promoter binding affinity calculations on the genome based on PBMs and EMA for CCA1 and LUX

The promoter regions for clock genes that present a ChIP-seq signal were extracted from TAIR10 using costume python scripts using the gene list for Kamioka et al CCA1 or Daphne Ezer et al for LUX. The promoter was considered from the TSS of the gene until the annotated end of the upstream gene. Then, this region was scanned using the Energy Matrix derived using EMA working as a classifier for bound or unbound. After classification the calibrated PBM data calibrated using in vitro data was used for assigning an dissociation constant (Kd). This was performed by inverting Ka=1/Kd and adding up for the full promoter the affinity contribution of each 8-mere. The resulting total Ka was then inverted once more to derive a total dissociation constant, which we report in Supplementary table X. The z-scores for each promoter were calculated by concatenating the genome and sampling randomly regions of the same size of the promoter 1,000. Total dissociation constants for each of the sample regions as was done for their cognate promoter region. The values were ln-transformed and the z-score calculated accordingly with (x-mu)/sigma.

SEEK ID: https://fairdomhub.org/assays/2489

Modelling analysis

Projects: Millar group

Investigation: Absolute units for proteins in Arabidopsis clock models up to U2020.5

Study: Estimating DNA-binding affinities for Arabidopsis proteins

Assay position:

Biological problem addressed: Model Analysis Type

Organisms: No organisms

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Created: 25th Aug 2024 at 13:45

Last updated: 19th Dec 2024 at 11:28

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