# Identifiers.org > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Identifiers.org > Markdown URL: https://mediated.wiki/source/Identifiers.org.md > Source: https://en.wikipedia.org/wiki/Identifiers.org > Source revision: 1356160531 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) {{multiple issues| {{notability|date=May 2019}} {{third-party|date=May 2019}} }} '''Identifiers.org''' is a project providing stable and perennial identifiers for data records used in the Life Sciences. The identifiers are provided in the form of [Uniform Resource Identifiers](/source/Uniform_Resource_Identifiers) (URIs). It is also a resolving system that relies on collections listed in the [MIRIAM Registry](/source/MIRIAM_Registry) to provide direct access to different instances of the identified records. == URIs and resolving system == The Identifiers.org URIs{{cite journal |pmid=22140103 |year=2012 |last1=Juty |first1=N |last2=Le Novère |first2=N |last3=Laibe |first3=C |title=Identifiers.org and MIRIAM Registry: Community resources to provide persistent identification |volume=40 |issue=Database issue |pages=D580–6 |doi=10.1093/nar/gkr1097 |pmc=3245029 |journal=Nucleic Acids Research}}[https://identifiers.org/ Identifiers.org website] are perennial identifiers, that specify at once the data collection, using the namespaces of the Registry, and the record identifier within the collection in the form of a unique resolvable [URI](/source/URI). The Identifiers.org resolving system is built upon the information stored in the [MIRIAM Registry](/source/MIRIAM_Registry),{{cite journal |pmid=18078503 |year=2007 |last1=Laibe |first1=C |last2=Le Novère |first2=N|title=MIRIAM Resources: tools to generate and resolve robust cross-references in Systems Biology |volume=1 |pages=58 |doi=10.1186/1752-0509-1-58 |pmc=2259379 |journal=BMC Systems Biology |doi-access=free }} which is a database that stores namespaces assigned to commonly used data collections (databases and [ontologies](/source/ontologies)) for the Life Sciences. It transforms an Identifiers.org URI into the various URLs leading to the various instances of the record identified by the URI. Identifiers.org is part of the [ELIXIR](/source/ELIXIR) Interoperability Platform.[https://www.elixir-europe.org/platforms/interoperability ELIXIR Interoperability Platform]. === Identifier structure === An Identifiers.org URI is formed of several parts: * Protocol. Identifiers.org URIs are [HTTP](/source/HTTP) URIs and start with "http:/" * Data collection. These are namespaces listed in the [MIRIAM Registry](/source/MIRIAM_Registry). For instance "pubmed" for the publication resource [PubMed](/source/PubMed), "ec-code" for the [enzyme nomenclature](/source/enzyme_nomenclature) and "go" for [gene ontology](/source/gene_ontology) * Record in the collection. For instance "9606" is "3-fluorotoluene" in the collection PubChem, it is "Homo sapiens" in the collection "taxonomy" and it is a social science publication in the collection "pubmed". * Optional: Identifiers.org URIs can be suffixed with parameters, for instance imposing which resource to use for resolving, "profiles" that control the resolver's behaviour etc. thumb|Structure and examples of Identifiers.org URIs. === Usage === The system allows a consistent and uniform annotation of datasets. This in turn facilitates data alignment and integration. Identifiers.org URIs are used to encode the metadata in the standard formats of the [COMBINE](/source/COMBINE) initiative, such as [SBML](/source/SBML). In particular, databases such as [BioModels Database](/source/BioModels_Database) and [Reactome](/source/Reactome) export their data in SBML with cross-references encoded using Identifiers.org URIs. These URIs are also used in various semantic web projects such as [Bio2RDF](/source/Bio2RDF), Open PHACTS and the EBI RDF platformS Jupp, J Malone, J Bolleman, M Brandizi, M Davies, L Garcia, A Gaulton, S Gehant, C Laibe, N Redaschi, SM Wimalaratne, M Martin, N Le Novère, H Parkinson, E Birney, AM Jenkinson (2014) The EBI RDF Platform: Linked Open Data for the Life Sciences. ''Bioinformatics'' {{doi|10.1093/bioinformatics/btt765}} Identifiers.org is part of the Interoperability Platform of the [European life-sciences Infrastructure for biological Information](/source/ELIXIR). === Comparison with other URI systems === Identifiers.org URIs have been developed since 2011 as a resolvable version of the [MIRIAM](/source/MIRIAM) identifiers, developed since 2005, which were of a [URN](/source/Uniform_resource_name) form, and not directly resolvable. Identifiers.org URIs are similar to [PURL](/source/PURL)s, albeit providing alternative resolutions for collections with several instances. They are also similar to [DOI](/source/Digital_object_identifier)s, but provide human readable collection names, and re-use the record identifier assigned by the data provider. == See also == * [MIRIAM Registry](/source/MIRIAM_Registry) * [BioModels](/source/BioModels) * [SBML](/source/SBML) * [CellML](/source/CellML) * [LSID](/source/LSID) * [Digital object identifier](/source/Digital_object_identifier) * [Persistent uniform resource locator](/source/Persistent_uniform_resource_locator) == References == {{Reflist}} == External links == * [http://identifiers.org identifiers.org website] * [https://co.mbine.org/standards standards of the COMBINE initiative] * [https://www.openphacts.org/ Open PHACTS], the Open Pharmacological Space Category:Bioinformatics Category:Identifiers Category:Metadata Category:Science and technology in Cambridgeshire Category:South Cambridgeshire District Category:URI schemes --- Adapted from the Wikipedia article [Identifiers.org](https://en.wikipedia.org/wiki/Identifiers.org) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Identifiers.org?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.