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  • Title: Molecular analysis of yeast chromosome II between CMD1 and LYS2: the excision repair gene RAD16 located in this region belongs to a novel group of double-finger proteins.
    Author: Mannhaupt G, Stucka R, Ehnle S, Vetter I, Feldmann H.
    Journal: Yeast; 1992 May; 8(5):397-408. PubMed ID: 1626431.
    Abstract:
    We have analysed a region some 30 kb centromere distal from PHO5 on the right arm of yeast chromosome II and determined the nucleotide sequence of a 8.95 kb DNA segment from this region. By this analysis we were able to derive the precise location and the transcriptional orientation of CMD1, ALG1, SSN6 and LYS2. An open reading frame of 2370 bp was localized between SSN6 and LYS2, which has recently been identified (Schild et al., 1991) to be the RAD16 gene. The putative gene product, 790 amino acids in length, reveals several interesting features. It contains a nuclear target signature and shares several blocks of similarity with the yeast recombinational repair protein RAD54 and the nuclear factor SNF2 (SWI2), which is required for the transcriptional activation of a number of yeast genes. The similarity blocks in these three proteins are reminiscent of those found in the helicase superfamily. Furthermore, RAD16 contains a novel 'double-finger' motif, which has been encountered in a variety of proteins from different organisms that are suggested to interact with DNA and are involved in diverse functions including site-specific recombination, DNA repair, and transcriptional regulation. The putative gene product of RAD16 then is the first example of a protein in which the novel double-finger motif is found to be combined with a potential DNA helicase framework.
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