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Rouxs Arch Dev Biol. 1992 Feb;201(1):30-35. doi: 10.1007/BF00188773.

Partial characterization of neural-inducing factors from Xenopus gastrulae Evidence for a larger protein complex containing the factor.

Roux's archives of developmental biology : the official organ of the EDBO

Jutta Janeczek, Jochen Born, Peter Hoppe, Hildegard Tiedemann

Affiliations

  1. Institut fur Molekularbiologie and Biochemie, Freie Universität Berlin, Arnimallee 22, W-1000, Berlin 33, Germany.

PMID: 28305609 DOI: 10.1007/BF00188773

Abstract

High (Mr ≈ 90-110 kDa) and low (Mr ≈ 15-30 kDa) molecular weight forms of neural-inducing factors have been found in the supernatant of Xenopus gastrula homogenate. The factors, which are protein in nature, have been partially purified by size exclusion high-performance liquid chromatography (HPLC) and sodium dodecyl sulphate (SDS)-polyacrylamide gel electrophoresis. The factor of smaller size, which could be derived from a precursor, is associated with other proteins in a larger complex. The neural-inducing factors are not irreversibly inactivated after chemical deglycosylation with trifluoromethansulfonic acid. The neural-inducing protein which is found in ribonucleoprotein (RNP)-particles was partially purified by hydrophobic chromatography. Possible relationships of the factors in different subcellular fractions and their physiological significance are discussed.

Keywords: Neural induction; Protein factors; Xenopus laevis

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