No Proline-Isomerization in Src-SH3
There is no indication of a proline isomerization-limited refolding phase(ie. slow fluorescence phase) in Src-SH3.

This is may be due to that it is simply the result of an unusually small cis-trans ratio, 4+-2%, is substantially smaller than the 10-33% ratio previously reported for small peptides and unfolded proteins.
In our case...