Unknown

Dataset Information

0

Reaction of caa3-type terminal cytochrome oxidase from the thermophilic bacterium PS3 with oxygen and carbon monoxide at low temperatures.


ABSTRACT: Reaction of O2 and CO with a caa3-type terminal cytochrome oxidase (EC 1.9.3.1) from the thermophilic bacterium PS3 grown with high aeration was studied at low temperatures. The CO recombination at the temperature range studied (-50 degrees C to -80 degrees C) followed first-order kinetics with an activation energy of 29.3 kJ/mol (7.0 kcal/mol). In the presence of O2 at -113 degrees C the photolysed reduced form binds O2 to form an 'oxy' intermediate similar to Compound A. At a higher temperature (-97 degrees C) another intermediate, similar to Compound B, is formed as a result of electron transfer from the enzyme to the liganded O2.

SUBMITTER: Sone N 

PROVIDER: S-EPMC1144069 | biostudies-other | 1984 Jul

REPOSITORIES: biostudies-other

Similar Datasets

| S-EPMC1144366 | biostudies-other
| S-EPMC1172324 | biostudies-other
| S-EPMC1166106 | biostudies-other
| S-EPMC1161837 | biostudies-other
| S-EPMC6397517 | biostudies-literature
| S-EPMC1185743 | biostudies-other
| S-EPMC1158593 | biostudies-other
| S-EPMC1184028 | biostudies-other
| S-EPMC7306483 | biostudies-literature
| S-EPMC6203177 | biostudies-literature