Nonspecific esterase isozymes that focus at identical isoelectric points are kinetically analogous.

Isoelectric points of viruses.

Viruses as well as other (bio-)colloids possess a pH-dependent surface charge in polar media such as water. This electrostatic charge determines the mobility of the soft particle in an electric field and thus governs its colloidal behaviour which plays a major role in virus sorption processes. The pH value at which the net surface charge switches its sign is referred to as the isoelectric point...

Are Biosimilars Identical to the Reference Products?

Plant Cuticles Are Polyelectrolytes with Isoelectric Points around Three.

The isoelectric points of isolated cuticles from Citrus aurantium L. (3.15), Prunus armeniaca L. (3.45), and Pyrus communis L. (2.90) leaves were determined from membrane potentials. At pH values below the isoelectric point, cuticular membranes carry a net positive charge and are permselective to anions (determined using (82)Br(-)). Above the isoelectric point, they carry a net negative charge ...

Are Biosimilars Identical to the Reference Products?

Monocyte Nonspecific Esterase: Purification and Subunit Structure

Monocyte nonspecific esterase has been purified from cultured cells of the acute myeloid leukemia cell line. ML-l. The purified enzyme shows the characteristic properties of the monocyte neutral serine carboxyI esterase, with high sensitivity to organophosphorus inhibitors and sodium fluoride inhibitor. The enzyme is a membrane protein which in the native state exists as a monomer of a mol wt o...