To the BAR Homepage The Bio-Analytic Resource Expression Angler

If this program proves useful to your research, please cite Toufighi et al., 2005, Plant J. 43:153-163. Thank you!

This program will calculate the correlation coefficients for expression for all gene expression vectors as compared to the one for the AGI ID or gene name you enter below. A file will be created containing the expression data and the correlation coefficients that meet your cut-off criterion, or specified number of hits. The data sets used by this tool come from the Bio-Analytic Resource, NASCArrays, the AtGenExpress Consortium's Tissue, Abiotic Stress, Pathogen or Hormone compendia, and other compendia compiled by the BAR curators. All contain gene expression data for ~22000 Arabidopsis genes generated using the ATH1 Affymetrix Whole Genome GeneChip. Click here for instructions in a new window

• Simply enter the AGI ID or gene name that you are interested in into the box below,
• and, if desired, select different Pearson correlation coefficient (r-value) cutoffs. Click here for info on the Pearson correlation coefficient in a new window
• Then click Submit and wait about 1 minute.

Calculate Pearson Correlation Coefficient of each expression vector to the one belonging to:

(enter AGI ID, e.g. At3g27340, or gene alias, e.g. ABI3)

Select an r-value cutoff range:   

Or, regardless of r-value, just return:

-
the top 25, 50 or 100 hits
or bottom 25, 50 or 100 hits (potentially anti-correlated)
Choose the number of best (or worst) correlated genes you'd like to see or optionally enter a lower and upper r-value. The highest the r-value can be is 1, and that means that two vectors are a perfect match. Zero is no match, and -1 is a perfect anti-correlation, i.e. the expression response is exactly opposite to that of your gene of interest. The default lower r-value cutoff is 0.75, and the default upper r-value cutoff is 1.00. A tighter r-value range will result in smaller output files.

Search in: or Upload your own file to angle in: or Specify data sets/vector with:

See an example file here. Click here for instructions in a new window
Subselect and Custom Bait Page*

*If you want to select various experiments in any of these data sets in which to angle, or to design your own bait, go to the Subselect and Custom Bait Page Click here for instructions in a new window. To use subselection feature with your own data set, perform one round of angling from this page - upload your own file, of course, and be sure to note its identifier on the output page - then go to then Subselect and Custom Bait Page. We will store you data file, with an anonymous identifier, for one day only.