ABCMdb

ABCC7 p.Ser50Pro

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Publications

PMID: 10875853 [PubMed] Casals T et al: "Heterogeneity for mutations in the CFTR gene and clinical correlations in patients with congenital absence of the vas deferens."

No. Sentence Comment

67 The abnormally migrating fragments were characterized by sequencing with the DyeDeoxy™ chain terminator method on an variant and another mutation (S50P, 2751ϩ3A→G, A1006E I. Description of the seven novel CFTR mutations and five polymorphisms in CAVD patients Mutation Location Nucleotide Amino acid Markers haplotype changes change (T)n-8CA-17bTA-M470V S50P exon 2 280 T→C Ser → Pro 5T/7T-16-31-ND D110Y exon 4 460 G→T Asp acid → Tyr 7T-17-7-V470 L383S exon 8 1280 T→C Leu → Ser 7T-16-7-M470 H484Y exon 10 1582 C→T His → Tyr no phase-M470 2751ϩ3A→G intron 14a 2751ϩ3 A→G - 5T-16-30-ND Q890R exon 15 2801 A→G Glu → Arg 7T-16-7/29-V470 P1021S exon 17a 3193 C→T Pro → Ser 7T-17-7-M470 Polymorphisms 104C/A 5ЈUTR - 296ϩ128G/C intron 3 - 741C/T exon 6a Ile203 no change 3195A/T exon 17a Pro1021 no change 3212T/C exon 17a Ile1027 no change CAVD ϭ congenital absence of the vas deferens; ND ϭ not determined; 5ЈUTR ϭ 5Ј untranslated region. Login to comment
78 Except for the S50P mutation, which is associated to 5T and 7T alleles in CAVD patients, the other three infections. Login to comment
95 CFTR genotypes in 24 patients with congenital unilateral absenceTable III. CFTR genotypes in 110 patients with congenital bilateral absence of the vas deferens of the vas deferens Mutations IVS8-6(T) n (%)Mutations IVS8-6(T) n (%) Two CFTR mutations 62 (56) Two CFTR mutations 5 (21) ∆F508/- 5T/9T 2 (8)∆F508/- 5T/9T 17 (15) G542X/- 5T/9T 6 (5) G542X/- 5T/9T 1 3732delA/- 5T/7T 1∆F508/L206W 9T/9T 6 (5) ∆F508/D1270NϩR74W 7T/9T 3 (3) L383S/- 5T/7T 1 One CFTR mutation 4 (17)∆F508/R117H 7T/7T 1 ∆F508/P1021S 7T/9T 1 ∆F508/-a 7T/9T 1 3732delA/-a 7T/7T 1∆F508/M952T 7T/9T 1 ∆F508/D110Y 7T/9T 1 Q890R/- 7T/7T 1 -/-a 5T/7T 1∆F508/S50P 5T/9T 1 ∆F508/2751ϩ3A→G 5T/9T 1 Negative CFTR mutations 15 (62) -/- 7T/7T 10 (42)G542X/R117H 7T/9T 1 G542X/2789ϩ5G→A 7T/9T 1 -/- 7T/9T 3 (12) -/- 9T/9T 2 (8)R117H/2789ϩ5G→A 7T/7T 1 R117H/712-1G→T 7T/9T 1 R117H/∆I507 7T/7T 1 aThree carrier patients with renal agenesis. Login to comment
96 L206W/- 5T/9T 1 L206W/3121-1G→A 7T/9T 1 L206W/1949del84 7T/9T 1 transrectal ultrasonography was significantly smaller in∆E115/S50P 7T/7T 1 2869insG/R1070W 7T/7T 1 CBAVD than in CUAVD (F ϭ 8.1, P ϭ 0.005). Login to comment

PMID: 18306312 [PubMed] Gene GG et al: "N-terminal CFTR missense variants severely affect the behavior of the CFTR chloride channel."

