Characterization of β-glucosidase from Aspergillus terreus and its application in the hydrolysis of soybean isoflavones.

An extracellular β-glucosidase produced by Aspergillus terreus was identified, purified, characterized and was tested for the hydrolysis of soybean isoflavone. Matrix-assisted laser desorption/ionization with tandem time-of-flight/time-of-flight mass spectrometry (MALDI-TOF/TOF MS) revealed the protein to be a member of the glycosyl hydrolase family 3 with an apparent molecular mass of about 120 kDa. The purified β-glucosidase showed optimal activity at pH 5.

[Attachment and spreading of fibroblasts on titanium coatings by different micro-arc oxidation time].

Purpose: To investigate the attachment and spreading of fibroblasts on titanium coatings by different micro-arc oxidation(MAO) time.

Methods: Micro-arc oxidation film was formed on the titanium surface by using micro-arc oxidation. The film morphology and the cell shape on the samples were observed by scanning electron microscopy (SEM) and the surface roughness of film with different time was analyzed by surface coarseness profiling instrument.

Hemangiopoietin, a novel human growth factor for the primitive cells of both hematopoietic and endothelial cell lineages.

The cells of hematopoietic and vascular endothelial cell lineages are believed to share a common precursor, termed hemangioblast. However, the existence of a growth factor acting relatively specifically on hemangioblasts remains unclear. Here we report the identification of hemangiopoietin (HAPO), a novel growth factor acting on both hematopoietic and endothelial cell lineages.