ABCC9 p.Ser528Ala
| Predicted by SNAP2: | A: N (82%), C: N (87%), D: N (82%), E: N (87%), F: N (72%), G: N (87%), H: N (93%), I: N (78%), K: N (93%), L: N (82%), M: N (87%), N: N (93%), P: N (72%), Q: N (93%), R: N (87%), T: N (93%), V: N (82%), W: D (53%), Y: N (82%), |
| Predicted by PROVEAN: | A: N, C: D, D: N, E: N, F: D, G: D, H: D, I: D, K: N, L: D, M: N, N: N, P: D, Q: N, R: N, T: N, V: D, 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
231 S528A and S1173A each reduced ATPase activity by 26%, and showed generally symmetrical effects on function, consistent with equivalent mechanistic roles of the two nucleotide sites.
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ABCC9 p.Ser528Ala 16442101:231:0
status: NEW