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

[CSV file]

Density of motif

t-test: p=1.16185e-16

Neutral set average density: 0.0977061

Different set average density: 0.0788732

Presence of motif

           motif_present
gene_set    absent present
  different     69     925
  neutral      102    1851

Fisher's exact test: p=0.0665455

Binomial GLM: p=0.0599698

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

Deviance Residuals: 
    Min       1Q   Median       3Q      Max  
-2.4299   0.3275   0.3275   0.3793   0.3793  

Coefficients:
              Estimate Std. Error z value Pr(>|z|)    
(Intercept)     2.8985     0.1017  28.500   <2e-16 ***
differentTRUE  -0.3028     0.1610  -1.881     0.06 .  
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

(Dispersion parameter for binomial family taken to be 1)

    Null deviance: 1305.5  on 2946  degrees of freedom
Residual deviance: 1302.0  on 2945  degrees of freedom
AIC: 1306

Number of Fisher Scoring iterations: 5