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Active ingredient: Natalizumab - Chemisty and Biological Activity

Chemisty and Biological Activity

Chemical Formula

Not Available

Chemical Name

Humanized anti a4 integrin antibody

Chemical Structure NA

Molecular Weight

Not Available

Physical State

Liquid

Melting Point

61 oC (FAB fragment), 71 oC (whole mAb) - Vermeer, A.W.P. & Norde, W., Biophys. J. 78:394-404 (2000).

Water Solubility

Not Available

Isoelectric Point

Not Available

Organisms Affected

Humans and other mammals

Phase 1 Metabolising Enzyme (1-st Step of Metabolism)

Not Available

Primary Drug Target
NameIntegrin alpha-4
Gene NameITGA4
SynonymsIntegrin alpha-4 precursor; Integrin alpha-IV; VLA-4; CD49d
Specific FunctionIntegrins alpha-4/beta-1 (VLA-4) and alpha-4/beta-7 are receptors for fibronectin. They recognize one or more domains within the alternatively spliced CS-1 and CS-5 regions of fibronectin. They are also receptors for VCAM1. Integrin alpha- 4/beta-1 recognizes the sequence Q-I-D-S in VCAM1. Integrin alpha- 4/beta-7 is also a receptor for MADCAM1. It recognizes the sequence L-D-T in MADCAM1. On activated endothelial cells integrin VLA-4 triggers homotypic aggregation for most VLA-4-positive leukocyte cell lines. It may also participate in cytolytic T-cell interactions with target cells

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