MIxS Checklist · ERC000050
Minimum information to standardise metadata of binned metagenome samples. Ensures binned and MAG metagenome assembly metadata is compatible.
relationship_to_oxygenIs this organism an aerobe, anaerobe? Please note that aerobic and anaerobic are valid descriptors for microbial environments
sample_collection_methodThe method employed for collecting the sample. Can be provided in the form of a PMID, DOI, url or text.
metagenomic_sourceThe metagenomic source of the sample. This value should contain “metagenome” and be in the taxonomy database e.g. wastewater metagenome or human gut metagenome. Please note “metagenome” alone will not be accepted. Check here for more details on metagenome taxonomy: https://ena-docs.readthedocs.io/en/latest/faq_taxonomy.html#environmental-taxonomic-classifications
sample_derived_fromReference to parental sample(s) or original run(s) that the assembly is derived from. The referenced samples or runs should already be registered in INSDC. This should be formatted as one of the following. A single sample/run e.g. ERSxxxxxx OR a comma separated list e.g. ERSxxxxxx,ERSxxxxxx OR a range e.g. ERSxxxxxx-ERSxxxxxx
project_nameName of the project within which the sequencing was organized
multiplex_identifiersMolecular barcodes, called Multiplex Identifiers (MIDs), that are used to specifically tag unique samples in a sequencing run. Sequence should be reported in uppercase letters
relevant_electronic_resourcesA related resource that is referenced, cited, or otherwise associated to the sequence in the format of a PMID, DOI or URL
relevant_standard_operating_proceduresStandard operating procedures used in assembly and/or annotation of genomes, metagenomes or environmental sequences in the format of a PMID, DOI or URL
number_of_standard_trnas_extractedThe total number of tRNAs identified from the bin, SAG or MAG
16s_recoveredCan a 16S gene be recovered from the submitted bin, SAG or MAG?
16s_recovery_softwareTools used for 16S rRNA gene extraction. Add names and versions of software(s), parameters used
trna_extraction_softwareTools used for tRNA identification. Add names and versions of software(s), parameters used
completeness_scoreCompleteness score is typically based on either the fraction of markers found as compared to a database or the percent of a genome found as compared to a closely related reference genome. Completeness score is one of 3 attributes which in combination reflect the standard quality of a MAG, see here for more information: https://ena-docs.readthedocs.io/en/latest/faq_metagenomes.html. Mandatory for all samples directly linked with SAGs or MAGs.
completeness_softwareTools used for completion estimate, i.e. checkm, anvi'o, busco. Mandatory for all samples directly linked with SAGs or MAGs.
completeness_approachThe approach used to determine the completeness of a given bin, SAG or MAG, which would typically make use of a set of conserved marker genes or a closely related reference genome. For UViG completeness, include reference genome or group used, and contig feature suggesting a complete genome
contamination_scoreThe contamination score is based on the fraction of single-copy genes that are observed more than once in a query genome. Contamination score is one of 3 attributes which in combination reflect the standard quality of a MAG, see here for more information: https://ena-docs.readthedocs.io/en/latest/faq_metagenomes.html. If contamination ≥ 10% then please submit as a binned assembly. In SAGs, contamination score is mandatory for prokaryotes and optional for eukaryotes.
contamination_screening_inputThe type of sequence data used as input
contamination_screening_parametersSpecific parameters used in the decontamination sofware, such as reference database, coverage, and kmers. Combinations of these parameters may also be used, i.e. kmer and coverage, or reference database and kmer
decontamination_softwareTool(s) used in contamination screening
binning_softwareTool(s) used for the extraction of genomes from metagenomic datasets, where possible include a product ID (PID) of the tool(s) used. E.g. MetaCluster-TA (RRID:SCR_004599) or MaxBin (biotools:maxbin)
reassembly_post_binningHas an assembly been performed on a genome bin extracted from a metagenomic assembly?
mag_coverage_softwareTool(s) used to determine the genome coverage if coverage is used as a binning parameter in the extraction of genomes from metagenomic datasets e.g. bwa, bbmap, bowtie, other
assembly_qualityThe assembly quality category is based on sets of criteria outlined for each assembly quality category. For MISAG/MIMAG; Finished: Single, validated, contiguous sequence per replicon without gaps or ambiguities with a consensus error rate equivalent to Q50 or better. High Quality Draft:Multiple fragments where gaps span repetitive regions. Presence of the 23S, 16S and 5S rRNA genes and at least 18 tRNAs. Medium Quality Draft:Many fragments with little to no review of assembly other than reporting of standard assembly statistics. Low Quality Draft:Many fragments with little to no review of assembly other than reporting of standard assembly statistics. Assembly statistics include, but are not limited to total assembly size, number of contigs, contig N50/L50, and maximum contig length. For MIUVIG; Finished: Single, validated, contiguous sequence per replicon without gaps or ambiguities, with extensive manual review and editing to annotate putative gene functions and transcriptional units. High-quality draft genome: One or multiple fragments, totaling ≥ 90% of the expected genome or replicon sequence or predicted complete. Genome fragment(s): One or multiple fragments, totalling < 90% of the expected genome or replicon sequence, or for which no genome size could be estimated.
investigation_typeNucleic Acid Sequence Report is the root element of all MIxS compliant reports as standardised by Genomic Standards Consortium
binning_parametersThe parameters that have been applied during the extraction of genomes from metagenomic datasets e.g. coverage and kmer
taxonomic_identity_markerThe phylogenetic marker(s) used to assign an organism name to the bin, SAG or MAG. Examples are 16S gene, multi-marker approach or other e.g. rpoB gene. Mandatory for all samples directly linked with SAGs or MAGs.
