ABCC6 p.Asn466Tyr
| LOVD-ABCC6: |
p.Asn466Tyr
D
|
| Predicted by SNAP2: | A: D (63%), C: D (66%), D: D (75%), E: D (85%), F: D (80%), G: D (63%), H: D (75%), I: D (71%), K: D (85%), L: D (75%), M: D (66%), P: D (85%), Q: D (75%), R: D (85%), S: D (53%), T: D (53%), V: D (71%), W: D (80%), Y: D (80%), |
| Predicted by PROVEAN: | A: D, C: D, D: D, E: D, F: D, G: D, H: D, I: D, K: D, L: D, M: D, P: D, Q: D, R: D, S: D, T: D, V: D, W: D, Y: D, |
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[hide] Novel clinico-molecular insights in pseudoxanthoma... Hum Mutat. 2008 Jan;29(1):205. Vanakker OM, Leroy BP, Coucke P, Bercovitch LG, Uitto J, Viljoen D, Terry SF, Van Acker P, Matthys D, Loeys B, De Paepe A
Novel clinico-molecular insights in pseudoxanthoma elasticum provide an efficient molecular screening method and a comprehensive diagnostic flowchart.
Hum Mutat. 2008 Jan;29(1):205., [PMID:18157818]
Abstract [show]
Pseudoxanthoma elasticum (PXE) is a heritable connective tissue disorder characterized by ocular, cutaneous and cardiovascular manifestations. It is caused by mutations in the ABCC6 gene (chr. 16p13.1), encoding a transmembrane transporter protein, the substrate and biological function of which are currently unknown. A comprehensive clinical and molecular study of 38 Belgian PXE probands and 21 relatives (4 affected and 17 carriers) was performed. An extensive clinical evaluation protocol was implemented with serial fundus, skin and cardiovascular evaluation. We report on 14 novel mutations in the ABCC6 gene. We observed extensive variability in severity of both cutaneous and ocular lesions. The type of skin lesion however usually remained identical throughout the evolution of the disorder, while ophthalmological progression was mainly due to functional decline. Peripheral artery disease (53%) and stroke (15%) were significantly more prevalent than in the general population (10-30% and 0.3-0.5% respectively). Interestingly, we also observed a relatively high incidence of subclinical peripheral artery disease (41%) in our carrier population. We highlight the significance of peripheral artery disease and stroke in PXE patients as well as the subclinical manifestations in carriers. Through follow-up data we gained insight into the natural history of PXE. We propose a cost- and time-efficient two-step method of ABCC6 analysis which can be used in different populations. Additionally, we created a diagnostic flowchart and attempted to define the role of molecular analysis of ABCC6 in the work-up of a PXE patient.
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83 Genotype and Phenotype of 42 Belgian PXE Patients Patient S e x Age/Clinical score at initial presentation Age/Clinical score at most recent follow-up Mutations* Allele 1 Allele 2 01-001 F 52 - S0, E2 65 - S0, E3, HT p.R1141X c.3421C>T p.R760Q c.2279G>A 02-001 M 18 - S1, E2, VR-I 18 - S1, E2, VR-I p.R1141X c.3421C>T p.R1141X c.3421C>T 03-001 F 59 - S1, E4 75 - S1, E4, HT, IC, VR-I p.R1141X c.3421C>T p.N793L c.2379C>G 04-001 F 36 - S3, E2 36 - S3, E2 p.N466Y c.1396A>T p.R1339H c.4016G>A 05-001 F 26 - S1, E4 43 - S3, E4, VR-I p.R1141X c.3421C>T p.T364M c.1091C>T 06-001 F 36 - S2, E4 44 - S2, E4, P p.A1303P c.3907G>C None found - 07-001 M 48 - S1, E2, HT 58 - S1, E4, HT p.R1141X c.3421C>T p.R1141X c.3421C>T 08-001 F 26 - S1, E0 44 - S2, E2 p.R1141X c.3421C>T p.R760Q c.2279G>A 09-001 M 49 - S0, E3, P, GIB 65 - S2, E4, P, HT, VR-I, GIB p.A1303P c.3907G>C None found - 10-001 F 46 - S1, E2 63 - S3, E4, HT, AP,VR-I p.R1141X c.3421C>T p.R1141X c.3421C>T 11-001 M 25 - S1, E2, GIB 37 - S1, E3, GIB p.R1141X c.3421C>T None found - 12-001 F 52 - S1, E4, CI, HT, VR-I 52 - S1, E4, IC, HT, VR-I p.R1141X c.3421C>T p.R1141X c.3421C>T 12-002 F 40 - S1, E2, HT, MVP, VR-I 40 - S1, E2, HT, MVP, VR-I p.R1141X c.3421C>T p.R1141X c.3421C>T 13-001 F 65 - S0, E2 80 - S0, E2, P, VR-I p.R1141X c.3421C>T p.R1141X c.3421C>T 13-002 F 57 - S3, E4 73 - S3, E4, HT, CI, VR-I p.R1141X c.3421C>T p.R1141X c.3421C>T 14-001 F 23 - S1, E2 27 - S1, E2 p.S398R c.1194C>G - c.3364delT 15-001 F 27 - S1, E2 27 - S1, E2 p.R1138W c.3412C>T p.R1221H c.3662G>A 16-001 M 51 - S2, E2 54 - S2, E2 p.R1141X c.3421C>T p.R1141X c.3421C>T 17-001 M 42 - S1, E3, IC 58 - S1, E3, IC Del23-29 - p.R518Q c.1553G>A 18-001 M 63 - S1, E4 63 - S1, E4 p.E1400K c.4198G>A None found - 19-001 F 34 - S2, E2 50 - S2, E2 p.A1303P c.3907G>C p.R1398X c.4192C>T 