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Entactin

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Entactin

(Science: protein) a dumbbell shaped 150 kd sulphated glycoprotein that is found in all basement membranes. It binds to laminin, forming a very stable 1:1 complex (kd = 10nM) and almost all laminin preparations contain entactin. The N terminal globular domain can self aggregate, whilst the c terminal globular domain binds to the short arm of laminin and to collagen iv. The connecting rod has 5-6 egf type cysteine rich repeats, one of which has an RGD sequence for cellular interaction.