ABCC7 p.Cys343Ala
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PMID: 21796426
[PubMed]
Holstead RG et al: "Functional Differences in Pore Properties Between Wild-Type and Cysteine-Less Forms of the CFTR Chloride Channel."
No.
Sentence
Comment
67
As shown in Fig. 3, single-channel conductance was significantly reduced in C343L, significantly increased in C343A as well as C343S and not significantly changed in C343T and C343V.
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ABCC7 p.Cys343Ala 21796426:67:110
status: NEW87 b Mean single channel I-V relationships recorded under these conditions for C343A (filled circle) and C343L (open circle).
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ABCC7 p.Cys343Ala 21796426:87:76
status: NEW
PMID: 22160394
[PubMed]
Cui G et al: "Differential contribution of TM6 and TM12 to the pore of CFTR identified by three sulfonylurea-based blockers."
No.
Sentence
Comment
151
The surprising finding that mutations at six adjacent positions Q353A R352A T351A V350A A349S M348A R347A L346A V345A I344A C343A F342A S341A I340A T339A T338A F337A I336A K335A R334A WT ** ** ** ** ** ** * * * 0.8 0.6 0.4 0.2 0 Fractional block by Glyb50 μM Q353A R352A T351A V350A A349S M348A R347A L346A V345A I344A C343A F342A S341A I340A T339A T338A F337A I336A K335A R334A WT ** ** ** ** ** ** ** ** * * * * * * ** ** Fractional block by Tolb300 μM 0.8 0.6 0.4 0.2 0 Q353A R352A T351A V350A A349S M348A R347A L346A V345A I344A C343A F342A S341A I340A T339A T338A F337A I336A K335A R334A WT * ** ** ** ** ** ** ** ** Fractional block by Glip200 μM 0.8 0.6 0.4 0.2 0 Fig. 3 Alanine-scanning in TM6 to identify the amino acids that interact with the three blockers.
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ABCC7 p.Cys343Ala 22160394:151:124
status: NEWX
ABCC7 p.Cys343Ala 22160394:151:325
status: NEWX
ABCC7 p.Cys343Ala 22160394:151:545
status: NEW166 Double asterisks indicate significantly different compared to WT-CFTR (p<0.01) Q353A R352A T351A V350A A349S M348A R347A L346A V345A I344A C343A F342A S341A I340A T339A T338A F337A I336A K335A R334A WT 0.3 0.2 0.1 0 * * ** ** 0.4 Initial block by 50 μM Glyb Q353A R352A T351A V350A A349S M348A R347A L346A V345A I344A C343A F342A S341A I340A T339A T338A F337A I336A K335A R334A WT 0.4 0.3 0.2 0.1 0 ** ** * Initial block by 200 μM Glip Fig. 5 Initial block of WT-CFTR and selected TM6 mutants by 50 μM Glyb (left) and 200 μM Glip (right) in symmetrical 150 mM Cl- solution. Data are shown only for those mutants which exhibited significant changes in steady-state fractional block according to Fig. 3 (bars show mean±SEM, n=5-10).
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ABCC7 p.Cys343Ala 22160394:166:139
status: NEWX
ABCC7 p.Cys343Ala 22160394:166:324
status: NEW193 Probable orientation of drugs in the pore Glyb and Glip are identical molecules along most of their lengths, differing only in the substituents on the ring at the Q353A R352A T351A V350A A349S M348A R347A L346A V345A I344A C343A F342A S341A I340A T339A T338A F337A I336A K335A R334A WT 0.8 0.6 0.2 0 ** ** ** ** Time-dependent block by 50 μμM Glyb Q353A R352A T351A V350A A349S M348A R347A L346A V345A I344A C343A F342A S341A I340A T339A T338A F337A I336A K335A R334A WT ** ** * ** * Time-dependent block by 200 μM Glip 0.4 0.8 0.6 0.2 00.4 Fig. 6 Time-dependent block of WT-CFTR and selected TM6 mutants by 50 μM Glyb (left) and 200 μM Glip (right) in symmetrical 150 mM Cl- solution. Data are shown only for those mutants which exhibited significant changes in fractional block according to Fig. 3 (bars show mean±SEM, n=5-10).
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ABCC7 p.Cys343Ala 22160394:193:223
status: NEWX
ABCC7 p.Cys343Ala 22160394:193:420
status: NEW