STRING 9.05 
NTF4 [ENSP00000301411]
neurotrophin 4; Target-derived survival factor for peripheral sensory sympathetic neurons
NTRK2 [ENSP00000277120]
neurotrophic tyrosine kinase, receptor, type 2; Receptor for brain-derived neurotrophic factor (BDNF), neurotrophin-3 and neurotrophin-4/5 but not nerve growth factor (NGF). Involved in the development and/or maintenance of the nervous system. This is a tyrosine-protein kinase receptor. Known substrates for the TRK receptors are SHC1, PI-3 kinase, and PLC- gamma-1
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 0.983).  
Association in Curated Databases:   yes (score 0.900).  
Co-Mentioned in PubMed Abstracts:   yes (score 0.751). In addition, putative homologs are mentioned together in other species (score 0.062).  
Combined Score:
Evidence for specific actions:
Binding:yes (score: 0.998)