ABCA4 p.Cys1502Arg
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PMID: 24097981
[PubMed]
Quazi F et al: "Differential phospholipid substrates and directional transport by ATP-binding cassette proteins ABCA1, ABCA7, and ABCA4 and disease-causing mutants."
No.
Sentence
Comment
65
Mutations introduced by overlap extension PCR using Pfu AD DNA polymerase in ABCA1 included S100C, W590S, F593L, N935S, T929I, C1477R, T1512M, R2081W, and P2150L.
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ABCA4 p.Cys1502Arg 24097981:65:120
status: NEW66 Corresponding ABCA4 mutations determined by amino acid alignment with ABCA1 included S100P, W605S, F608L, T959I, N965S, C1502R, T1537M, R2107P, and P2180L.
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ABCA4 p.Cys1502Arg 24097981:66:120
status: NEW223 Finally, the null mutant C1502X associated with Stargardt disease was modified to C1502R to reflect the primary sequence change of the corresponding C1477R mutant in ABCA1 linked to Tangier disease.
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ABCA4 p.Cys1502Arg 24097981:223:82
status: NEW226 The levels of expression of the ABCA1 and ABCA4 mutants were generally lower than the corresponding WT proteins with the ABCA1 mutants S100C and R2081W and the corresponding ABCA4 mutants S100P and R2107P expressing at levels less than 25% of WT and the remaining mutants expressing in the range of 35-90% of the WT proteins.
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ABCA4 p.Cys1502Arg 24097981:226:82
status: NEW232 ABCA4 variants showed a similar ATPase activity profile as the ABCA1 mutants with the exception of the T1537M mutation of ABCA4, which was significantly lower than the corresponding T1512M mutant in ABCA1.
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ABCA4 p.Cys1502Arg 24097981:232:234
status: NEW234 As shown in Fig. 8, A and B, the Fl-PC flippase activity of the ABCA1 mutants and the Fl-PE flippase activity of ABCA4 mutants have a similar profile with the ABCA1 variants C1477R, T1512M, and P2150L and corresponding ABCA4 variants C1502R, T1537M, and P2180L showing transport activities ranging from 60 to 80% of the WT protein and the other mutants showing reduced activity in the range of 20-40% of the WT protein.
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ABCA4 p.Cys1502Arg 24097981:234:234
status: NEW295 The ABCA1/ABCA4 mutants in the ECD1 (S100C/S100P, W590S/ W605S, and F593L/F608L) displayed the lowest activities (20-30% WT), whereas those in the ECD2 (C1477R/C1502R and T1512M/T1537M) and the P2150L/P2180L mutants in the C terminus showed the highest activities (60-100% WT).
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ABCA4 p.Cys1502Arg 24097981:295:160
status: NEW68 Corresponding ABCA4 mutations determined by amino acid alignment with ABCA1 included S100P, W605S, F608L, T959I, N965S, C1502R, T1537M, R2107P, and P2180L.
X
ABCA4 p.Cys1502Arg 24097981:68:120
status: NEW237 As shown in Fig. 8, A and B, the Fl-PC flippase activity of the ABCA1 mutants and the Fl-PE flippase activity of ABCA4 mutants have a similar profile with the ABCA1 variants C1477R, T1512M, and P2150L and corresponding ABCA4 variants C1502R, T1537M, and P2180L showing transport activities ranging from 60 to 80% of the WT protein and the other mutants showing reduced activity in the range of 20-40% of the WT protein.
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ABCA4 p.Cys1502Arg 24097981:237:234
status: NEW298 The ABCA1/ABCA4 mutants in the ECD1 (S100C/S100P, W590S/ W605S, and F593L/F608L) displayed the lowest activities (20-30% WT), whereas those in the ECD2 (C1477R/C1502R and T1512M/T1537M) and the P2150L/P2180L mutants in the C terminus showed the highest activities (60-100% WT).
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ABCA4 p.Cys1502Arg 24097981:298:160
status: NEW221 Finally, the null mutant C1502X associated with Stargardt disease was modified to C1502R to reflect the primary sequence change of the corresponding C1477R mutant in ABCA1 linked to Tangier disease.
X
ABCA4 p.Cys1502Arg 24097981:221:82
status: NEW293 The ABCA1/ABCA4 mutants in the ECD1 (S100C/S100P, W590S/ W605S, and F593L/F608L) displayed the lowest activities (2030% WT), whereas those in the ECD2 (C1477R/C1502R and T1512M/T1537M) and the P2150L/P2180L mutants in the C terminus showed the highest activities (60-100% WT).
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ABCA4 p.Cys1502Arg 24097981:293:159
status: NEW