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The IntAct Database Sandra Orchard & Birgit Meldal
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2 1.Publicly available repository of molecular interactions (mainly PPIs) - >333K binary interactions taken from >6620 publications (Aug 2013) 2.Data is standards-compliant and available via our website, for download at our ftp site or via PSICQUIC 3.Provide open-access editor for those who wish to curate molecular interactions. IntAct goals & achievements http://www.ebi.ac.uk/intact ftp://ftp.ebi.ac.uk/pub/databases/intact www.ebi.ac.uk/Tools/webservices/psicquic/view/main.xhtml
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Master headline “Lifecycle of an Interaction” Publication (full text) Sanity Checks (nightly) IntAct Curation CVs curator report Curation manual. reject Super curator annotate p1 p2 I exp IMEx MatrixDB Mint DIP Public web site FTP site accept check
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4 UniProt Knowledge Base http://www.ebi.uniprot.org/ Interactions can be mapped to the canonical sequence….. to splice variants.... or to post- processed chains
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Relationship with UniProtKB Master headline Protein sequence Data filters Other IMEx databases High confidence PPIs Interaction curation Other DBs
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6 Data model Support for detailed features i.e. definition of interacting interface Interacting domains Overlay of Ranges on sequence:
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7 How to deal with Complexes Some experimental protocol do generate complex data: Eg. Tandem affinity purification (TAP) One may want to convert these complexes into sets of binary interactions, 2 algorithms are available:
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Performing and visualing a Simple Search
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9 IntAct – Home Page http://www.ebi.ac.uk/intact
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Performing a Simple Search 10
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11 Visualizing - networkView From search to networkView…
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Extend and Visualise your Search 12
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Visualisation – network view 13
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Cytoscape Web 14 Cytoscape Web - web-based network visualization tool Modeled after Cytoscape – open-source, interactive, customizable and easily integrated into web sites. Contains none of the plugin architecture functionality of Cytoscape
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Visualisation Master headline Opening the network in Cytoscape…
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Master headline Visualization Applying a better graph layout…
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Master headline Visualization Applying a better graph layout…
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Master headline Visualization Highlighting network properties…
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Master headline Visualization Highlighting network properties…
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Master headline Visualization Highlighting network properties…
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Master headline Visualization Highlighting network properties…
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Cytoscape Plugins 22
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Exploring a single interaction in more depth
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Interaction detail 24 Choice of UniProtKB or Dasty View Details of interaction UniProt PubMed/IMEx ID
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Detail of interaction 25 Expansion method Details of interaction Interaction Score
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Interaction Score 26 All evidences of Protein A interacting with Protein B are clustered. Evidences are scored according to a. Interaction detection method b. Interaction type c. Number of publications interaction has been observed in Score is normalised on 0-1 scale Low score – low confidence interaction High score – high confidence interaction
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Participant information 27 Search result for ‘RAD1’
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28 Browsing – Molecule View Binary view of o60671_human
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Interaction detail 29 First search from the home page… Details of interaction
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Viewing Interaction Details 30 Additional information
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Interaction Details 31
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IntAct – Home Page-Quick Search 32
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Advanced search Filtering options Add more filtering options
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Ontology search 34
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35 Searching with MIQL First search from the home page… Using the Molecular Interaction Query Language (MIQL), one can also build complex queries List of terms one can query on :
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36 Network analysis Analyzing protein-protein interaction networks. Koh GC, Porras P, Aranda B, Hermjakob H, Orchard SE PMID:22385417 J Proteome Res [2012 (11) ] page info:2014-31
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37 www.ebi.ac.uk/training/online
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