No. Sentence Comment

116 Moreover, some nascent/immature CFTR protein present in the ER and A B 501 E92K Y89C G85E/V P5L S50P E60K R75Q NBD1 NBD2 R FIGURE 1. Login to comment
156 Confocal images from representative xy sections taken from1of 3 independent experiments show the subcellular distribution of wild-type CFTR (WT), p.F508del mutant (F508del), and variants p.S50P (S50P), p.E60K (E60K), p.G85E (G85E), p.G85V (G85V), p.E92K (E92K), p.P5L (P5L), p.R75Q (R75Q), and p.Y89C (Y89C). Login to comment
180 B: Recordings fromvariants p.S50P (S50P), p.E60K (E60K), p.G85E (G85E), p.G85V (G85V), and p.E92K (E92K) (superimposed recordings). Login to comment
3 By site-directed mutagenesis, we generated four CFTR variants in the N-terminal cytoplasmic tail (p.P5L, p.S50P, p.E60K, and p.R75Q) and four in the first transmembrane segment of membrane-spanning domain 1 (p.G85E/V, p.Y89C, and p.E92K). Login to comment
4 Immunoblot analysis revealed that p.S50P, p.E60K, p.G85E/V, and p.E92K produced only core-glycosylated proteins. Login to comment
40 The eight CFTR variants included in this study: p.P5L, p.S50P, p.E60 K, p.R75Q, p.G85E, p.G85V, p.Y89C, and p.E92K (Fig. 1A) were generated by oligonucleotide-directed mutagenesis in pCMVCFTRNot6.2wt using the QuickChangeTM XL-Site-Directed Mutagenesis Kit (Stratagene, La Jolla, CA) according to the manufacturer`s instructions (see Supplementary Table S1 for a detailed description of the mutagenesis primers employed; available online at http://www.interscience.wiley.com/jpages/1059-7794/supp mat). Login to comment
102 RESULTS Description and Cross-Species Analysis of Natural N-Terminus CFTR Variants We chose eight naturally occurring sequence variants, four located across the N-terminal CFTR tail (p.P5L, p.S50P, p.E60K, and p.R75Q), and four within the first segment of MSD1 (p.G85E, p.G85V, p.Y89C, and p.E92 K) (Fig. 1A; Table 1). Login to comment
110 In contrast, variants p.S50P, p.E60K, p.G85E, p.G85V, and p.E92K, produced only higher mobility band B proteins suggesting that, like the p.F508del mutant, the resulting misfolded channels are retained and degraded in the cytoplasm (Fig. 2A). Login to comment
118 B: Alignment of the N-terminus (amino acids 1 to 100) of the CFTR protein derived from di¡erent species.The sequences derived from human (Homo sapiens, Gen- BankNM_000492), mouse (Mus musculus,GenBankNM_021050), Norway rat (Rattusnovergicus,GenBankNM_031506), European rabbit (Oryctolagus cuniculus, GenBank NM_001082716), cow (Bos taurus, GenBank NM_174018), sheep (Ovis aries, GenBank NM_001009781), African clawed frog (Xenopus laevis, GenBank X65256), and spiny dog'sh (Squalus acanthias, GenBank M83785) were aligned using the ClustalW multiple sequence alignment program.The amino acid residue a¡ected by each of the variants analyzed (p.P5L, p.S50P, p.E60K, p.R75Q, p.G85E, p.G85V, p.Y89C, and p.E92K) is indicated in bold. Login to comment
122 Similarly, variants p.S50P, p.E60K, p.G85V, p.G85E, and p.E92K displayed a yellow colocalization pattern clearly compatible with retention of the anomalous CFTR proteins within the intracellular compartments and no detection of PM staining (Fig. 3). Login to comment
