Add time:08/11/2019         Source:sciencedirect.com

Tetrahymena 14-nm filament-forming protein (cas 135343-59-8) (49K protein) is a structural protein which is involved in activity of the pronuclei during conjugation (O. Numata, T. Sugai, and Y. Watanabe (1985)Nature (London) 314, 192–194). Using monoclonal and polyclonal antibodies, we here demonstrate the presence of a cross-reactive protein (CRP-49) within the macronuclear replication bands of Euplotes harpa and E. eurystomus which is recognized by anti-49K protein antibodies. Immunoblotting reveals that both monoclonal and polyclonal antibodies cross-react to a protein with an apparent molecular mass of 50 kDa in an E. harpa cell extract and to a protein of 49 kDa in a macronuclear extract of E. eurystomus. The antibodies used in this study have no effect upon in vitro DNA synthesis in the replication band of E. eurystomus.

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