31. The virus encodes these activities in its non-structural proteins . 32. Other structural proteins that are important for neuronal function are actin and the tubulin of microtubules. 33. Additionally, structural protein analysis can be done automatically using a combination of NMR and X-ray crystallography. 34. Most of the genome coded for structural proteins . 35. As tendons develop they lay down collagen, which is the main structural protein of connective tissue. 36. Other studies have shown that Hsp90 interacts with various structural proteins , ribosomal components and metabolic enzymes. 37. NS2-3 protease is the enzyme responsible for proteolytic cleavage between the non-structural proteins NS2 and NS3. 38. More information on the structural proteins can be found in the paramyxovirus protein section or here. 39. These are proteins that mainly originate as specific fragments of pre-existing structural proteins like collagen or plasminogen. 40. This technique allows for measurements of cell stiffness and provides insights into the functioning of structural proteins .