130 Likewise, none of the five variants (p.S50P, p.E60K, p.G85E, p.G85V, and p.E92K) in which severe misprocessing was previously demonstrated (Figs. 2 and 3), was able to generate cAMP-activated currents (Fig. 4B). Login to comment
133 Genotype^Phenotype Correlation in the N-Terminal CFTR MissenseVariants Under StudyÃ Missense varianta Phenotype Second allele (number of patients)b p.P5L CF p.F508del (1), p.P205S (1) p.S50P CBAVD p.F508del (1), p.E115del (1) p.E60K CF p.G542X (1), p.I507del (1) p.R75Q HT p.F508del (3), p.E725K (1) B p.R347H (1), p.R75Q (1), n.i. (4) Br c.1584G4A (2), c.1210-7_1210-6delTT (1), n.i.(3) NT p.F508del (1) CP c.1584G4A (1), n.i. (3) MI n.i. (1) CUAVD n.i. (2) OZ n.i. (2) Normal p.R75Q (1), c.2052_2053insA (1), n.i. (1) p.G85E CF p.F508del (8), p.G542X (2), p.I507del (1), c.580-1G4T (1), p.G85E (1), c.1477_ 1478delCA (1) CBAVD p.G576A (1) HT p.L997F (1),WT (1) p.G85V CF p.F508del (2), p.G542X (2), p.Y1092X (1), c.265715G4A (1), p.A1006E, c.1210-7_1210- 6delTT (1), n.i. (1) p.Y89C CF n.i. (1)c p.E92K CF p.F508del (2), p.Q890X (1), p.L206W (1) CBAVD c.1210-7_1210-6delTT (1) ÃThe recommendations for mutation nomenclature (www.hgvs.org/mutnomen/) were used to name CFTR gene sequence variations at both the nucleotide level and the protein level. Login to comment
138 The p.S50P variant was only found in CBAVD patients [Casals et al., 2000], whereas the p.R75Q variant was described as a neutral change (CFMDB) and reported later in several CFTR-related disorders such as obstructive azoospermia [Dork et al., 1997], bronchiectasis [Casals et al., 2004b], chronic pancreatitis [Casals et al., 2004a], hypertrypsinemia [Gartner et al., 2003], as well as in the general population [Bombieri et al., 2000]. Login to comment
213 Four of the variants (p.P5L, p.S50P, p.E60 K, and p.R75Q) are localized within the cytosolic N-terminal tail, and the remaining four (p.G85E, p.G85V, p.Y89C, and p.E92K) are embedded in three positions within the first transmembrane segment (TM1) of MSD1. Login to comment
215 Accordingly, using three different approaches (immunoblotting, immunocytochemistry, and electrophysiology) we found that 5 (p.S50P, p.E60K, p.G85E, p.G85V, and p.E92K) out of the 8 variants failed to mature, showing an analogous behavior than the most common F508del mutation. Login to comment
236 Thus, all these important interactions might be perturbed by the N-tail CFTR folding mutations p.S50P and p.E60K. Login to comment
237 In the former, proline residues, such as the introduced in the p.S50P mutation, are not favored, introducing ''kinks`` in a-helices because the backbone nitrogen is not available for hydrogen bonding and because of steric constraints caused by their ring structure [Richardson and Richardson, 1989]. Login to comment
245 Indeed, similarly to the above-referred cytosolic N-terminal CFTR variants p.S50P and p.E60K, folding and/or trafficking/processing defects seem to be the major factors contributing to the abnormal p.P5L CFTR phenotype, which showed a greatly reduced expression at the PM by immunodetection. Login to comment
257 The main exception is variant p.S50P, which, despite exhibiting absence of mature CFTR protein, was merely found in two CBAVD patients [Casals et al., 2000]. Login to comment

