STRING 9.05 
F2 [ENSP00000308541]
 
coagulation factor II (thrombin); Thrombin, which cleaves bonds after Arg and Lys, converts fibrinogen to fibrin and activates factors V, VII, VIII, XIII, and, in complex with thrombomodulin, protein C. Functions in blood homeostasis, inflammation and wound healing
SERPIND1 [ENSP00000215727]
 
serpin peptidase inhibitor, clade D (heparin cofactor), member 1; Thrombin inhibitor activated by the glycosaminoglycans, heparin or dermatan sulfate. In the presence of the latter, HC-II becomes the predominant thrombin inhibitor in place of antithrombin III (AT-III). Also inhibits chymotrypsin, but in a glycosaminoglycan-independent manner
Evidence suggesting a functional link:
Neighborhood in the Genome:  
none / insignificant.
    
Gene Fusions:  
none / insignificant.
    
Cooccurence Across Genomes:  
none / insignificant.
    
Co-Expression:   yes (score 0.695).  
Experimental/Biochemical Data:   yes (score 0.983).  
Association in Curated Databases:   yes (score 0.800).  
Co-Mentioned in PubMed Abstracts:   yes (score 0.610). In addition, putative homologs are mentioned together in other species (score 0.051).  
Combined Score:
 
0.999
 
Evidence for specific actions:
Binding:yes (score: 0.995)