41. Laccases can be polymeric, and the enzymatically active form can be a dimer or trimer . 42. Ferulic acid can also form trimers and tetramers, known as triferulic and tetraferulic acids respectively. 43. It is an epicatechin trimer found in grape ( " Vitis vinifera " ). 44. PII proteins exist in trimers in vivo and bind ATP in a cleft between the subunits. 45. Hydrophobic residues on ?-helical bundles are located on the ends of each trimer monomer. 46. It can transfer energy to another atom in the trimer , even though they are separated. 47. In these crystals, the carotenoid bacterioruberin binds to crevices between the subunits of the trimer . 48. It is the product of the polymerisation of cyanic acid together with its cyclic trimer cyanuric acid. 49. The authors of the original study suggested that the ASIC1 trimer resembles a hand holding a ball. 50. The trimer provides a surface for interaction between the antigen-antibody complex and other complement components.
