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© IRL Press Limited

Two computer programs for rapid entry of DNA sequence data

Hal B. Jenson

Departments of Pediatrics, and Epidemiology and Public Health, Yale University School of Medicine New Haven, CT 06510, USA

Two computer programs for the IBM personal computer are described for rapid and accurate entry of DNA sequence data. The DNA sequence files produced can be used directly by the DNA sequence manipulation programs by R. Staden (the DataBase system), the University of Wisconsin Genetics Computer Group, DNASTAR, or D. Mount. The first program, DIGISEQ, utilizes a sonic digitizer for semi-automation of sequence entry. To enter the DNA sequence each band of a gel reading is touched by the stylus of the sonic digitizer. DIGISEQ corrects for both changes in lane width and lane curvature. The algorithm is extremely efficient and rarely requires re-entenng the centers of the lanes. The second program, TYPESEQ, uses only the keyboard for input. The keyboard is reconfigured to place nucleotides and ambiguity codes under the fingers of one hand, corresponding to the order of the nucleotides on the gel defined by the user Both programs produce individual tones for each nucleotide, and certain ambiguity codes. This verifies input of the correct nucleotide or ambiguity code, and thus eliminates the need to visually check the screen display during sequence entry.

Received on November 16, 1986; accepted on June 16, 1987

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