3-mers CCU 50 bases upstrand from poly(A) site

[CSV file]

Density of motif

t-test: p=1.542e-05

Neutral set average density: 0.0053149

Different set average density: 0.00722334

Presence of motif

           motif_present
gene_set    absent present
  different    686     308
  neutral     1506     447

Fisher's exact test: p=2.68712e-06

Binomial GLM: p=2.07757e-06

Call:
glm(formula = motif_present ~ different, family = binomial, data = daf)

Deviance Residuals: 
    Min       1Q   Median       3Q      Max  
-0.8612  -0.7210  -0.7210   1.5308   1.7173  

Coefficients:
              Estimate Std. Error z value Pr(>|z|)    
(Intercept)   -1.21465    0.05386 -22.551  < 2e-16 ***
differentTRUE  0.41388    0.08721   4.746 2.08e-06 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

(Dispersion parameter for binomial family taken to be 1)

    Null deviance: 3353.9  on 2946  degrees of freedom
Residual deviance: 3331.7  on 2945  degrees of freedom
AIC: 3335.7

Number of Fisher Scoring iterations: 4