Results: 23

Hydrogen/rydride ion relay - a mechanism for early electron transfer in cytochrome c oxidases

West Indian med. j; 62 (1), 2013
Cytochrome c oxidase (COX) employs electrons obtained from cytochrome c to bring about the reduction of oxygen to water. It is known that the electrons originate from the haem edge of cytochrome c and enters bovine COX at Trp-104. It is also known that Tyr-105, Glu-198 and Asp-158 of COX subunit II play ...

Biohydrogen production by Thermoanaerobacterium thermosaccharolyticum KKU-ED1: Culture conditions optimization using mixed xylose/arabinose as substrate

Electron. j. biotechnol; 16 (1), 2013
Background: Biological hydrogen production by microorganisms can be divided into two main categories i.e. photosynthetic organisms that produce hydrogen using light as energy source and anaerobic bacteria that produce hydrogen via dark fermentation. Dark fermentative hydrogen production by anaerobic bact...

Chemical composition and acaricidal activity of the leaf and fruit essential oils of Protium heptaphyllum (Aubl. ) Marchand (Burseraceae)

Acta amaz; 37 (1), 2007
Essential oils from leaves and fruits of Protiumheptaphyllum collected in Tamandaré beach Pernambuco/Brazil were analysed by GC/MS and tested for toxicity and repellent effect against the two spotted spider mite (Tetranychus urticae). The major constituent identified in the fruits was alpha-terpinene (4...