Title : Tracking local conformational changes of ribonuclease A using picosecond time-resolved fluorescence of the six tyrosine residues.

Pub. Date : 2007 Jun 15

PMID : 17384067






4 Functional Relationships(s)
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1 Tracking local conformational changes of ribonuclease A using picosecond time-resolved fluorescence of the six tyrosine residues. Tyrosine ribonuclease A family member 1, pancreatic Homo sapiens
2 The six tyrosine residues of ribonuclease A (RNase A) are used as individual intrinsic probes for tracking local conformational changes during unfolding. Tyrosine ribonuclease A family member 1, pancreatic Homo sapiens
3 The six tyrosine residues of ribonuclease A (RNase A) are used as individual intrinsic probes for tracking local conformational changes during unfolding. Tyrosine ribonuclease A family member 1, pancreatic Homo sapiens
4 The fluorescence decays of RNase A are well described by sums of three exponentials with decay times (tau(1) = 1.7 ns, tau(2) = 180 ps, and tau(3) = 30 ps) and preexponential coefficients (A(1) = 1, A(2) = 1, and A(3) = 4) at pH 7, 25 degrees C. The decay times are controlled by photo-induced electron transfer from individual tyrosine residues to the nearest disulphide (-SS-), bridge, which is distance (R) dependent. Tyrosine ribonuclease A family member 1, pancreatic Homo sapiens