (score 0.846). In addition, putative homologs were found interacting in other species (score 0.130).  
Association in Curated Databases:   yes (score 0.900).  
Co-Mentioned in PubMed Abstracts:   yes (score 0.946). In addition, putative homologs are mentioned together in other species (score 0.793).  
Combined Score:
Evidence for specific actions:
Binding:yes (score: 0.932)