ABCC7 p.Ile601Phe
| ClinVar: |
c.1801A>T
,
p.Ile601Phe
?
, not provided
c.1802T>C , p.Ile601Thr ? , not provided |
| CF databases: |
c.1801A>G
,
p.Ile601Val
(CFTR1)
?
,
c.1801A>T , p.Ile601Phe (CFTR1) ? , The above mutation was detected by SSCP/heteroduplex analysis and identified by direct DNA sequencing. I601F was seen only once in over 100 non-[delta]F508 CF chromosomes screened. The patient , who was referred by West Midlands Regional Genetics Service, is heterozygous for the G542X mutation. |
| Predicted by SNAP2: | A: D (95%), C: D (91%), D: D (95%), E: D (95%), F: N (66%), G: D (95%), H: D (95%), K: D (95%), L: D (80%), M: D (91%), N: D (95%), P: D (95%), Q: D (95%), R: D (95%), S: D (95%), T: D (95%), V: D (71%), W: D (95%), Y: D (95%), |
| Predicted by PROVEAN: | A: D, C: D, D: D, E: D, F: D, G: D, H: D, K: D, L: N, M: N, N: D, P: D, Q: D, R: D, S: D, T: D, V: N, W: D, Y: D, |
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[hide] Insight in eukaryotic ABC transporter function by ... FEBS Lett. 2006 Feb 13;580(4):1064-84. Epub 2006 Jan 19. Frelet A, Klein M
Insight in eukaryotic ABC transporter function by mutation analysis.
FEBS Lett. 2006 Feb 13;580(4):1064-84. Epub 2006 Jan 19., 2006-02-13 [PMID:16442101]
Abstract [show]
With regard to structure-function relations of ATP-binding cassette (ABC) transporters several intriguing questions are in the spotlight of active research: Why do functional ABC transporters possess two ATP binding and hydrolysis domains together with two ABC signatures and to what extent are the individual nucleotide-binding domains independent or interacting? Where is the substrate-binding site and how is ATP hydrolysis functionally coupled to the transport process itself? Although much progress has been made in the elucidation of the three-dimensional structures of ABC transporters in the last years by several crystallographic studies including novel models for the nucleotide hydrolysis and translocation catalysis, site-directed mutagenesis as well as the identification of natural mutations is still a major tool to evaluate effects of individual amino acids on the overall function of ABC transporters. Apart from alterations in characteristic sequence such as Walker A, Walker B and the ABC signature other parts of ABC proteins were subject to detailed mutagenesis studies including the substrate-binding site or the regulatory domain of CFTR. In this review, we will give a detailed overview of the mutation analysis reported for selected ABC transporters of the ABCB and ABCC subfamilies, namely HsCFTR/ABCC7, HsSUR/ABCC8,9, HsMRP1/ABCC1, HsMRP2/ABCC2, ScYCF1 and P-glycoprotein (Pgp)/MDR1/ABCB1 and their effects on the function of each protein.
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No. Sentence Comment
295 I601F, L610S, A613T, D614G, I618T, L619S, H620P, G628R and L633P resulted in aberrant processing.
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ABCC7 p.Ile601Phe 16442101:295:0
status: NEW[hide] Characterization of 19 disease-associated missense... Hum Mol Genet. 1998 Oct;7(11):1761-9. Vankeerberghen A, Wei L, Jaspers M, Cassiman JJ, Nilius B, Cuppens H
Characterization of 19 disease-associated missense mutations in the regulatory domain of the cystic fibrosis transmembrane conductance regulator.
