---
title: "GO Mapping"
canonical: "https://help.biobam.com/space/BCD/2290221473/GO%20Mapping"
format: markdown
---
> Macro (details)
>
> | **Group** | Analysis |
> | --- | --- |
> | **Argument** | -mapping |
> | **Short Description** | Run GO Mapping. |
> | **Description** | Mapping is the process of retrieving GO terms associated with the Hits obtained by the BLAST search. OmicsBox performs four different mappings steps:
1. BLAST result accessions are used to retrieve gene names or symbols making use of two mapping files provided by the NCBI (gene_info, gene2accession). Identified gene names are then searched in the species-specific entries of the gene-product table of the GO database.
> 2. GeneBank identifiers (gi), the primary blast Hit ids, are used to retrieve UniProt IDs making use of a mapping file from PIR (Non-redundant Reference Protein Database) including PSD, UniProt, Swiss-Prot, TrEMBL, RefSeq, GenPept and PDB.
> 3. Accessions are searched directly in the dbxref table of the GO database.
> 4. BLAST result accessions are searched directly in the gene-product table of the GO database.
It is necessary to follow the [https://biobam.atlassian.net/wiki/spaces/BCD/pages/2250407989](https://biobam.atlassian.net/wiki/spaces/BCD/pages/2250407989) instructions on “Setting up a local Blast2GO Mapping Database” before. |
> | **Requirements** | - Access to a local MongoDB server with a GO Mapping database collection installed.
> - Load a sequence project in the same command, e.g. Blast .XML file or .box containing sequence data with Blast results. |
> | **Properties File** | LocalBlastAlgoParameters |