The Universal Spectrum Identifier (USI) is a compound identifier that provides an abstract path to refer to a single spectrum generated by a mass spectrometer, and potentially the ion that is thought to have produced it.

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Pattern for Local Unique Identifiers

Local identifiers in Universal Spectrum Identifier should match this regular expression:

Example Local Unique Identifier
PXD002255::ES_XP_Ubi_97H_HCD_349:scan:9617:LAEIYVNSSFYK/2   Resolve
Pattern for CURIES

Compact URIs (CURIEs) constructed from Universal Spectrum Identifier should match this regular expression:

Example CURIE
MIRIAM Namespace Embedded in LUI
The legacy MIRIAM standard for generating CURIEs with this resource includes the namespaceEmbeddedInLUI as true. The actual part that gets prefixed before the local unique identifier regex, otherwise known as the banana, is mzspec:. Therefore, you might see local unique identifiers written out as CURIEs.
2021 Universal Spectrum Identifier for mass spectra.
Metaregistry Universal Spectrum Identifier

The metaregistry provides mappings between the Bioregistry and other registries. There are 4 mappings to external registries for mzspec with 2 unique external prefixes.

Registry Name Registry Metaprefix External Prefix Curate
BioContext biocontext MZSPEC
FAIRSharing FAIRSharing logo fairsharing FAIRsharing.b549b8 logo miriam mzspec
Name-to-Thing Name-to-Thing logo n2t mzspec

Providers are various services that resolve CURIEs to URLs. The example CURIE mzspec:PXD002255::ES_XP_Ubi_97H_HCD_349:scan:9617:LAEIYVNSSFYK/2 is used to demonstrate the provides available for mzspec. Generation of OLS and BioPortal URLs requires additional programmatic logic beyond string formatting.

Name Metaprefix URI
Universal Spectrum Identifier mzspec
Bioregistry bioregistry miriam
Name-to-Thing n2t
Extra Providers

Additional providers curated in the Bioregistry are listed here.

Code Name URL
CURATOR_REVIEW Universal Spectrum Identifier through Peptide Atlas