Brush Border Particulates of Renal Tissue

Autor: Elizabeth Milikin, Francis Binkley, Reba K. Wright, Ina Jane Wundram, Neva King, C. H. O'Neal
Rok vydání: 1968
Předmět:
Zdroj: Science. 162:1009-1011
ISSN: 1095-9203
0036-8075
DOI: 10.1126/science.162.3857.1009
Popis: Particulates containing a large part of the alkaline phosphatase activity of renal tissue were separated from homogenates and from ribosomal preparations by zonal centrifugation. The particles had a high content of phospholipid and cholesterol that was not removed by treatment with I percent deoxycholate. Enzymatic activities concentrated with the particles were the alkaline phosphatase, a peptidase resistant to proteolysis, glucose-6-phosphatase, inorganic pyrophos-phatase, and adenosine triphosphatase. The particles accumulated leucine with no stimulation from soluble factors and with inhibition by other amino acids; the accumulation was stimulated by adenosine triphosphate and was not inhibited by puromycin. The particles appear to be derived from the membranes of the brush borders of tubular cells.
Databáze: OpenAIRE