LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Dynamin enzyme. Computer model showing three perspective views of the tertiary structure of the enzyme dynamin. The two protein chains that form a pleckstrin homology (PH) domain can be seen (green and purple). Domains are structural regions of enzymes that are often actively involved in biological processes. Dynamin is primarily responsible for facilitating the absorption of material from outside the cell (endocytosis) in eukaryotic cells. Dynamin's PH domain is thought to play an important role in the enzyme's function in endocytosis.
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