STRING 9.05 
PDZD3 [ENSP00000327107]
 
PDZ domain containing 3; Acts as a regulatory protein that associates with GUCY2C and negatively modulates its heat-stable enterotoxin-mediated activation. Stimulates SLC9A3 activity in the presence of elevated calcium ions
SLC22A4 [ENSP00000200652]
 
solute carrier family 22 (organic cation/ergothioneine transporter), member 4; Sodium-ion dependent, low affinity carnitine transporter. Probably transports one sodium ion with one molecule of carnitine. Also transports organic cations such as tetraethylammonium (TEA) without the involvement of sodium. Relative uptake activity ratio of carnitine to TEA is 1.78. A key substrate of this transporter seems to be ergothioneine (ET)
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:   yes (score 0.609).  
Association in Curated Databases:  
none / insignificant.
    
Co-Mentioned in PubMed Abstracts:   yes (score 0.162).  
Combined Score:
 
0.650
 
Evidence for specific actions:
Binding:yes (score: 0.609)