Hum Mol Genet. 1998 Oct;7(11):1761-9., [PMID:9736778]
Abstract [show]
In order to gain a better insight into the structure and function of the regulatory domain (RD) of the cystic fibrosis transmembrane conductance regulator (CFTR) protein, 19 RD missense mutations that had been identified in patients were functionally characterized. Nine of these (I601F, L610S, A613T, D614G, I618T, L619S, H620P, G628R and L633P) resulted in aberrant processing. No or a very small number of functional CFTR proteins will therefore appear at the cell membrane in cells expressing these mutants. These mutations were clustered in the N-terminal part of the RD, suggesting that this subdomain has a folding pattern that is very sensitive to amino acid changes. Mutations that caused no aberrant processing were further characterized at the electrophysiological level. First, they were studied at the whole cell level in Xenopus laevis oocytes. Mutants that induced a whole cell current that was significantly different from wild-type CFTR were subsequently analysed at the single channel level in COS1 cells transiently expressing the different mutant and wild-type proteins. Three mutant chloride channels, G622D, R792G and E822K CFTR, were characterized by significantly lower intrinsic chloride channel activities compared with wild-type CFTR. Two mutations, H620Q and A800G, resulted in increased intrinsic chloride transport activities. Finally, T665S and E826K CFTR had single channel properties not significantly different from wild-type CFTR.
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No. Sentence Comment
1 Nine of these (I601F, L610S, A613T, D614G, I618T, L619S, H620P, G628R and L633P) resulted in aberrant processing.
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ABCC7 p.Ile601Phe 9736778:1:15
status: NEW66 The mutations that gave rise to a protein that was not able to proceed to the 190 kDa form (I601F, L610S, A613T, D614G, I618T, L619S, H620P, G628R and L633P; Table 2) are therefore class two mutations (17), where the disease phenotype is caused by the absence of sufficient CFTR protein at the cell surface.
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ABCC7 p.Ile601Phe 9736778:66:92
status: NEW68 Primers used for mutagenesis Primer Sequence I601F (a1933t) 5'-CTA ACA AAA CTA GGT TTT TGG TCA CTT C-3' L610S (t1961c) 5'-CTA AAA TGG AAC ATT CAA AGA AAG CTG-3' A613T (g1969a) 5'-CAT TTA AAG AAA ACT GAC AAA ATA TTA-3' D614G (a1973g) 5'-CAT TTA AAG AAA GCT GGC AAA ATA TTA A-3' I618T (t1985c) 5'-GAC AAA ATA TTA ACT TTG CAT GAA GG-3' L619S (t1988c) 5'-GAC AAA ATA TTA ATT TCG CAT GAA GGT-3' H620P (a1991c) 5'-CAA AAT ATT AAT TTT GCC TGA AGG TAG C-3' H620Q (t1992g) 5'-AAT ATT AAT TTT GCA GGA AGG TAG CAG-3' G622D (g1997a) 5'-TTG CAT GAA GAT AGC AGC TAT TTT TAT G-3' G628R (g2014c) 5'-GCA GCT ATT TTT ATC GGA CAT TTT C-3' L633P (t2030c) 5'-CAT TTT CAG AAC CCC AAA ATC TAC AGC-3' D648V (a2075t) 5'-CTC ATG GGA TGT GTT TCT TTC GAC C-3' T665S (a2125t) 5'-CAA TCC TAA CTG AGT CCT TAC ACC G-3' F693L (t2209c) 5'-CAG ACT GGA GAG CTT GGG GAA AAA AG-3' R766M (g2429t) 5'-GCA CGA AGG ATG CAG TCT GTC CTG-3' R792G (c2506g) 5'-CAG CAT CCA CAG GAA AAG TGT CAC TG-3' A800G (c2531g) 5'-CTG GCC CCT CAG GGA AAC TTG ACT G-3' I807M (a2553g) 5'-CTG AAC TGG ATA TGT ATT CAA GAA GG-3' E822K (g2596a) 5'-GGC TTG GAA ATA AGT AAA GAA ATT AAC G-3' E826K (g2608a) 5'-GAA GAA ATT AAC AAA GAA GAC TTA AAG-3' Selection primer BstBI 5'-CTC TGG GGT CCG GAA TGA CCG AC-3' Two primers were used for each mutagenesis reaction.
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ABCC7 p.Ile601Phe 9736778:68:45
status: NEW77 Mutations detected in patients (I601F, L610S, A613T, D614G, I618T, L619S, H620P, H620Q, D622G, G628R, L633P, T665S, F693L, K698R, V754M, R766M, R792G, A800G, I807M, E822K and E826K) are indicated in bold and underlined, the PKA phosphorylation sites by an arrow and the two acidic domains are boxed.
