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Selecting items
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We have classified the content of databases in two ways:
(i) according to the items on which they contain information
(ii) the type of information available
(i) Content items
Biomolecule: the properties and functions of biological molecules that do not fall into the categories of DNA, RNA, Protein or Enzyme
cDNA: cDNA sequences and libraries
Cell: the structures, functions and properties of cells
Disease: disease phenotypes and epidemiology, the genetic basis of disease and animal models of human disease
DNA: the structure, properties and functions of DNA. Includes DNA sequences and sequence features. See also "Gene" and "Gene family"
DNA/Organism stock: stock centers for DNA clones, cells and whole organisms
Drug/Chemical: information about small, biologically active molecules. See also "Biomolecule"
Enzyme: as for "Protein" and "RNA", but with a focus on catalytic molecules
EST/STS: sequences and libraries for Expressed Sequence Tags and Sequence Tagged Sites
Gene: sequences, properties and biological functions of genes and gene products. See also "RNA", "Protein"
Gene family: as for "Gene" but with an emphasis on one or more gene families. See also "Protein family"
Journal article: article repositories and large bibliographic databases
Ontology: source databases for the development and management of controlled vocabularies and ontologies
Organism: information about the properties and features of whole organisms
Protein: structure, sequences, properties and functions of proteins. See also "Protein family"
Protein family: as for "Protein" but with an emphasis on one or more protein families. See also "Gene family"
RNA: structures, sequences, properties and functions of RNA
SNP: Single Nucleotide Polymorphisms, also other simple genetic variants
(ii) Information types
Computationally generated: the content is generated at least in part by algorithms. See also "Curated"
Curated: the content is managed by human intervention. See also "Computationally generated"
Experimental Data: databases holding experimental data, as opposed to sites linking to data held elsewhere
Expression: data concerning the localization and levels of gene expression in cells, tissues and whole organisms
Images: visual material of research or educational value
Interaction: the physical or genetic interactions between molecules
Links to other sources: sites with a large number of well-organized links to other websites
Nomenclature: the nomenclature of processes, molecules and organisms. See also "Ontology"
Phylogeny: the evolutionary relationships and classifications of molecules and organisms
Sequence: amino acid and nucleotide sequence data
Structure: the chemical and three-dimensional structures of biological and biologically active molecules
Synopses: databases with editorially created synopses of data
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