Welcome to ChromDB

Three types of sequences displays are included in the database: genomic-based (predominantly plant sequences); transcript-based (EST contigs or cDNAs for plants lacking a sequenced genome); and NCBI RefSeq sequences for a variety of model animal organisms. The Gene Record Page for any sequence indicates the type of sequence. Click on the names of the organisms presented below to see examples of these sequences.


Genomic-based Transcript-based RefSeq-based
Corn (Zea mays) Wheat (Triticum aestivum) Zeke (Homo sapiens)

Important Notice for ChromDB Users

Our regular users may have noticed that we are experiencing frequent downtimes for data retrieval and display. We are sorry for this inconvience and hope you will bear with us as we work to solve problems with an aging server. If you experience problems, please contact Emerita Professor Carolyn Napoli (cnapoli@ag.arizona.edu), and she will try to solve them quickly or provide you with a status report. Thank you for your patience.

Community Notice

Membership drive for EPIC, a new epigenetics and epigenomics user community.

EPIC, the Epigenomics of Plants International Consortium, is a new initiative supporting the efforts of the international community studying epigenomics and epigenetics in plants. EPIC is currently funded by a research collaborative network grant from the NSF. The goal of EPIC is to identify key intellectual questions, potentially transformative methodologies, training needs, and infrastructure needs of the epigenomics community and then communicate these needs to funding agencies internationally in order to establish a coordinated plant epigenomics initiative. We invite all individuals interested in the rapidly expanding fields of epigenetics and epigenomics to join in this effort by becoming a member of EPIC. After self-registering at the EPIC website (Visit EPIC), community members will be able to participate in online surveys and discussion groups that will identify the community's priorities and will shape the mission of EPIC. In addition to registering, we ask community members to please spread the word about EPIC, urging friends, colleagues and professional contacts to also register as members of EPIC.

Rob Martienssen, Craig Pikaard, and Doris Wagner