The title tetra-nuclear complex, [Cu(4)Cl(6)O(C(13)H(11)N(3))(4)], features a tetra-hedral arrangement of copper(II) ions bonded to the central O atom (site symmetry [Formula: see text]). Each of the six edges of the Cu(4) tetra-hedron is bridged by a chloride ion (one of which has site symmetry 2), so that each copper ion is linked to the other three metal ions through the central O atom and t...

Microalgae Chlorella Vulgaris is enriched in vitamin B12 and cobalt ion which is positioned in the center of the vitamin molecule. This study aimed to investigate how different concentrations of cobalt chloride salt affected the vitamin B12 production by utilizing CO2  gas, to assess C. vulgaris biomass. Therefore, Bold’s basal medium used as the medium and  0.5, 1....

Fast gating is a unique property of chloride channels, where a permeating Cl(-) ion acts as its own ligand in opening the channel. The glutamate residue implicated in fast gating normally carries a unit negative charge. Whether this charge needs to be protonated to enable permeation of a Cl(-) ion is an important question that will affect how models of chloride channels are constructed. We inve...

The potential tridentate Schiff base ligand 2-[1-(2-pyridyl-methyl-imino)eth-yl]pyrrole (HL) was synthesized from the condensation of 2-acetyl-pyrrole with 2-amino-methyl-pyridine. The title compound, [Cu(C(12)H(12)N(3))Cl], was synthesized from HL and copper(II) chloride using triethyl-amine as a base to deprotonate the pyrrole NH group. The title compound is a monomer and the central copper(I...

In the title compound, [Mn(C(13)H(9)N(2)O)(2)(CH(3)OH)(2)]Cl, the Mn(III) atom (site symmetry ) is coordinated by two N,O-bidentate 2-(1H-benzimidazol-2-yl)phenolate ligands and two methanol mol-ecules, to generate a distorted trans-MnN(2)O(4) octa-hedral geometry for the metal ion. The dihedral angle between the aromatic ring systems in the ligand is 16.0 (3)°. In the crystal structure, the co...

Three inherent acidic chitinases were purified from yam aerial tuber by the application of quaternary ammonium ion detergent. For remoyal of the mucilage in the crude extract of aerial tuber, the effeets of various quaternary ammonium ion detergent were compared. Cetylpyridinium chloride effectiyely remoyed the mucilage and this method proyed to provide high recoyery of chitinase actiyity. Thre...