2-mers UC 3' UTR

[CSV file]

Density of motif

t-test: p=1.55453e-48

Neutral set average density: 0.0685891

Different set average density: 0.0838143

Presence of motif

           motif_present
gene_set    absent present
  different      4     990
  neutral       60    1893

Fisher's exact test: p=2.7891e-07

Binomial GLM: p=6.96676e-05

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

Deviance Residuals: 
    Min       1Q   Median       3Q      Max  
-3.3213   0.0898   0.2498   0.2498   0.2498  

Coefficients:
              Estimate Std. Error z value Pr(>|z|)    
(Intercept)     3.4516     0.1311  26.322  < 2e-16 ***
differentTRUE   2.0598     0.5179   3.977 6.97e-05 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

(Dispersion parameter for binomial family taken to be 1)

    Null deviance: 616.80  on 2946  degrees of freedom
Residual deviance: 588.18  on 2945  degrees of freedom
AIC: 592.18

Number of Fisher Scoring iterations: 8

Binomial GLM adjusted for length: p=0.127486

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

Deviance Residuals: 
    Min       1Q   Median       3Q      Max  
-3.2781   0.0001   0.0131   0.1246   1.0557  

Coefficients:
               Estimate Std. Error z value Pr(>|z|)    
(Intercept)   -0.847385   0.380352  -2.228   0.0259 *  
length         0.057026   0.006894   8.272   <2e-16 ***
differentTRUE  0.830053   0.544622   1.524   0.1275    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

(Dispersion parameter for binomial family taken to be 1)

    Null deviance: 616.8  on 2946  degrees of freedom
Residual deviance: 395.3  on 2944  degrees of freedom
AIC: 401.3

Number of Fisher Scoring iterations: 11