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. 1987 Nov;52(5):885–889. doi: 10.1016/S0006-3495(87)83282-4

Photodissociation of CO and O2 from alpha and beta hemoglobin chains studied by using picosecond absorption spectroscopy.

C R Guest 1, L J Noe 1
PMCID: PMC1330192  PMID: 3427192

Abstract

The picosecond photodissociation of the CO and O2 forms of alpha and beta chains of hemoglobin were studied by following pi pi Soret absorption changes using a Nd3+ phosphate-glass laser, 531-nm pump pulse, 8 ps full width half maximum, and a pump-probe double-beam absorption apparatus. Three intermediates were observed within the first 50 ps after photon absorption. The most notable differences between the two monomers are the extent and rate of geminate recombination with the two ligands. We attribute this result to differences between the tertiary protein structure of the alpha and beta forms of Hb, both distal and proximal.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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