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3w8i

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Crystal structure of CCM3 in complex with the C-terminal regulatory domain of MST4

Structural highlights

3w8i is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.4Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

PDC10_HUMAN Hereditary cerebral cavernous malformation. Defects in PDCD10 are the cause of cerebral cavernous malformations type 3 (CCM3) [MIM:603285. Cerebral cavernous malformations (CCMs) are congenital vascular anomalies of the central nervous system that can result in hemorrhagic stroke, seizures, recurrent headaches, and focal neurologic deficits. CCMs have an incidence of 0.1%-0.5% in the general population and usually present clinically during the 3rd to 5th decade of life. The lesions are characterized by grossly enlarged blood vessels consisting of a single layer of endothelium and without any intervening neural tissue, ranging in diameter from a few millimeters to several centimeters.^[1]

Function

PDC10_HUMAN Promotes cell proliferation. Modulates apoptotic pathways. Increases mitogen-activated protein kinase activity and MST4 activity. Important for cell migration, and for normal structure and assembly of the Golgi complex. Important for KDR/VEGFR2 signaling. Increases the stability of KDR/VEGFR2 and prevents its breakdown. Required for normal cardiovascular development. Required for normal angiogenesis, vasculogenesis and hematopoiesis during embryonic development (By similarity).^[2] ^[3] ^[4]

Publication Abstract from PubMed

Defects in cerebral cavernous malformation protein CCM3 result in cerebral cavernous malformation (CCM), a common vascular lesion of the human CNS. CCM3 functions as an adaptor protein that interacts with various signal proteins. Among these partner proteins, germinal center kinase III (GCKIII) proteins have attracted significant interest because GCKIII-CCM3 interactions play essential roles in vascular physiology. Here, we report the crystal structures of CCM3 in complex with the C-terminal regulatory domains of GCKIII (GCKIIIct) at 2.4 A resolution. Our results reveal that GCKIIIct adopts a fold closely resembling that of the CCM3 N-terminal dimeric domain. GCKIIIct heterodimerizes with CCM3 in a manner analogous to CCM3 homodimerization. The remarkable structural rearrangement of CCM3 induced by GCKIIIct binding and the ensuing interactions within CCM3 are characterized as the structural determinants for GCKIIIct-CCM3 heterodimerization. Taken together, these findings provide a precise structural basis for GCKIIIct-CCM3 heterodimerization and the functional performance of GCKIII mediated by CCM3.

Structural Basis for the Unique Heterodimeric Assembly between Cerebral Cavernous Malformation 3 and Germinal Center Kinase III.,Xu X, Wang X, Zhang Y, Wang DC, Ding J Structure. 2013 Jun 4;21(6):1059-66. doi: 10.1016/j.str.2013.04.007. Epub 2013, May 9. PMID:23665169^[5]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Bergametti F, Denier C, Labauge P, Arnoult M, Boetto S, Clanet M, Coubes P, Echenne B, Ibrahim R, Irthum B, Jacquet G, Lonjon M, Moreau JJ, Neau JP, Parker F, Tremoulet M, Tournier-Lasserve E. Mutations within the programmed cell death 10 gene cause cerebral cavernous malformations. Am J Hum Genet. 2005 Jan;76(1):42-51. Epub 2004 Nov 12. PMID:15543491 doi:10.1086/426952
↑ Bergametti F, Denier C, Labauge P, Arnoult M, Boetto S, Clanet M, Coubes P, Echenne B, Ibrahim R, Irthum B, Jacquet G, Lonjon M, Moreau JJ, Neau JP, Parker F, Tremoulet M, Tournier-Lasserve E. Mutations within the programmed cell death 10 gene cause cerebral cavernous malformations. Am J Hum Genet. 2005 Jan;76(1):42-51. Epub 2004 Nov 12. PMID:15543491 doi:10.1086/426952
↑ Ma X, Zhao H, Shan J, Long F, Chen Y, Chen Y, Zhang Y, Han X, Ma D. PDCD10 interacts with Ste20-related kinase MST4 to promote cell growth and transformation via modulation of the ERK pathway. Mol Biol Cell. 2007 Jun;18(6):1965-78. Epub 2007 Mar 14. PMID:17360971 doi:10.1091/mbc.E06-07-0608
↑ Fidalgo M, Fraile M, Pires A, Force T, Pombo C, Zalvide J. CCM3/PDCD10 stabilizes GCKIII proteins to promote Golgi assembly and cell orientation. J Cell Sci. 2010 Apr 15;123(Pt 8):1274-84. doi: 10.1242/jcs.061341. Epub 2010 Mar, 23. PMID:20332113 doi:10.1242/jcs.061341
↑ Xu X, Wang X, Zhang Y, Wang DC, Ding J. Structural Basis for the Unique Heterodimeric Assembly between Cerebral Cavernous Malformation 3 and Germinal Center Kinase III. Structure. 2013 Jun 4;21(6):1059-66. doi: 10.1016/j.str.2013.04.007. Epub 2013, May 9. PMID:23665169 doi:10.1016/j.str.2013.04.007