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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Structure of yellow lupine genes coding for mitotic cyclins.

Cell cycle progression in eukaryotes is controlled by complexes of p34 protein kinases and cyclins. For the first time in plants, we have established the sequence of four yellow lupine mitotic cyclin B1 genes. Their coding regions and expression pattern were also characterised recently. Structure of all the four lupine genes is similar: they consist of nine exons and eight introns, analogously located, except Luplu;CycB1;3 lacking 7th intron. Analysis of 5'-regulatory sequences of two of them showed that both comprise M-specific activators (MSA), common to plant genes induced in late G2 and early M. Putative repressor binding sites CDE/CHR found in animal G2-specific promoters can also be detected in lupine genes. Controlling region of Luplu;CycB1;4 gene that is highly activated by IAA, contains up to 7 auxin response elements, while insensible to IAA Luplu;CycB1;4 gene have no such motifs. Further studies should be undertaken to determine precisely the functions of putative regulatory elements in the expression of lupine mitotic cyclins.[1]


  1. Structure of yellow lupine genes coding for mitotic cyclins. Jeleńska, J., Zaborowska, Z., Legocki, A.B. Acta Biochim. Pol. (1999) [Pubmed]
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