LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Dynamin enzyme. Computer model showing the tertiary structure of the enzyme dynamin. Alpha helices (green coils), beta sheets (arrows) and linking regions (thin, wire-like) can be seen, forming a pleckstrin homology (PH) domain. 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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