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Bio informatics
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What is Bioinformatics?
  • Development of methods & algorithms to organize, integrate, analyze and interpret biological and biomedical data
  • Study of the inherent structure & flow of biological information
  • Goals of bioinformatics:
    • Identify patterns
    • Classify
    • Make predictions
    • Create models
    • Better utilize existing knowledge
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Gene prediction
Codon usage (single exon)
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Gene prediction
Codon usage (multiple exons)
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The “old” biology
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The “new” biology
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Old vs New –
What’s the difference?
(1) Economics
  • Miniaturize – less cost
  • Multiplex – more data
  • Parallelize – save time
  • Automate – minimize human intervention
  • Thus, you must be able to deal with large amounts of data and trust the process that generated it
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What’s the difference?
(2) Scale
  • From gene sequencing (~ 1 KB) to genome sequencing (many MB, even GB)
  • From picking several genes for expression studies to analyzing the expression patterns of all genes
  • From a catalog of key genes in a few key species to a catalog of all genes in many species
  • Analyzing your data in isolation makes less sense when you can make much more powerful statements by including data from others
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What’s the difference?
(3) Logic
  • Hypothesis-driven research to data-driven research
  • Expertise-driven approach versus information-driven approach
  • Reductionist versus integrationist
  • How to answer the question becomes how to question an answer
  • Algorithmic approaches for filtering, normalizing, analyzing and interpreting become increasingly important
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Data-driven Science Done Wrong
  • Must have some hypothesis – data is not the end goal of science
  • Finding patterns in the data is where analysis starts, not ends
  • Must understand the limits of high-throughput technology (e.g. microarrays measure transcription only, one genome does not tell you about species variation, etc.)
  • Must understand or explore the limits of your algorithm


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Full length ORF of TvEST-14G2
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Focuses in Bioinformatics
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Goals Leading Toward Predictive Biology
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Reconstructing Cellular Functions
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Hallmarks of Cancer
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Platform for Systems Biology
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