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| <StructureSection load='1st6' size='340' side='right' caption='Chicken full-length metavinculin, [[1st6]]' scene='' > | | <StructureSection load='1st6' size='340' side='right' caption='Chicken full-length metavinculin, [[1st6]]' scene='' > |
| == Function == | | == Function == |
| [[Vinculin|Vinculins]] (VCLs) are involved in adhesion by linking integrin molecules to the actin cytoskeleton. Its head domain (Vd1) can bind to [[Talin|talin]] or to [[Actinin|alpha-actinin]] at their respective VCL Binding Sites (VBS). A splice variant of vinculin is meta-vinculin (m-VCL). The protein raver1 RNA Recognition Motif (RRM) forms a complex with VCL or m-VCL. <scene name='Sandbox_27/Role_i997_vinculin_head-tail_1/1'>Vinculin Autoinhibition</scene> is achieved through a high affinity intramolecular interaction between tail (orange) and head (aqua) domains ([[1st6]]). Energetically, I997 is key to maintaining this autoinhibition. '''Metavinculin''' is a splice version of VCL containing an extra ca. 70 amino acids in the C-terminal domain. | | [[Vinculin|Vinculins]] (VCLs) are involved in adhesion by linking integrin molecules to the actin cytoskeleton. Its head domain (Vd1) can bind to [[Talin|talin]] or to [[Actinin|alpha-actinin]] at their respective VCL Binding Sites (VBS)<ref>PMID:11152287</ref>. The protein raver1 RNA Recognition Motif (RRM) forms a complex with VCL or m-VCL. '''Metavinculin''' (m-VCL) is a splice version of VCL containing an extra ca. 70 amino acids in the C-terminal domain. |
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| | == Relevance == |
| | Loss of VCL could be used as a prognostic factor for colorectal cancer se it promotes metastasis<ref>PMID:25496021</ref>. |
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| == Structural highlights == | | == Structural highlights == |
Revision as of 09:31, 13 December 2016
| Function
Vinculins (VCLs) are involved in adhesion by linking integrin molecules to the actin cytoskeleton. Its head domain (Vd1) can bind to talin or to alpha-actinin at their respective VCL Binding Sites (VBS)[1]. The protein raver1 RNA Recognition Motif (RRM) forms a complex with VCL or m-VCL. Metavinculin (m-VCL) is a splice version of VCL containing an extra ca. 70 amino acids in the C-terminal domain.
Relevance
Loss of VCL could be used as a prognostic factor for colorectal cancer se it promotes metastasis[2].
Structural highlights
Vinculin Autoinhibition is achieved through a high affinity intramolecular interaction between tail (orange) and head (aqua) domains (1st6). Energetically, I997 is key to maintaining this autoinhibition.
- ↑ Palovuori R, Eskelinen S. Role of vinculin in the maintenance of cell-cell contacts in kidney epithelial MDBK cells. Eur J Cell Biol. 2000 Dec;79(12):961-74. PMID:11152287 doi:https://dx.doi.org/10.1078/0171-9335-00120
- ↑ Li T, Guo H, Song Y, Zhao X, Shi Y, Lu Y, Hu S, Nie Y, Fan D, Wu K. Loss of vinculin and membrane-bound beta-catenin promotes metastasis and predicts poor prognosis in colorectal cancer. Mol Cancer. 2014 Dec 11;13:263. doi: 10.1186/1476-4598-13-263. PMID:25496021 doi:https://dx.doi.org/10.1186/1476-4598-13-263
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3D Structures of Vinculin
Updated on 13-December-2016
{"openlevels":0}
- Vinculin
- talin – hVCL - human
- alpha-actinin – hVCL C-terminal
- 1st6 - hVCL C-terminal + raver1 RRM
- 4pr9 - hVCL C-terminal + lipid
- 3h2u – hVCL Vd1 + raver1 RRM
- 2ibf, 2hsq, 2gww - hVCL Vd1 + SfVCL binding sites from Shigella flexneri
- 1ydi - hVCL Vd1+hActinin VBS
- 1t01 - cVCL Vd1+mTalin VBS – chicken
- 1syq, 1rkc, 1rke – hVCL Vd1+hTalin VBS
- 3zdl – cVCL Vd1 + amyloid β precursor protein N terminal
- Metavinculin
- 3myi – m-VCL tail domain
- 3rf3 - hm-VCL + invasin IPAA
- 3s90 - hm-VCL head domain + mTalin-1 peptide
- 4dj9 - hm-VCL head domain + hTalin-1 peptide
- 3tj5 - hm-VCL head domain + Sca-family protein peptide
- 3tj6 - hm-VCL head domain + protein Ps 120 peptide
- 4ehp - hm-VCL head domain + catenin α-1 residues 277-382
- 3vf0 – hm-VCL residues 856-1134 + ribonucleoprotein PTB-binding
- 2gdc – cm-VCL Vd1+SfInvasin C-terminal
- 1xwj - cm-VCL Vd1+cTalin VBS3
- 1zvz, 1zw2, 1zw3, 1u6h - cm-VCL Vd1+cTalin rod
- 1st6 – cm-VCL
- 4e17, 4e18 - cm-VCL Vd1 + catenin α-1 VCL-binding domain
References
proteopedia link