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© Oxford University Press

Hamming-Clustering method for signals prediction in 5' and 3' regions of eukaryotic genes

L. Milanesi , M. Muselli 1 and P. Arrigo 1

CNR, Istituto di Tecnologie Biomediche Avanzate Via Ampere 56, 20131 Milan
1Istituto per i Circuiti Elettronici Via De Marini 6, 16149 Genoa, Italy

MOTIVATION: Gene expression is regulated by different kinds of short nucleotide domains. These features can either activate or terminate the transcription process. To predict the signal sites in the 5' and 3' gene regions we applied the Hamming-Clustering network (HC) to the TATA box, to the transcription initiation site and to the poly(A) signal determination in DNA sequences. This approach employs a technique deriving from the synthesis of digital networks in order to generate prototypes, or rules, which can be directly analysed or used for the construction of a final neural network.

RESULTS: More than 1000 poly-A signals have been extracted from EMBL database rel. 42 and used to build the training and the test set. A full set of the eukaryotic genes (1252 entry) from the Eukaryotic Promoter Database (EPD rel. 42) have been used for the TATA-box signal and transcription initiation site training. A set of eukaryotic plant genes have been used to test the validity of the Hamming-Clustering network approach. The results show the applicability of the Hamming-Clustering method to functional signal prediction.

AVAILABILITY: The program implementing the algorithm has been written in C language and it is available on the Web server (http://www.itba.mi.cnr.it/webgene).

CONTACT: E-mail address: milanesi{at}itba.mi.cnr.it


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