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. 1977 Oct;74(10):4139–4143. doi: 10.1073/pnas.74.10.4139

Picosecond dynamics of iron proteins

D Huppert 1, K D Straub 1,*, P M Rentzepis 1
PMCID: PMC431891  PMID: 16592438

Abstract

The excitation of hemoproteins containing either Fe2+ or Fe3+ with a picosecond light pulse resulted in the bleaching and recovery of the iron absorbance bands within 6 psec. A new absorbance band also was observed whose formation and decay rate of less than 6 psec suggests that it is probably due to S1→Sn absorbance. The Soret band relaxation time is deduced to be ∼0.5 psec whereas the free base hemoprotein does not show any of the above fast-decay characteristics. Therefore, there is a strong influence of the metal on the energy dissipation process.

Keywords: picosecond spectroscopy, cytochromes, porphyrins

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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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