An Interactive Exercise about the Structure of the Epsilon Subunit of the E. coli ATP Synthase

Examine each of the 14 pages and answer all of the questions that appear in the side bars. The interactive molecules employ Jmol.

Domain Structure Page 1
Hydrogen Bonds Page 2
Hydrogen Bonding in an Alpha-Helix Page 3
Hydrogen Bonding in a Beta-Hairpin Page 4
Faces of a Beta-Sheet Page 5
Multi-centered H-Bond Page 6
The Two Beta-Sheets Page 7
Methionines Page 8
Charged Amino Acids: Ion Pairs Page 9
Glycines Page 10
Prolines Page 11
Valine, Isoleucine & Leucine Page 12
Phenylalanines Page 13
Tyrosines Page 14

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1aqt (PDB)

Uhlin, U., Cox, G. B., Guss, J. M.: Crystal structure of the epsilon subunit of the proton-translocating ATP synthase from Escherichia coli. Structure 5 pp. 1219 (1997) (PubMed)