Biological Unit: Difference between revisions
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==Examples== | ==Examples== | ||
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Model | Model | ||
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* The contacts in this biological unit differ from those in the asymmetric unit. | * The contacts in this biological unit differ from those in the asymmetric unit. | ||
**The "author specified" assembly (in this case the same as the [[asymmetric unit]]) appears unlikely in view of the assembly predicted by [[#Protein Interfaces, Surfaces and Assemblies Server (PISA)|PISA]], which has a much larger buried surface area. | **The "author specified" assembly (in this case the same as the [[asymmetric unit]]) appears unlikely in view of the assembly predicted by [[#Protein Interfaces, Surfaces and Assemblies Server (PISA)|PISA]], which has a much larger buried surface area. | ||
Truncated proteins may form oligomers that are impossible in the native protein. For example, [[1bk5]] (karyopherin alpha) is a truncated part of the natural chain, and forms a dimer that would be prevented by the full-length chain. Dimerization is dependent upon Y397. Mutation Y397D prevents this artifactual dimerization, leading to the monomer [[1ee5]]. | Truncated proteins may form oligomers that are impossible in the native protein. For example, [[1bk5]] (karyopherin alpha) is a truncated part of the natural chain, and forms a dimer that would be prevented by the full-length chain. Dimerization is dependent upon Y397. Mutation Y397D prevents this artifactual dimerization, leading to the monomer [[1ee5]]. | ||