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TLS Online TPP Program

#Id: 4465

Cryoelectron microscopy allows examination of hydrated, unfixed, and unstained specimens in the TEM by maintaining them at -196oC (liquid nitrogen).


#Unit 13. Methods in Biology #Electron Microscopy #Part B Pointers
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TLS Online TPP Program

#Id: 8490

#Unit 1. Molecules and their Interaction Relevant to Biology

The coplanar relationship of the atoms in the amide group is highlighted as an imaginary
shaded plane lying between two successive a-carbon atoms in the peptide backbone.
TLS Online TPP Program

#Id: 8491

#Unit 1. Molecules and their Interaction Relevant to Biology

The peptide bond is estimated to have 40% double bond character
TLS Online TPP Program

#Id: 8492

#Unit 1. Molecules and their Interaction Relevant to Biology
TLS Online TPP Program

#Id: 8493

#Unit 1. Molecules and their Interaction Relevant to Biology
TLS Online TPP Program

#Id: 8495

#Unit 1. Molecules and their Interaction Relevant to Biology

When Psi is fixed at +165º. Clashes occur at all Phi angles except -70º to -170º. This range is in the beta strand region
TLS Online TPP Program

#Id: 8496

#Unit 1. Molecules and their Interaction Relevant to Biology

When Phi is fixed at -80º. Clashes occur at all Psi angles except:
+10 to -55º (alpha helix)
+90 to 180 (beta strand