The influence of the dispersion of pH and concentration of chemicals on zeta potential of kaolinite were investigated. Adding the cationic species led to an increase of the zeta potential, contrary to measuring done in water. The results proved that even a very low concentration of the cationic species (0.001 mol/L) causes a remarkable change of the zeta potential. The zeta potential of the kao...

Rebecca M. Voorhees,1,2,* Israel S. Fernández,1,2 Sjors H.W. Scheres,1 and Ramanujan S. Hegde1,* 1MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK 2Co-first authors *Correspondence: [email protected] (R.M.V.), [email protected] (R.S.H.) http://dx.doi.org/10.1016/j.cell.2014.05.024 This is an open access article under the CC BY license (http://cre...

Introduction [NiFe]-hydrogenases harbor a complex metal cofactor, NiFe(CN)2CO, in their active sites. Its biosynthesis requires specific maturation machinery, in which six Hyp proteins (HypABCDEF) play key roles. Four Hyp proteins (HypCDEF) are involved in the biosynthesis and incorporation of the Fe(CN)2CO group. After Fe insertion, HypA and HypB insert the Ni ion into the hydrogenase large su...

The initial wetting phenomena of MgO–SiO2 slag on MgO–C refractories were studied using the dispensed drop technique at 1873 K. As carbon content increased, apparent contact angle and height whereas radius decreased. change in according to was applied Cassie model. Reduced Si observed boundary between refractories.it seen that SiO2(l) + 2C(s) = Si(l) 2CO(g) main reaction.

Malea M. Murphy,1,2,3 Alexandra C. Keefe,1,2 Jennifer A. Lawson,1 Steven D. Flygare,1 Mark Yandell,1 and Gabrielle Kardon1,* 1Department of Human Genetics, University of Utah, Salt Lake City, UT 84112, USA 2Co-first author 3Present address: Children’s Research Institute at UT Southwestern, Dallas, TX 75390, USA *Correspondence: [email protected] http://dx.doi.org/10.1016/j.stemcr.2014.0...

UNLABELLED During biosynthesis of [NiFe]-hydrogenase 2 (Hyd-2) of Escherichia coli, a 15-amino-acid C-terminal peptide is cleaved from the catalytic large subunit precursor, pro-HybC. This peptide is removed only after NiFe(CN)2CO cofactor insertion by the Hyp accessory protein machinery has been completed, suggesting that it has a regulatory function during enzyme maturation. We show here that...