Genomic Standards Consortium

The Genomic Standards Consortium (GSC) is an open-membership working body formed in September 2005. The aim of the GSC is making genomic data discoverable. The GSC enables genomic data integration, discovery and comparison through international community-driven standards.

This project is maintained by GenomicsStandardsConsortium

Genomic Standards Consortium


Since release 5.0, the following checklists are under the MIxS umbrella:

MIGS and MIMARKS are further divided into additional subchecklists, based on the genome sequence in question, or the sequencing type.

Core and type-specific descriptors

All checklists share the same central set of core (Minimum) descriptors, which are:

Each checklist is then defined by additional type-specific descriptors. These specific descriptors are summarized below for each checklist and subchecklist. Please note that this summary only includes minimum information for each sequence type, meaning that other conditional and optional descriptors are not included here.












Environmental packages

The core MIxS team have developed a series environmental packages which expand on the basic set of mandatory terms to help flesh out metadata expectations for more specific environmental samples. These packages are described more on their individual pages.

A few important notes:

Date & Time


Missing value reporting

If a value is missing, please consider using the INSDC missing value vocabulary. This list of values is designed to give reasons for the missing value which can be very useful when interpreting the related data. The valid missing values are summarised below:

If none of the above are appropriate, it may indicate that the standard is not the correct one to model or represent the information, consider using other checklist(s), or adjusting the template to remove terms that are not appropriate (be careful to not remove mandatory terms!).

ENVO term usage

MIxS terms

Here we list all possible terms defined within the GSC MIxS checklists.

There are autogenerated read-the-docs pages for all Checklist and packages that can be found here.