In animal systems the C2H2 zinc finger protein (ZFP) genefamily is the largest group of regulatory proteins and its members havea wide and important role in growth and development. It is likely thatthis family of ZFP transcription factors will also be important inplants. We have used a PCR approach employing highly degenerateoligonucleotide primers to isolate several Arabidopsis genomic andcDNA clones encoding potential ZFPs. In addition we have used thesequence information from these clones to identify two ESTs as membersof this family. Five two-fingered and one three-fingered ZFPs have beenidentified. Outside of the zinc finger regions, there is considerablesequence diversity, including the sequence and length of the interfingerregion; the expression pattern of each gene is different. This is thefirst report of the isolation of a three-fingered plant C2H2ZFP gene and we discuss its possible evolutionary origin fromtwo-fingered ZFP genes.
Plant Molecular Biology – Springer Journals
Published: Sep 29, 2004
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