Reaction: Membrane fusion
- in pathway: Budding 
  The final step in the budding process is the fusion of the lipid membrane surrounding the virion core, producing an extracellular enveloped virus particle (Nayak et al. 2004).
Reaction - small molecule participants:
  
  SA [plasma membrane] 
  
  Reactome.org reaction link: R-HSA-168860
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Reaction input - small molecules:
      
    
    sialic acid 
    
  
  Reaction output - small molecules:
  
Reactome.org link: R-HSA-168860
    
      
    