STRING 9.05 
GNA15 [ENSP00000262958]
 
guanine nucleotide binding protein (G protein), alpha 15 (Gq class); Guanine nucleotide-binding proteins (G proteins) are involved as modulators or transducers in various transmembrane signaling systems
GNAT2 [ENSP00000251337]
 
guanine nucleotide binding protein (G protein), alpha transducing activity polypeptide 2; Guanine nucleotide-binding proteins (G proteins) are involved as modulators or transducers in various transmembrane signaling systems. Transducin is an amplifier and one of the transducers of a visual impulse that performs the coupling between rhodopsin and cGMP-phosphodiesterase
Evidence suggesting a functional link:
Neighborhood in the Genome:  
none / insignificant.
    
Gene Fusions:  
none / insignificant.
    
Cooccurence Across Genomes:  
none / insignificant.
    
Co-Expression:  
none / insignificant.
    
Experimental/Biochemical Data:  
none / insignificant.
    
Association in Curated Databases:   yes (score 0.900).  
Co-Mentioned in PubMed Abstracts:   yes (score 0.310).  
Combined Score:
 
0.902
 
Note: the two proteins have some sequence similarity (324.1 bits over 346 amino acids. click here to see the alignment).
Evidence for specific actions:
Binding:yes (score: 0.900)