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. 1988 Dec;85(24):9484-8.
doi: 10.1073/pnas.85.24.9484.

Purification and characterization of other distinct bone-inducing factors

E A Wang  1 , V Rosen, P Cordes, R M Hewick, M J Kriz, D P Luxenberg, B S Sibley, J M Wozney
Affiliations

Purification and characterization of other distinct bone-inducing factors

E A Wang et al. Proc Natl Acad Sci U S A. 1988 Dec.

Abstract

We purified a factor that induces bone formation greater than 300,000-fold from guanidinium chloride extracts of demineralized bone. Fifty nanograms of highly purified protein was active in an in vivo cartilage and bone-formation assay. The activity resided in a single gel band, corresponding to a molecular mass of approximately 30 kDa, which yielded proteins of 30, 18, and 16 kDa on reduction. The partial amino acid sequence obtained from these proteins confirmed our identification of specific factors that induce new bone formation in vivo.

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