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ABCC7 p.Ile601Phe 9736778:77:32
status: NEW87 Maturation pattern of RD mutations and their associated phenotype found in patients with the indicated genotype (when the mutation is associated with CF, only the pancreas status is given) Mutation A-form B-form C-form Clinical data Genotype Phenotype Reference I601F + + - I601F/G542X PS M. Schwarz, personal communication L610S + + - Unknown Unknown A613T + + - Unknown Unknown D614G + + - D614G/unknown PI 14 I618T + + - I618T/dF508 PS G.R. Cutting, personal communication L619S + + - L619S/unknown PI B. Tümmler, personal communication H620P + + - H620P/R1158X PS M. Schwarz, personal communication H620Q + + + H620Q/dF508 PI T. Dörk, personal communication G622D + + + G622D/unknown Oligospermia J. Zielenski, personal communication G628R + + - Unknown Unknown L633P + + - L633P/3659delC M. Schwarz, personal communication D648V + + + D648V/3849+10kb C/T PI C. Ferec, personal communication T665S + + + Unknown Unknown F693L + + + F693L/W1282X Healthy C. Ferec; CF Genetic Analysis Consortium R766M + + + R766M/R792G CBAVD D. Glavac, personal communication R792G + + + R766M/R792G CBAVD D. Glavac, personal communication A800G + + + A800G/unknown CBAVD 34 I807M + + + I807M/unknown CBAVD Our observation E822K + + + E822K/unknown PI 35 E826K + + + E826K/unknown Thoracic sarcoidosis C. Bombieri, personal communication +, the protein matures up to that form; -, the protein does not reach the respective maturation step.
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ABCC7 p.Ile601Phe 9736778:87:262
status: NEWX
ABCC7 p.Ile601Phe 9736778:87:274
status: NEW109 Nine mutations caused aberrant processing: I601F, L610S, A613T, D614G, I618T, L619S, H620P, G628R and L633P.
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ABCC7 p.Ile601Phe 9736778:109:43
status: NEW[hide] Validation of high-resolution DNA melting analysis... J Mol Diagn. 2008 Sep;10(5):424-34. Epub 2008 Aug 7. Audrezet MP, Dabricot A, Le Marechal C, Ferec C
Validation of high-resolution DNA melting analysis for mutation scanning of the cystic fibrosis transmembrane conductance regulator (CFTR) gene.
J Mol Diagn. 2008 Sep;10(5):424-34. Epub 2008 Aug 7., [PMID:18687795]
Abstract [show]
High-resolution melting analysis of polymerase chain reaction products for mutation scanning, which began in the early 2000s, is based on monitoring of the fluorescence released during the melting of double-stranded DNA labeled with specifically developed saturation dye, such as LC-Green. We report here the validation of this method to scan 98% of the coding sequence of the cystic fibrosis transmembrane conductance regulator (CFTR) gene. We designed 32 pairs of primers to amplify and analyze the 27 exons of the gene. Thanks to the addition of a small GC-clamp at the 5' ends of the primers, one single melting domain and one identical annealing temperature were obtained to co-amplify all of the fragments. A total of 307 DNA samples, extracted by the salt precipitation method, carrying 221 mutations and 21 polymorphisms, plus 20 control samples free from variations (confirmed by denaturing high-performance liquid chromatography analysis), was used. With the conditions described in this study, 100% of samples that carry heterozygous mutations and 60% of those with homozygous mutations were identified. The study of a cohort of 136 idiopathic chronic pancreatitis patients enabled us to prospectively evaluate this technique. Thus, high-resolution melting analysis is a robust and sensitive single-tube technique for screening mutations in a gene and promises to become the gold standard over denaturing high-performance liquid chromatography, particularly for highly mutated genes such as CFTR, and appears suitable for use in reference diagnostic laboratories.