isolation_sourcedescribes the physical, environmental and/or local geographical source of the biological sample from which the sample was derived
collection_dateThe date the sample was collected with the intention of sequencing, either as an instance (single point in time) or interval. In case no exact time is available, the date/time can be right truncated i.e. all of these are valid ISO8601 compliant times: 2008-01-23T19:23:10+00:00; 2008-01-23T19:23:10; 2008-01-23; 2008-01; 2008.
altitudeThe altitude of the sample is the vertical distance between Earth's surface above Sea Level and the sampled position in the air.
geographic_location_latitudeThe geographical origin of the sample as defined by latitude. The values should be reported in decimal degrees and in WGS84 system
geographic_location_longitudeThe geographical origin of the sample as defined by longitude. The values should be reported in decimal degrees and in WGS84 system
broad_scale_environmental_contextReport the major environmental system the sample or specimen came from. The system(s) identified should have a coarse spatial grain, to provide the general environmental context of where the sampling was done (e.g. in the desert or a rainforest). We recommend using subclasses of EnvO’s biome class: http://purl.obolibrary.org/obo/ENVO_00000428. EnvO documentation about how to use the field: https://github.com/EnvironmentOntology/envo/wiki/Using-ENVO-with-MIxS.
local_environmental_contextReport the entity or entities which are in the sample or specimen’s local vicinity and which you believe have significant causal influences on your sample or specimen. We recommend using EnvO terms which are of smaller spatial grain than your entry for "broad-scale environmental context". Terms, such as anatomical sites, from other OBO Library ontologies which interoperate with EnvO (e.g. UBERON) are accepted in this field. EnvO documentation about how to use the field: https://github.com/EnvironmentOntology/envo/wiki/Using-ENVO-with-MIxS.
environmental_mediumReport the environmental material(s) immediately surrounding the sample or specimen at the time of sampling. We recommend using subclasses of 'environmental material' (http://purl.obolibrary.org/obo/ENVO_00010483). EnvO documentation about how to use the field: https://github.com/EnvironmentOntology/envo/wiki/Using-ENVO-with-MIxS . Terms from other OBO ontologies are permissible as long as they reference mass/volume nouns (e.g. air, water, blood) and not discrete, countable entities (e.g. a tree, a leaf, a table top).
elevationThe elevation of the sampling site as measured by the vertical distance from mean sea level.
amount_or_size_of_sample_collectedThe total amount or size (volume (ml), mass (g) or area (m2) ) of sample collected.
size_fraction_selectedFiltering pore size used in sample preparation e.g. 0-0.22 micrometer
geographic_location_country_and_or_seaThe geographical origin of where the sample was collected from, with the intention of sequencing, as defined by the country or sea name. Country or sea names should be chosen from the INSDC country list (http://insdc.org/country.html).
source_material_identifiersA unique identifier assigned to a material sample (as defined by http://rs.tdwg.org/dwc/terms/materialSampleID, and as opposed to a particular digital record of a material sample) used for extracting nucleic acids, and subsequent sequencing. The identifier can refer either to the original material collected or to any derived sub-samples. The INSDC qualifiers /specimen_voucher, /bio_material, or /culture_collection may or may not share the same value as the source_mat_id field. For instance, the /specimen_voucher qualifier and source_mat_id may both contain 'UAM:Herps:14' , referring to both the specimen voucher and sampled tissue with the same identifier. However, the /culture_collection qualifier may refer to a value from an initial culture (e.g. ATCC:11775) while source_mat_id would refer to an identifier from some derived culture from which the nucleic acids were extracted (e.g. xatc123 or ark:/2154/R2).
experimental_factorExperimental factors are essentially the variable aspects of an experiment design which can be used to describe an experiment, or set of experiments, in an increasingly detailed manner. This field accepts ontology terms from Experimental Factor Ontology (EFO) and/or Ontology for Biomedical Investigations (OBI). For a browser of EFO (v 2.95) terms, please see http://purl.bioontology.org/ontology/EFO; for a browser of OBI (v 2018-02-12) terms please see http://purl.bioontology.org/ontology/OBI. E.g. time series design [EFO:EFO_0001779]
taxonomic_classificationMethod used for taxonomic classification, along with reference database used, classification rank, and thresholds used to classify new genomes. Expected values are: classification method, database name, and other parameters e.g. vConTACT vContact2 (references from NCBI RefSeq v83, genus rank classification, default parameters)
reference_for_biomaterialPrimary publication if isolated before genome publication; otherwise, primary genome report. Mandatory for MIGS of bacteria and archaea.
sample_material_processingA brief description of any processing applied to the sample during or after retrieving the sample from environment, or a link to the relevant protocol(s) performed.
nucleic_acid_extractionA link to a literature reference, electronic resource or a standard operating procedure (SOP), that describes the material separation to recover the nucleic acid fraction from a sample
nucleic_acid_amplificationA link to a literature reference, electronic resource or a standard operating procedure (SOP), that describes the enzymatic amplification (PCR, TMA, NASBA) of specific nucleic acids
library_sizeTotal number of clones in the library prepared for the project
library_reads_sequencedTotal number of clones sequenced from the library
library_vectorCloning vector type(s) used in construction of libraries
library_screening_strategySpecific enrichment or screening methods applied before and/or after creating clone libraries in order to select a specific group of sequences
assembly_softwareTool(s) used for assembly, including version number and parameters in the format {software};{version};{parameters} e.g. metaSPAdes;3.11.0;kmer set 21,33,55,77,99,121, default parameters otherwise
adaptersAdapters provide priming sequences for both amplification and sequencing of the sample-library fragments. Both adapters should be reported; in uppercase letters
depthThe vertical distance below local surface, e.g. for sediment or soil samples depth is measured from sediment or soil surface, respectively. Depth can be reported as an interval for subsurface samples.