Could Proteins Be Quantum Objects?

Could Proteins Be Quantum Objects?

February 23, 2017

Address

727 E. Tyler St.
Tempe, AZ 85287

Location

Biodesign Institute Auditorium

Date and Time

February 27, 2017, 3:00 pm (Length: 1 hour 0 minutes)

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Stuart Lindsay, Ph.D., Director, Biodesign Center for Single Molecule Biophysics

Chemical bonds are quantum objects and remain so at room temperature because they are strong enough to resist thermal fluctuations. But does quantum mechanics reach further than individual bonds? There has been a long history of physicists proposing roles for one of their cleverest inventions (quantum mechanics) in biology, but almost all the evidence to date indicates that thermal motion ruins quantum coherence. Recent evidence from coherent optical excitation of antenna complexes from green sulfur bacteria suggests that coherent quantum states span the whole (large) molecule. We are making electrical measurements on big proteins, finding evidence of a surprisingly large electrical conductance.

This Coffee @ Beyond Seminar is presented by the ASU Beyond Center. Coffee will be served.