GRASSIUS: a platform for comparative regulatory genomics across the grasses

Area of Science:

• Plant Molecular Biology
• Bioinformatics
• Genomics

Background:

• Transcription factors (TFs) are crucial for gene regulation, controlling spatiotemporal gene expression patterns.
• Understanding gene regulatory networks requires comprehensive data on TFs, their genomic targets, and binding sites.
• Existing resources lack integrated information specifically for grass species.

Purpose of the Study:

• To develop GRASSIUS (Grass Regulatory Information Services), a knowledge-based web resource for grass TFs and gene promoters.
• To integrate information on TF families, phylogenetic relationships, and TFome collections.
• To provide promoter and cis-regulatory element data for key grass species.

Main Methods:

• Development of two linked databases: GrassTFDB for TF information and GrassPROMDB for promoter data.
• Classification of TFs into families and analysis of phylogenetic relationships.
• Linking TF information with promoter data to represent regulatory network architecture.

Main Results:

• GrassTFDB includes TF data from maize, sorghum, sugarcane, and rice, with classification and synonym information.
• GrassTFDB is linked to the grass TFome collection, providing access to TF clones.
• GrassPROMDB contains promoter and cis-regulatory element data for selected grass genes and species.

Conclusions:

• GRASSIUS provides a centralized resource for grass transcription factor and promoter information.
• The integration of GrassTFDB and GrassPROMDB through GrassRegNet is a foundational step towards understanding grass regulatory networks.
• GRASSIUS (www.grassius.org) facilitates research in grass gene regulation and network architecture.