Function

Agrin (Agr) is involved in the embryogenesis of the neuromuscular junction. It is involved in the aggregation of acetylcholine receptors. [1]

Relevance

Agr is an inducer of mammalian heart regeneration[2].

Disease

Agr is overexpressed in brains of Alzheimer Disease patients. Agr is associated with myasthenic syndrome.

Structural highlights

Agr N-terminal domain binds laminin. The C-terminal of Agr has 3 laminin-like globular domains (LMB) G1-G3 and 4 epidermal growth factor-like domains. Agr binds heparan sulfate post-translationally. Other Agr domains are: Kazal type serine protease inhibitor.

3D Structures of Agrin

Agrin 3D structures


Chicken agrin (PDB code 3i70).

Drag the structure with the mouse to rotate

ReferencesReferences

  1. Tsen G, Halfter W, Kroger S, Cole GJ. Agrin is a heparan sulfate proteoglycan. J Biol Chem. 1995 Feb 17;270(7):3392-9. PMID:7852425
  2. Bassat E, Mutlak YE, Genzelinakh A, Shadrin IY, Baruch Umansky K, Yifa O, Kain D, Rajchman D, Leach J, Riabov Bassat D, Udi Y, Sarig R, Sagi I, Martin JF, Bursac N, Cohen S, Tzahor E. The extracellular matrix protein agrin promotes heart regeneration in mice. Nature. 2017 Jul 13;547(7662):179-184. doi: 10.1038/nature22978. Epub 2017 Jun 5. PMID:28581497 doi:http://dx.doi.org/10.1038/nature22978

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