Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Glycoprotein – e.g. – mucins – proteoglycans – etc.
Patent
1987-04-07
1989-06-13
Rosen, Sam
Chemistry: natural resins or derivatives; peptides or proteins;
Proteins, i.e., more than 100 amino acid residues
Glycoprotein, e.g., mucins, proteoglycans, etc.
530397, 536 187, C07K 1500
Patent
active
048394661
ABSTRACT:
An insulin activity messenger material and its precursor material are disclosed which have been isolated from hapatic plasma membrane cells that have been incubated with an enzyme known as a phosphatidylinositol-specific phospholipase C. The messenger material comprises a carbohydrate-based compound that exhibits the ability to modulate the activity of the insulin-sensitive enzymes pyruvate dehydrogenase, adenylate cyclase, acetyl CoA carboxylase, and low Km cAMP phosphodiesterase, and thereby effectuate the activity of insulin on the cellular level. The precursor material comprises an inositol containing glycolipid capable of phosphodiesteractic cleavage by a phosphatidylinositol-specific phospholipase C. The enzyme phosphatidylinositol-glycan specific phospholipase C has also been purified and found to participate in many of the activities identified with respect to the messenger and its precursor. Numerous diagnostic and therapeutic utilities are proposed, and testing procedures, materials in kit form and pharmaceutical compositions are likewise set forth.
REFERENCES:
Jarett et al-Chem. Abst. vol. 97 (1982), p. 85761z.
Rosen Sam
The Rockefeller University
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