20-001 F 52 - S2, E2, HT, IC, GIB 68 - S2, E4, HT, IC, GIB p.R1141X c.3421C>T None found - 21-001 M 20 - S1, E2 26 - S1, E2 p.R1141X c.3421C>T p.R1141X c.3421C>T 22-001 M 53 - S2, E2, IC, AP 69 - S2, E2, HT, IC, AP p.M751K c.2252T>A p.R1164Q c.3491G>A 23-001 F 20 - S1, E2 27 - S1, E2, P, VR-I p.G666V c.1996G>T - c.1868-5T>G 24-001 M 54 - S1, E2 57 - S1, E2 p.T500P c.1498A>C p.E521D c.1563G>C 25-001 F 50 - S1, E3, HT, MI 57 - S2, E3, HT, MI p.R1141X c.3421C>T p.R1141X c.3421C>T 26-001 M 52 - S2, E4, HT 68 - S2, E4, HT, CI p.M751K c.2252T>A Del23-29 - 27-001 F 61 - S3, E4 68 - S3, E4, P, CI, AP p.R1141X c.3421C>T - c.4104delC Allele 2 28-001 F 31 - S1, E2 32 - S1, E2 - c.1674DelC p.R765W c.2293C>T Patient S e x Age/Clinical score at initial presentation Age/Clinical score at most recent follow-up Mutations* Allele 1 Allele 2 29-001 M 30 - S1, E3 32 - S1, E3 p.E125K c.373G>A p.L1025P c.3074T>C 30-001 M 65 - S0, E2, HT, CI, MI 66 - S0, E2, HT, CI, MI p.G1405S c.4213G>A None found - 31-001 F 38 - S1, E4 39 - S1, E4 p.R1141X c.3421C>T Del23-29 - 32-001 M 22 - S1, E2 36 - S1, E2 p.R1141X c.3421C>T p.R518Q c.1553G>A 33-001 F 45 - S2, E3, P 61 - S2, E3, P, VR-II p.R1141X c.3421C>T p.R1141X c.3421C>T 34-001 F 65 - S1, E4, HT 81 - S1, E4, HT, AP p.R1141X c.3421C>T p.T1301I c.3902C>T 35-001 F 62 - S2, E2 78 - S2, E2, HT - c.175_179del p.G1354R c.4060G>C 35-002 F 58 - S2, E2 74 - S2, E4 - c.175_179del p.G1354R c.4060G>C 35-003 M 67 - S2, E2 79 - S2, E3, HT, VR-I - c.175_179del p.G1354R c.4060G>C 36-001 M 53 - S1, E4 59 - S1, E4, HT, AP p.R1114H c.3341G>A p.Q1237X c.3709C>T 37-001 M 18 - S3, E2 18 - S3, E2 p.Q981H c.2943G>T - c.3507-3C>A 38-001 F 27 - S1, E2 27 - S1, E2 p.G1263R c.3787G>A - c.4182delG Table 1 represents the sex of all patients (M = male; F= female) and the age (in years - italics), respectively at initial presentation and last follow-up.
X
ABCC6 p.Asn466Tyr 18157818:83:456
status: NEW[hide] Molecular docking simulations provide insights in ... PLoS One. 2014 Jul 25;9(7):e102779. doi: 10.1371/journal.pone.0102779. eCollection 2014. Hosen MJ, Zubaer A, Thapa S, Khadka B, De Paepe A, Vanakker OM
Molecular docking simulations provide insights in the substrate binding sites and possible substrates of the ABCC6 transporter.
PLoS One. 2014 Jul 25;9(7):e102779. doi: 10.1371/journal.pone.0102779. eCollection 2014., [PMID:25062064]
Abstract [show]
The human ATP-binding cassette family C member 6 (ABCC6) gene encodes an ABC transporter protein (ABCC6), primarily expressed in liver and kidney. Mutations in the ABCC6 gene cause pseudoxanthoma elasticum (PXE), an autosomal recessive connective tissue disease characterized by ectopic mineralization of the elastic fibers. The pathophysiology underlying PXE is incompletely understood, which can at least partly be explained by the undetermined nature of the ABCC6 substrates as well as the unknown substrate recognition and binding sites. Several compounds, including anionic glutathione conjugates (N-ethylmaleimide; NEM-GS) and leukotriene C4 (LTC4) were shown to be modestly transported in vitro; conversely, vitamin K3 (VK3) was demonstrated not to be transported by ABCC6. To predict the possible substrate binding pockets of the ABCC6 transporter, we generated a 3D homology model of ABCC6 in both open and closed conformation, qualified for molecular docking and virtual screening approaches. By docking 10 reported in vitro substrates in our ABCC6 3D homology models, we were able to predict the substrate binding residues of ABCC6. Further, virtual screening of 4651 metabolites from the Human Serum Metabolome Database against our open conformation model disclosed possible substrates for ABCC6, which are mostly lipid and biliary secretion compounds, some of which are found to be involved in mineralization. Docking of these possible substrates in the closed conformation model also showed high affinity. Virtual screening expands this possibility to explore more compounds that can interact with ABCC6, and may aid in understanding the mechanisms leading to PXE.
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No. Sentence Comment
223 (Leu463His) N466 1396A.T N466Y Missense 11 p.
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ABCC6 p.Asn466Tyr 25062064:223:25
status: NEW224 (Asn466Tyr) F568 1703C.T F568S Missense 13 p.
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ABCC6 p.Asn466Tyr 25062064:224:1
status: NEW