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NCBI Molecular Biology Resources. Using Entrez. January 2008. WWW Access. Entrez & BLAST. Entrez: Database Integration. Word weight. PubMed abstracts. 3-D Structure. 3 -D Structure. Homologene. VAST. Gene. Neighbors Related Structures. Protein sequences. Nucleotide sequences.
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NCBI Molecular Biology Resources Using Entrez January 2008
WWWAccess Entrez & BLAST
Entrez: Database Integration Word weight PubMed abstracts 3-D Structure 3 -D Structure Homologene VAST Gene Neighbors Related Structures Protein sequences Nucleotide sequences BLAST BLAST Neighbors Related Sequences BLink Domains Neighbors Related Sequences Hard Link
SNP GEO Gene PubMed Protein The Links Menu: Access to Neighbors and Links
Neighbors: BLAST Link pre-computed BLAST Neighbors: pre-computed CDD search The Links Menu: Access to Neighbors and Links
Neighbors Hard Links The Links Menu: Access to Neighbors and Links
Database Searching with Entrez Using limits and field restriction to find human MutL homolog Linking and neighboring with MutL Mapping SNPs onto structure
colon cancer Global NCBI (Entrez) Search
Nucleotide Sequences • Nucleotide database now three parts • EST expressed sequence tags • GSS genome survey sequences • CoreNucleotide everything else
New! Gene Preview more relevant results New! Taxonomy Filters Core Nucleotide Results with Gene Preview
Advanced Search Options Tabs Tabs Taxonomy filter
More Precise Nucleotides Search colon cancer[Title] AND nonpolyposis[Title] AND human[Organism] AND biomol_mrna[Properties] AND srcdb_refseq[Properties]
Useful Field Restrictions • [Title]: Definition line in GenBank / GenPept format shown in Summary format • glyceraldehyde 3 phosphate dehydrogenase[Title] • [Organism]: NCBI’s taxonomy. Organizing system for molecular databases • mouse[organism]; green plants[organism]; Streptomyces coelicolor[organism] • [Properties]: molecule type, location, database source • biomol_mrna[properties]; biomol_genomic[properties]; • gene_in_mitochondrion[properties];srcdb pdb[properties] • [Filter]: subsets of data, Entrez links • all[filter]; nucleotide mapview[filter]; nucleotide omim[filter]
Entrez Tip: Start Searches in Gene BLink Homologene: Gene Neighbors
Gene Results nonpolyposis colon cancer AND human[Organism]
Precise Results MLH1[Gene Name] AND Human[Organism] NCBI Taxonomy
Organism Field: NCBI’s Taxonomy All molecular databases
Map Viewer: All Sequences Customizable Transcripts EST Hits Download data and sequences Models NCBI Assembly Gene Annotations
Synteny: Mammalian Genomes Albumin Gene Family
Gene Links Protein Links HomoloGene Cluster
HomoloGene Downloader Protien mRNA Genomic
Finding Homologs 2: BLink Gene Protein
BLink: BLAST Link (Best Hits) Redundant Proteins First 200 only Tomato homolog BLAST
ATPase domain GeneView: Variations Human MLH1
Sequence Similar Structures Conserved Domain Link to Structure Link to Alignment
E. coli MutL Structure Cn3D viewer Conserved Domains
Alignment Based Model: Mapping Polymorphisms Mg2+ binding site Ile - Val
Better Model: Conserved Domain Gene Protein Related Structures
Better Model: Conserved Domain Mg2+ binding site Ile – Val Position 32