STRING 9.05 
CCNA2 [ENSP00000274026]
 
cyclin A2; Essential for the control of the cell cycle at the G1/S (start) and the G2/M (mitosis) transitions
CDKN1B [ENSP00000228872]
 
cyclin-dependent kinase inhibitor 1B (p27, Kip1); Important regulator of cell cycle progression. Involved in G1 arrest. Potent inhibitor of cyclin E- and cyclin A-CDK2 complexes. Positive regulator of cyclin D-dependent kinases such as CDK4. Regulated by phosphorylation and degradation events
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 0.999). In addition, putative homologs were found interacting in other species (score 0.252).  
Association in Curated Databases:   yes (score 0.800).  
Co-Mentioned in PubMed Abstracts:   yes (score 0.345).  
Combined Score:
 
0.999
 
Evidence for specific actions:
Binding:yes (score: 0.999)