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No. Sentence Comment
51 Sequences of the Primers Used for CFTR Analysis by HRM, GC Size, Amplicon Length, Number of Positive Controls Validated for Each Exon, and Positive Controls for Routine Analysis Exon Primer Sequences GC length Amplicon length (bp) Introns Number of heterozygous- positive controls Number of homozygous- positive controls Recommended control 1 LSCFE1Fmod 5Ј-CCGCCGCCGTTGAGCGGCAGGCACC-3Ј 8 200 bp 74 4 125GϾC LSCFE1Rmod 5Ј-CCGCCGCCGGCACGTGTCTTT CCGAAGCT-3Ј 8 19 M1I 2 2i5b 5Ј-CAAATCTGTATGGAGACC-3Ј 0 194 bp 39 5 R31C 2i3Љ 5Ј-CAACTAAACAATGTACATGAAC-3Ј 0 4 296ϩ1GϾT 3 LSCFe3Fmod LSCFe3Rmod 5Ј-CGCCGTTAAGGGAAATAGGACAA CTAAAATA-3Ј 5 276 bp 44 10 2 R75Q 5Ј-CCGCCGATTCACCAGATTTCGTAGTC-3Ј 6 66 G85V 4 LSCFe4FmodC 5Ј-CCGCCGCCGCCCGTGTTGAAATT CTCAGGGT-3Ј 12 361 bp 52 14 1 R117H LSCFe4RmodC 5Ј-CCGCCGCCCACATGTACGATAC AGAATATATGTGCC-3Ј 9 26 574delA 5 LSCFE5Fmod 5Ј-CCGCCGGTTGAAATTATCTAACTTTCC-3Ј 6 201 bp 13 8 624delT LSCFE5Rmod 5Ј-CCGAACTCCGCCTTTCCAGTTGT-3Ј 3 48 711ϩ1GϾT 6a LSCF6aFmod2 5Ј-CCGCCGGGGTGGAAGAT ACAATGACACCTG-3Ј 5 317 bp 25 8 C225X LSCF6aRmod2 5Ј-CCGCCGCCGCGATGCATAGAG CAGTCCTGGTT-3Ј 11 66 L206W 6b LSCFE6bFmod 5Ј-CGCGCCGCCGGATTTAC AGAGATCAGAGAG-3Ј 10 239 bp 0 2 1 R258G LSCFE6Brmod 5Ј-CCGCCGCCGAGGTGGA GTCTACCATGA-3Ј 8 66 1001ϩ11CϾT 7 LSCFE7Fmod2 5Ј-CCGCCGCCCTCTCCCTGAATTT TATTGTTATTGTTT-3Ј 13 326 bp 7 11 1078delT LSCFE7Rmod2 5Ј-CCCGCCGCCCTATAATGCAG CATTATGGT-3Ј 10 7 1248ϩ1GϾT 8 LSCFE8Fmod 5Ј-CCGGAATGCATTAATGCTAT TCTGATTC-3Ј 4 199 bp 32 7 W401X LSCFE8Rmod 5Ј-CCCGCAGTTAGGTGTTTAG AGCAAACAA-3Ј 4 18 1249-5AϾG 9 LSCFe9Fmod2 5Ј-CCGCCGCCGGGAATTATTTGAGAA AGCAAAACA-3Ј 8 279 bp 0 3 D443Y LSCFe9Rmod2 5Ј-CCGCCGCGAAAATACCTTCCAG CACTACAAACTAGAAA-3Ј 8 57 A455E 10 LSCF10FmodD 5Ј-CGCCGTTATGGGAGAACTGG AGCCTTCAGAG-3Ј 5 275 bp 0 15 1 F508del LSCF10RmodD 5Ј-CCGCAGACTAACCGATTGAAT ATGGAGCC-3Ј 4 68 E528E 11 h11i5 5Ј-TGCCTTTCAAATTCAGATTGAGC-3Ј 0 197 bp 42 13 2 G542X 11i3ter 5Ј-ACAGCAAATGCTTGCTAGACC-3Ј 0 17 G551D 12 LSCFE12Fmod 5Ј-CGCGTCATCTACACTAGATGACCAG-3Ј 4 244 bp 43 15 G576A 1898 ϩ 1GϾALSCFE12Rmod 5Ј-CCGGAGGTAAAATGCAATCTATGATG-3Ј 3 63 13 LSCF13AFmod 5Ј-CCGCCGCCGGAGACATATTG CAATAAAGTAT-3Ј 9 38 20 I601F LSCF13ARmod 5Ј-GCCTGTCCAGGAGACAGGA GCATCTC-3Ј 2 R668C LSCF13BFmod 5Ј-CCGCCGCAATCCTAACTGAG ACCTTACACCG-3Ј 2 R668C LSCF13BRmod 5Ј-CCGCCGATCAGGTTCAGGA CAGACTGC-3Ј 3 346 bp 2184insA LSCF13CFmod 5Ј-CCGCGGTGATCAGCACTGGCCC-3Ј 6 301 bp 77 L749L LSCF13CRmod 5Ј-CCGCGCGCGCGGCCAGTTTCTTG AGATAACCTTCT-3Ј 13 259 bp V754M LSCF13DFmod 5Ј-CGTGTCACTGGCCCCTCAGGC-3Ј 1 221 bp I807M LSCF13DRmof 5Ј-CCGCCGCCGCTAATCCTATGA TTTTAGTAAAT-3Ј 9 220 bp 2622ϩ1GϾA LSCf13FFmod 5Ј-CGCGGTGCAGAAAGAAGAAAT TCAATCCTAACTG-3Ј 4 R668C LSCF13FRmod 5Ј-CCGCCGTGCCATTCATTTGT AAGGGAGTCT-3Ј 