β Scribed by Sung Ick Park; Hiromi Sakai; Shinji Takeoka; Hiroyuki Nishide; Eishun Tsuchida
No coin nor oath required. For personal study only.
A polymer composite film of hemoglobin (Hb-polymer film) was prepared by the casting of an Hb-polymer mixed solution (weight ratio of Hb to polymer is 1 to 1). The percentages of O 2 and CO saturation of the Hb-dextran film were 46% and 70%, respectively. In the Hb solution, 100% saturation was observed for both ligands, and a humidified Hb-dextran film also showed 100% saturation. Water molecules would provide flexibility to the matrix polymer and promote a structural change in the Hb from a tense state (T) to a relaxed state (R). Thus the ligand binding to the Hb in the polymer films was strongly affected by the degree of interaction of Hb with the matrix polymers and the physical properties of the polymers. Inositol hexaphosphate (IHP) worked as an allosteric effector even in the solid polymer film and lowered the oxygen affinity of Hb. The O 2 transport through an Hbpolyethyleneimine (PEI) film with IHP showed the facilitated O 2 transport in comparison with the film without IHP because of the high dissociation rate of O 2 from Hb with IHP.
π SIMILAR VOLUMES
The populations of the nascent CO formed in the reactions oi COS with 0(3P~) and O(" Dz) atoms: O? P) + cos s co? + so, O(' D) c COS 4 COi + SO have been determined by a CO laser resonant absorption method. The fraction of the total available energy channelled into CO as vibration ~1s calculated to
Oxygen reduction at a polyaniline cathode occurs in aqueous sulfuric acid through a chemica-electrochemical route which involves the intermediate oxidation of leucoemeraldine to emetaldine with the formation of H,O,. This paper specifically deals with the conversion of leucoemeraldine to emeraldine