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Nephrin is a protein necessary for the proper functioning of the renal filtration barrier. The renal filtration barrier consists of fenestrated endothelial cells, the glomerular basement membrane, and the podocytes of epithelial cells. Nephrin is a transmembrane protein that is a structural component of the slit diaphragm.[1] They are present on the tips of the podocytes and maintain the normal relationship between the basement membrane and the podocytes of the epithelial cells.

A defect in the gene for nephrin, NPHS1, is associated with congenital nephrotic syndrome of the Finnish type and causes massive amounts of protein to be leaked into the urine, or proteinuria. Nephrin is also required for cardiovascular development.[2]


Nephrin has been shown to interact with:

See also


  1. "Entrez Gene: NPHS1 nephrosis 1, congenital, Finnish type (nephrin)".
  2. Wagner N, Morrison H, Pagnotta S, Michiels JF, Schwab Y, Tryggvason K, Schedl A, Wagner KD (2011-03-29). "The podocyte protein nephrin is required for cardiac vessel formation". Human Molecular Genetics. 20 (11): 2182–94. doi:10.1093/hmg/ddr106. PMID 21402589.
  3. 3.0 3.1 3.2 3.3 Lehtonen S, Lehtonen E, Kudlicka K, Holthöfer H, Farquhar MG (Sep 2004). "Nephrin forms a complex with adherens junction proteins and CASK in podocytes and in Madin-Darby canine kidney cells expressing nephrin". Am. J. Pathol. 165 (3): 923–36. doi:10.1016/S0002-9440(10)63354-8. PMC 1618613. PMID 15331416.
  4. Lahdenperä J, Kilpeläinen P, Liu XL, Pikkarainen T, Reponen P, Ruotsalainen V, Tryggvason K (Aug 2003). "Clustering-induced tyrosine phosphorylation of nephrin by Src family kinases". Kidney Int. 64 (2): 404–13. doi:10.1046/j.1523-1755.2003.00097.x. PMID 12846735.
  5. Verma R, Wharram B, Kovari I, Kunkel R, Nihalani D, Wary KK, Wiggins RC, Killen P, Holzman LB (Jun 2003). "Fyn binds to and phosphorylates the kidney slit diaphragm component Nephrin". J. Biol. Chem. 278 (23): 20716–23. doi:10.1074/jbc.M301689200. PMID 12668668.
  6. Liu G, Kaw B, Kurfis J, Rahmanuddin S, Kanwar YS, Chugh SS (Jul 2003). "Neph1 and nephrin interaction in the slit diaphragm is an important determinant of glomerular permeability". J. Clin. Invest. 112 (2): 209–21. doi:10.1172/JCI18242. PMC 164293. PMID 12865409.
  7. Gerke P, Huber TB, Sellin L, Benzing T, Walz G (Apr 2003). "Homodimerization and heterodimerization of the glomerular podocyte proteins nephrin and NEPH1". J. Am. Soc. Nephrol. 14 (4): 918–26. doi:10.1097/01.ASN.0000057853.05686.89. PMID 12660326.
  8. Schwarz K, Simons M, Reiser J, Saleem MA, Faul C, Kriz W, Shaw AS, Holzman LB, Mundel P (Dec 2001). "Podocin, a raft-associated component of the glomerular slit diaphragm, interacts with CD2AP and nephrin". J. Clin. Invest. 108 (11): 1621–9. doi:10.1172/JCI12849. PMC 200981. PMID 11733557.

Further reading

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