PMID: 19910674 [PubMed] Ramalho AS et al: "Deletion of CFTR translation start site reveals functional isoforms of the protein in CF patients."

No. Sentence Comment

172 Altogether, these results for c.120del23-CFTR suggest an important role of the N-terminus in CFTR folding, stability and processing, which was also evidenced by other studies demonstrating that point mutations in this region - S50P; E60K; G85E/V; E92K - prevent CFTR maturation [35, 36]. Login to comment

PMID: 17331079 [PubMed] Alonso MJ et al: "Spectrum of mutations in the CFTR gene in cystic fibrosis patients of Spanish ancestry."

No. Sentence Comment

52 Mutation 0.46-0.35 9 c.1078delT #, p.R347P # 8 p.G85V, c.621 + 1G > T #, p.S549R (T > G) #, p.R553X #, c.3849 + 10kbC > T # 7 p.R347H #, c.1812-1G > A, p.R709X 0.30-0.10 6 p.H199Y, p.P205S, 5 p.R117H #, p.G551D #, p.W1089X, p.Y1092X, CFTR50kbdel 4 c.296 + 3insT, c.1717-1G > A #, c.1949del84, c.3849 + 1G > A 3 p.E92K, c.936delTA, c.1717-8G > A, c.1341G > A, p.A561E, c.2603delT, p.G1244E, [p.D1270N; p.R74W] 2 p.Q2X, p.P5L, CFTRdele2,3, p.S50P, p.E60K, c.405 + 1G > A, c.1677delTA, p.L558S, p.G673X, p.R851X, p.Y1014C, p.Q1100P, p.M1101K, p.D1152H, CFTRdele19, p.G1244V, p.Q1281X, p.Y1381X <0,1 1 c.124del23bp, p.Q30X, p.W57X, c.406-1G > A, p.Q98R, p.E115del, c.519delT, p.L159S, c.711 + 3A > T, p.W202X, c.875 + 1G > A, p.E278del, p.W361R, c.1215delG, p.L365P, p.A399D, c.1548delG, p.K536X, p.R560G, c.1782delA, p.L571S, [p.G576A; p.R668C], p.T582R, p.E585X, c.1898 + 1G > A, c.1898 + 3A > G, c.2051delTT, p.E692X, p.R851L, c.2711delT, c.2751 + 3A > G, c.2752-26A > G, p.D924N, p.S945L, c.3121-1G > A, p.V1008D, p.L1065R, [p.R1070W; p.R668C], [p.F1074L; 5T], p.H1085R, p.R1158X, c.3659delC #, c.3667del4, c.3737delA, c.3860ins31, c.3905insT #, c.4005 + 1G > A, p.T1299I, p.E1308X, p.Q1313X, c.4095 + 2T > A, rearrangements study (n = 4) Mutations identified in CF families with mixed European origin: c.182delT, p.L1254X, c.4010del4. Login to comment
66 For example the IVS8-6(5T) allele was detected in cis with four different mutations (p.S50P, c.2751 + 3A > G, p.A1006E and p.F1074L). Login to comment

PMID: 25697318 [PubMed] Lay-Son R G et al: "[CFTR gene sequencing in a group of Chilean patients with cystic fibrosis]."

No. Sentence Comment

58 Mutaciones detectadas por secuenciaci&#f3;n masiva en cohorte de 39 pacientes chilenos con FQ portadores de un alelo desconocido Mutaci&#f3;n detectada (nomenclatura actual*) n de alelos Reporte en pacientes con FQ (no de alelos) Efecto Denominaci&#f3;n antigua c.1330_1331delAT 3 Argentina (1)a Prote&#ed;na truncada por generaci&#f3;n de cod&#f3;n de t&#e9;rmino 1460delAT c.314T>A 2 Francia (1)a Cambio de amino&#e1;cido Isoleucina por Asparagina I105N c.4046G>A 2 Italia (7)b,c , EEUU (1)d Cambio de amino&#e1;cido Glicina por Aspartato G1349D c.148T>C 2 Espa&#f1;a (2)e Cambio de amino&#e1;cido Serina por Prolina S50P c.695T>A 1 Espa&#f1;a (14)e,f , EEUU (hispanos) (5)g,h Francia (2)a , Brasil (1)i Cambio de amino&#e1;cido Valina por Aspartato V232D c.3266G>A 1 Espa&#f1;a (5)e , Brasil (2)i,j , EEUU (hispanos) (2)g , Argentina (1)k , Israel (1)l Prote&#ed;na truncada por generaci&#f3;n de cod&#f3;n de t&#e9;rmino W1089X c.1647T>G 1 Emiratos &#c1;rabes Unidos (> 30)m,n , Colombia (4)o , Israel (4)p , Argelia (2)p , Marruecos (2)q , Reino Unido (2)p , Portugal (1)p , Espa&#f1;a (1)p , Francia (1)p , Italia (1)p , Brasil (1)q , Argentina (1)q Cambio de amino&#e1;cido Serina por Arginina S549R(T- >G) c.308G>A 1 No descrita previamente Cambio de amino&#e1;cido Glicina por Glutamato G103E c.1680-1G>A 1 Espa&#f1;a (1)r Alteraci&#f3;n en splicing 1812-1G->A c.1679+1G>C 1 Francia (2)s Macedonia (1)s , Alteraci&#f3;n en splicing 1811+1G->C c.490-2A>G 1 Argentina (1)t Alteraci&#f3;n en splicing 622-2A->G FQ: Fibrosis qu&#ed;stica. Login to comment