FMR0

fmr0 is a designation seen in various biological data sources but does not denote a single, universally recognized gene or molecule. In human genetics, the standard symbol for the gene encoding the Fragile X Mental Retardation Protein is FMR1; FMR0 is not an officially approved symbol in major nomenclature resources.

Usage in literature and databases varies: some older or species-specific datasets have used fmr0 as an informal alias for loci in the Fragile X-related region, or as a pseudogene near FMR1. Because gene nomenclature is organism-specific and constantly updated, fmr0 may refer to different sequences or be simply a placeholder in a dataset.

Nomenclature and verification: When encountering fmr0, researchers should determine the organism and consult authoritative databases such as HGNC for humans, MGI for mouse, ZFIN for zebrafish, or Ensembl/NCBI Gene for official symbols and IDs. If a sequence accompanies fmr0, researchers should cross-reference with accession numbers (for example RefSeq, GenBank) to identify the exact locus or transcript.

Conclusion: fmr0 illustrates how informal or legacy labels can persist in genomic data, underscoring the importance of verifying symbols against current resources.