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A catalogue of splice junction and putative branch point sequences from plant introns.

Splice junction and possible branch point sequences have been collected from 177 plant introns. Consensus sequences for the 5' and 3' splice junctions and for possible branch points have been derived. The splice junction consensus sequences were virtually identical to those of animal introns except that the polypyrimidine stretch at the 3' splice junction was less pronounced in the plant introns. A search for possible branch points with sequences related to the yeast, vertebrate and fungal consensus sequences revealed a similar sequence in plant introns.