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McEntyre J, Ostell J, editors. The NCBI Handbook [Internet]. Bethesda (MD): National Center for Biotechnology Information (US); 2002-.
This publication is provided for historical reference only and the information may be out of date.
Table 1.
RefSeq accession numbers and molecule types.
| Accession prefix | Molecule type | Comment |
|---|---|---|
| AC_ | Genomic | Complete genomic molecule, usually alternate assembly |
| NC_ | Genomic | Complete genomic molecule, usually reference assembly |
| NG_ | Genomic | Incomplete genomic region |
| NT_ | Genomic | Contig or scaffold, clone-based or WGSa |
| NW_ | Genomic | Contig or scaffold, primarily WGSa |
| NZ_b | Genomic | Complete genomes and unfinished WGS data |
| NM_ | mRNA | Protein-coding transcripts (usually curated) |
| NR_ | RNA | Non-protein-coding transcripts |
| XM_c | mRNA | Predicted model protein-coding transcript |
| XR_c | RNA | Predicted model non-protein-coding transcript |
| AP_ | Protein | Annotated on AC_ alternate assembly |
| NP_ | Protein | Associated with an NM_ or NC_ accession |
| YP_c | Protein | Annotated on genomic molecules without an instantiated transcript record |
| XP_c | Protein | Predicted model, associated with an XM_ accession |
| WP_ | Protein | Non-redundant across multiple strains and species |
- a
Whole Genome Shotgun sequence data.
- b
An ordered collection of WGS sequence for a genome.
- c
Computed.
- Table 1. [RefSeq accession numbers and molecule types.]. - The NCBI HandbookTable 1. [RefSeq accession numbers and molecule types.]. - The NCBI Handbook
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