A. Kufelnicki et M. Swiatek, UPTAKE OF MOLECULAR-OXYGEN BY CO(II) CHELATES WITH PEPTIDES IN AQUEOUS-SOLUTIONS .8. DIPEPTIDES WITH COORDINATING IMIDAZOLE SIDE-GROUPS, Polish Journal of Chemistry, 67(8), 1993, pp. 1345-1354
Two systems: Co(II)-glycyl-L-histidine and Co(II)-L-histidylglycine ha
ve been investigated in comparison with Co(II)-L-histidine. The studie
s under both oxygen-free and pure oxygen conditions revealed significa
nt differences between the two systems within the complexation mechani
sm and oxygen uptake power. The CoLH-1 active complex (where L = glycy
l-L-histidine) proved to be an efficient dioxygen carrier (approximate
ly 80 % reversibility).