454 Genome Sequence Assembly and Analysis HC70AL S09 04-13-09 Brandon Le & Min Chen.

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Presentation transcript:

454 Genome Sequence Assembly and Analysis HC70AL S Brandon Le & Min Chen

Shotgun Genome Sequencing original DNA 454 Sequencing Sequence Analysis Begins!!! fragmented DNA REPEAT 1

Genome Sequence Analysis - Step One Assemble Sequences into Contigs Sequenced fragmented DNA AAACGCGATCGATCGATCGA AAACGCGATCGATCGATCGATCGATCGATCGAT CGTAG CGATCGATCGATCGATCGTAG AAACGCGATCGATCGATCGA Assembled DNA Sequence CONTIG 1CONTIG 2CONTIG 3

Genome Sequence Analysis - Step One Initial Problem with Assembly Sequenced fragmented DNA Incorrectly Assembled DNA Sequence CONTIG 1 CONTIG 2

Genome Sequence Analysis - Step One Need to Mask Repeats Sequenced fragmented DNA Masked DNA Sequence CONTIG 1 CONTIG 3 CONTIG 5 CONTIG 2 CONTIG 4 Assembled DNA Sequence

Genome Sequence Analysis - Step Two Determine Open Reading Frame CONTIG 1 CONTIG 3 CONTIG 5 CONTIG 2 CONTIG 4 Assembled DNA Sequence GENE 1 GENE 2 Identify ORF