摘要
A heat\|stable growth factor has been purified to homogeneity from human placenta. Purification procedure involved extraction with acidic medium, precipitation using ethanol, DE\|52 ion\|exchange chromatography, and reversed\|phase HPLC. The purified preparation has been named human placental growth factor\|1 (HPGF\|1), which simulates the proliferation of some cell lines, such as human amniotic cell, mouse marrow tumor cell, and mouse fibroblast cell. The growth factor has an approximate molecular weight of 1 900. It is a glycopeptide which contains a polypeptide chain consisting of 10 amino acid residues with molecular weight of 1 195. The N\|terminal residue of the polypeptide chain part is phenylalanine. The molecular weight of non\|peptide part is 682. The isoelectric point of the growth factor is pI 6.8.
A heat\|stable growth factor has been purified to homogeneity from human placenta. Purification procedure involved extraction with acidic medium, precipitation using ethanol, DE\|52 ion\|exchange chromatography, and reversed\|phase HPLC. The purified preparation has been named human placental growth factor\|1 (HPGF\|1), which simulates the proliferation of some cell lines, such as human amniotic cell, mouse marrow tumor cell, and mouse fibroblast cell. The growth factor has an approximate molecular weight of 1 900. It is a glycopeptide which contains a polypeptide chain consisting of 10 amino acid residues with molecular weight of 1 195. The N\|terminal residue of the polypeptide chain part is phenylalanine. The molecular weight of non\|peptide part is 682. The isoelectric point of the growth factor is pI 6.8.
