Zea mays

Zea mays

Data Source wareLab | Taxonomy ID 4577

In the interest of rapid and broad dissemination of data resources to the community, Gramene, in collaboration with Ensembl Plants, is releasing the updated maize B73 RefGen_V4 reference and annotation prior scientific publication in accordance with guidelines set forth by the Toronto agreement for prepublication data sharing (Nature. 2009 461:168). Under these guidelines users are encouraged to use these data to advance their research on individual or small sets of genes, but must respect the rights and responsibilities of the investigators who generated these data to publish on the whole-genome and its analysis.

The underlying assembly and final set of annotations may change until the data has been accepted by GenBank. We are working as rapidly as possible to finalize the assembly and the annotations.

By accessing these data you agree not to publish articles containing whole genome or chromosome scale analyses, including comprehensive analysis of sequence features, such as genes and repeats, or comparative analysis, prior to publication by CSHL and its collaborators. Any redistribution of these data should include the full text of the data use policy.

About Zea mays

Zea mays (maize) has the highest world-wide production of all grain crops, yielding 875 million tonnes in 2012 (http://faostat.fao.org/). Although a food staple in many regions of the world, most is used for animal feed and ethanol fuel. Maize was domesticated from wild teosinte in Central America and its cultivation spread throughout the Americas by Pre-Columbian civilizations. In addition to its economic value, maize is an important model organism for studies in plant genetics, physiology, and development. It has a large genome of of about 2.4 gigabases with a haploid chromosome number of 10 (Schnable et al., 2009; Zhang et al., 2009). Maize is distinguished from other grasses in that its genome arose from an ancient tetraploidy event unique to its lineage.

More information and statistics

Gene annotation

What can I find? Protein-coding and non-coding genes, splice variants, cDNA and protein sequences, non-coding RNAs.

More about this genebuild

Download genes, cDNAs, ncRNA, proteins - FASTA - GFF3

Update your old Ensembl IDs

Comparative genomics

What can I find? Homologues, gene trees, and whole genome alignments across multiple species.

More about comparative analyses

Protein trees

Download alignments (EMF)


What can I find? Short sequence variants.

More about variation in Zea mays

More about variation in Ensembl Plants

Download all variants - GVF - VCF - VEP

Variant Effect Predictor

About this species