Structural basis for the root effect in haemoglobin.
Mylvaganam, S.E., Bonaventura, C., Bonaventura, J., Getzoff, E.D.(1996) Nat.Struct.Mol.Biol. 3: 275-283
- PubMed: 8605630 
- PubMed Abstract: 
The remarkable ability of root effect haemoglobins to pump oxygen against high O2 gradients results from extreme, acid-induced reductions in O2 affinity and cooperativity. The long-sought mechanism for the root effect, revealed by the 2 angstrom crys ...