6 2184insA 14a LSCF14aFmodB 5Ј-CCGACCACAATGGTGGCAT GAAACTG-3Ј 3 239 bp 35 7 1 T854T LSCF14aRmodB 5Ј-CCGCCGACTTTAAATCCAGTAAT ACTTTACAATAGAACA-3Ј 6 7 W846X 14b LSCF14bFmod 5Ј-CCGGAGGAATAGGTGAAGAT-3Ј 2 179 bp 38 4 2752-5GϾT LSCF14bRmodb 5Ј-CCGTACATACAAACATAGTGGATT-3Ј 3 59 2789ϩ5GϾT 15 LSCFE15Fmod 5Ј-CGCGCCGTGTATTGGAAA TTCAGTAAGTAACTTTGG-3Ј 7 412 bp 33 16 T908S LSCFE15Rmod 5Ј-CCGCAGCCAGCACTGCCAT TAGAAA-3Ј 4 68 S945L (table continues) phisms that we have chosen to exclude.
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ABCC7 p.Ile601Phe 18687795:51:2495
status: NEW[hide] Definition of a "functional R domain" of the cysti... Mol Genet Metab. 2000 Sep-Oct;71(1-2):245-9. Chen JM, Scotet V, Ferec C
Definition of a "functional R domain" of the cystic fibrosis transmembrane conductance regulator.
Mol Genet Metab. 2000 Sep-Oct;71(1-2):245-9., [PMID:11001817]
Abstract [show]
The R domain of the cystic fibrosis transmembrane conductance regulator (CFTR) was originally defined as 241 amino acids, encoded by exon 13. Such exon/intron boundaries provide a convenient way to define the R domain, but do not necessarily reflect the corresponding functional domain within CFTR. A two-domain model was later proposed based on a comparison of the R-domain sequences from 10 species. While RD1, the N-terminal third of the R domain is highly conserved, RD2, the large central region of the R domain has less rigid structural requirements. Although this two-domain model was given strong support by recent functional analysis data, the simple observation that two of the four main phosphorylation sites are excluded from RD2 clearly indicates that RD2 still does not satisfy the requirements of a "functional R domain." Nevertheless, knowledge of the CFTR structure and function accumulated over the past decade and reevaluated in the context of a comprehensive sequence comparison of 15 CFTR homologues made it possible to define such a "functional R domain," i.e., amino acids C647 to D836. This definition is validated primarily because it contains all of the important potential consensus phosphorylation sequences. In addition, it includes the highly charged motif from E822 to D836. Finally, it includes all of the deletions/insertions in this region. This definition also aids in understanding the effects of missense mutations occurring within this domain.
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No. Sentence Comment
30 Second, while I601F, L610S, A613T, D614G, I618T, L619S, H620P, G628R, and L633P resulted in aberrant processing, neither D648V or T665S caused an arrest in protein maturation (8).
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ABCC7 p.Ile601Phe 11001817:30:14
status: NEW