STRING 9.05 
COL2A1 [ENSP00000369889]
collagen, type II, alpha 1; Type II collagen is specific for cartilaginous tissues. It is essential for the normal embryonic development of the skeleton, for linear growth and for the ability of cartilage to resist compressive forces
COL11A1 [ENSP00000351163]
collagen, type XI, alpha 1; May play an important role in fibrillogenesis by controlling lateral growth of collagen II fibrils
Evidence suggesting a functional link:
Neighborhood in the Genome:  
none / insignificant.
Gene Fusions:  
none / insignificant.
Cooccurence Across Genomes:   yes (score 0.521).  
none / insignificant.
Experimental/Biochemical Data:   yes (score 0.999).  
Association in Curated Databases:   yes (score 0.900).  
Co-Mentioned in PubMed Abstracts:   yes (score 0.726).  
Combined Score:
Note: the two proteins have some sequence similarity (1568.7 bits over 1415 amino acids. click here to see the alignment).
Evidence for specific actions:
Binding:yes (score: 0.900)  
Reaction:yes (score: 0.900)