Introduction to STRING
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![Page 1: Introduction to STRING](https://reader035.fdocuments.in/reader035/viewer/2022062401/58f30d021a28ab02648b4581/html5/thumbnails/1.jpg)
Introduction to STRING
Lars Juhl JensenEMBL Heidelberg
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STRING
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integrate diverse evidence
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functional interactions
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hundreds of proteomes
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Ensembl
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SWISS-PROT
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prokaryotes
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genomic context methods
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gene fusion
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gene neighborhood
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phylogenetic profiles
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Cell
Cellulosomes
Cellulose
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eukaryotes
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data integration
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curated knowledge
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MIPSMunich Information center
for Protein Sequences
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Reactome
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KEGGKyoto Encyclopedia of Genes and Genomes
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STKESignal Transduction Knowledge Environment
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literature mining
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co-mentioning
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NLPNatural Language Processing
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MEDLINE
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SGDSaccharomyces Genome Database
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The Interactive Fly
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OMIMOnline Mendelian Inheritance in Man
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primary experimental data
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microarray expression data
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GEOGene Expression Omnibus
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SMDStanford Microarray Database
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physical protein interactions
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BINDBiomolecular Interaction Network Database
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MINTMolecular Interactions Database
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GRIDGeneral Repository for Interaction Datasets
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DIPDatabase of Interacting Proteins
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HPRDHuman Protein Reference Database
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problems
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many sources
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different gene identifiers
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many types of evidence
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questionable quality
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not directly comparable
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spread over many species
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parsers
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synonyms lists
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quality scores
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benchmarking
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orthology
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how is it actually done?
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gene fusion
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Find in A genes that matcha the same gene in B
Exclude overlappingalignments
Calibrate againstKEGG maps
Calculate all-against-allpairwise alignments
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gene neighborhood
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Identify runs of adjacent geneswith the same direction
Score each gene pair based onintergenic distances
Calibrate against KEGG maps
Infer associationsin other species
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phylogenetic profiles
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Align all proteins against all
Calculate best-hit profile
Join similar species by PCA
Calculate PC profile distances
Calibrate against KEGG maps
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literature co-occurrence
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Associate abstracts with species
Identify gene names in title/abstract
Count (co-)occurrences of genes
Test significance of associations
Calibrate against KEGG maps
Infer associations in other species
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physical interaction data
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Make binaryrepresentationof complexes
Yeast two-hybriddata sets are
inherently binary
Calculate scorefrom number of
(co-)occurrences
Calculate scorefrom non-shared
partners
Calibrate against KEGG maps
Infer associations in other species
Combine evidence from experiments
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calibrate against KEGG
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transfer by orthology
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orthologous groups
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fuzzy orthology
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?
Source species
Target species
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combine all evidence
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AcknowledgmentsThe STRING team (EMBL)– Christian von Mering– Berend Snel– Martijn Huynen– Sean Hooper– Samuel Chaffron– Julien Lagarde– Mathilde Foglierini– Peer Bork
Literature mining project(EML Research)– Jasmin Saric– Rossitza Ouzounova– Isabel Rojas
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Thank you!