4ydp

Structural highlights

Disease

[LDB3_HUMAN] Defects in LDB3 are the cause of cardiomyopathy dilated type 1C (CMD1C) [MIM:601493]. Dilated cardiomyopathy is a disorder characterized by ventricular dilation and impaired systolic function, resulting in congestive heart failure and arrhythmia. Patients are at risk of premature death.^{[1] [2]} Defects in LDB3 are the cause of left ventricular non-compaction type 3 (LVNC3) [MIM:601493]. Left ventricular non-compaction is characterized by numerous prominent trabeculations and deep intertrabecular recesses in hypertrophied and hypokinetic segments of the left ventricle. Defects in LDB3 are the cause of myopathy myofibrillar type 4 (MFM4) [MIM:609452]. A neuromuscular disorder characterized by distal and proximal muscle weakness with signs of cardiomyopathy and neuropathy.

Function

[LDB3_HUMAN] May function as an adapter in striated muscle to couple protein kinase C-mediated signaling via its LIM domains to the cytoskeleton.[:]

See Also

• PDZ and LIM domain protein
• ZASP protein

References

1. ↑ Vatta M, Mohapatra B, Jimenez S, Sanchez X, Faulkner G, Perles Z, Sinagra G, Lin JH, Vu TM, Zhou Q, Bowles KR, Di Lenarda A, Schimmenti L, Fox M, Chrisco MA, Murphy RT, McKenna W, Elliott P, Bowles NE, Chen J, Valle G, Towbin JA. Mutations in Cypher/ZASP in patients with dilated cardiomyopathy and left ventricular non-compaction. J Am Coll Cardiol. 2003 Dec 3;42(11):2014-27. PMID:14662268
2. ↑ Arimura T, Hayashi T, Terada H, Lee SY, Zhou Q, Takahashi M, Ueda K, Nouchi T, Hohda S, Shibutani M, Hirose M, Chen J, Park JE, Yasunami M, Hayashi H, Kimura A. A Cypher/ZASP mutation associated with dilated cardiomyopathy alters the binding affinity to protein kinase C. J Biol Chem. 2004 Feb 20;279(8):6746-52. Epub 2003 Dec 3. PMID:14660611 doi:10.1074/jbc.M311849200