Mutations of N-terminal regions render the retinoblastoma protein insufficient for functions in development and tumor suppression.

Abstract excerpt

To assess biological roles of the retinoblastoma protein (RB), four independent transgenic mouse lines expressing human RB with different deletions in the N-terminal region (RBdeltaN) were generated and compared with mice expressing identically regulated, full-length RB. Expression of both RB and RBdeltaN caused developmental growth retardation, but the wild-type protein was more potent. In contrast to wild-type...

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