New method for quantitative determination of uronic acids

A modified uronic acid carbazole reaction

Quantitative estimation of sialic acids. II. A colorimetric resorcinol-hydrochloric acid method.

A specific color reaction of methylpentoses and a spectrophotometric micromethod for their determination.

Method for the determination of hexosamines in tissues.

Experiments were carried out to determine the localization of the insoluble structural glycoprotein which remains after exhaustive degradation of the bovine and rabbit lens capsules with high-purity collagenase. The material can be extracted from the residue with 0.1 M fimercaptoethanol at room temperature. Most of this material was shown to be present in the capside of the equatorial region of the lens. Furthermore, preparations of lens capsule containing the extracapsular fibrils of zonula Zinni were shown to contain about as much of this structural glycoprotein as the whole capsule itself. The glycoprotein appears to be a viajor constituent of the zonula fibrils and the compositibn of its carbohydrate suggests a close relationship to the glycoprotein of the vitreous body previously obtained in our laboratory as an insoluble precipitate after degradation of the hyaluronic acid of the vitreous.

An insoluble structural glycoprotein a major constituent of the zonula Zinni.

The aerobic glycolysis of avian red blood cells and its control by intracellular ions in physiological concentrations.

https://www.cell.com/trends/biochemical-sciences/pdf/0968-0004(76)90333-9.pdf

The discovery of feedback inhibition

Nutritional and Endocrine Influences on the Synthesis of Albuminoid in Rat Lenses*: I. The Effect of Restricted Diet and l-thyroxine on the Albuminoid Formation

t has been reported in the two preceding communications of this series' • that the decapsulated lens of beef and rabbit contain significant amounts of a glycoprotein fraction with a glycan, which essentially consists of galactose, some mannose, glucosamine, fucose, and derivatives of neuraminic acid. In fractionation by centrifugation, this glycoprotein could be sedimented with the albuminoid. It had been pointed out that this glycoprotein material does not form a prosthetic group with the albuminoid itself, as the ratio of carbohydrate to albuminoid varied significantly at different ages of the animal. This ratio in the

Glycoproteins of the lens in relation to age and cataract formation. iii. differences in composition and distribution of the carbohydrate of glycoprotein of lens fibers in different regions of the lens.

Zacharias Dische

Papers

An insoluble structural glycoprotein a major constituent of the zonula Zinni.

The aerobic glycolysis of avian red blood cells and its control by intracellular ions in physiological concentrations.

The discovery of feedback inhibition

Nutritional and Endocrine Influences on the Synthesis of Albuminoid in Rat Lenses*: I. The Effect of Restricted Diet and l-thyroxine on the Albuminoid Formation

Glycoproteins of the lens in relation to age and cataract formation. iii. differences in composition and distribution of the carbohydrate of glycoprotein of lens fibers in different regions of the lens.