Hydroxyethylphosphonate dioxygenase (HEPD) catalyzes the O(2)-dependent cleavage of the carbon-carbon bond of 2-hydroxyethylphosphonate (2-HEP) to afford hydroxymethylphosphonate (HMP) and formate without input of electrons or use of any organic cofactors. Two mechanisms have been proposed to account for this reaction. One involves initial hydroxylation of substrate to an acetal intermediate an...

A 3D porous Ag-Bi electrode was developed to achieve the highly selective reduction of CO2 into formate. Ag particles were deposited on Bi coated graphite felt by galvanic displacement reaction. The selectivity enhanced with compared felt. bimetallic catalytic system converted formate a high 88% at -1.6 VSCE. structure and large surface area facilitated mass transport, leading current density 7...

Aleem, M. I. H. (Research Institute for Advanced Studies, Baltimore, Md.). Thiosulfate oxidation and electron transport in Thiobacillus novellus. J. Bacteriol. 90:95-101. 1965.-A cell-free soluble enzyme system capable of oxidizing thiosulfate was obtained from Thiobacillus novellus adapted to grow autotrophically. The enzyme systems of autotrophically grown cells brought about the transfer of ...

Z. Naturforsch. 4 8c , 251 2 5 8 (1993); received October 27, 1992 Bicarbonate Effect, Chloroacetates, Chlorophyll a Fluorescence, D 1 and D 2 Mutants, Herbicides In this paper the current status of the so-called bicarbonate effect is presented. Several chem­ icals (such as formate, azide, nitrite and nitric oxide) are known to inhibit the two-electron gate of photosystem II (PS II). A remerkab...

The labile germylene hydride L(Cy)GeH is capable of activating CO2 affording the corresponding formate L(Cy)GeOCH([double bond, length as m-dash]O) (2) (L(Cy) = cyclo-C6H8-1-NAr-2-C(Ph)NAr, Ar = 2,6-iPr2C6H3). Compound and the previously reported LGeOCH([double bond, length as m-dash]O) (L = CH(MeC[double bond, length as m-dash]NAr)2, Ar = 2,6-iPr2C6H3) (2) could be further converted to methano...

Bismuth-based electrocatalysts are promising candidates for electrochemical CO2 reduction to formate attributing the accelerated formation of *OCHO intermediate, while high-energy consumption remains a major challenge practicability. Herein, we present ultrathin Bi2O2CO3 nanosheets with abundant oxygen vacancy (Vo-BOC-NS) reconstructed from S, N-co-doped bismuth oxides that can act as durable e...

The photosynthetic green alga Chlamydomonas reinhardtii is capable of performing a complex fermentative metabolism which is related to the mixed acid fermentation of bacteria such as Escherichia coli. The fermentative pattern includes the products formate, ethanol, acetate, glycerol, lactate, carbon dioxide and molecular hydrogen (H(2)). H(2) production is catalysed by an active [Fe]-hydrogenas...