3-mers UAU 3' UTR

[CSV file]

Density of motif

t-test: p=0.00629744

Neutral set average density: 0.0337135

Different set average density: 0.0355535

Presence of motif

           motif_present
gene_set    absent present
  different      9     985
  neutral       98    1855

Fisher's exact test: p=8.95474e-10

Binomial GLM: p=5.55456e-07

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

Deviance Residuals: 
    Min       1Q   Median       3Q      Max  
-3.0674   0.1349   0.3209   0.3209   0.3209  

Coefficients:
              Estimate Std. Error z value Pr(>|z|)    
(Intercept)     2.9407     0.1036  28.371  < 2e-16 ***
differentTRUE   1.7547     0.3505   5.006 5.55e-07 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

(Dispersion parameter for binomial family taken to be 1)

    Null deviance: 919.63  on 2946  degrees of freedom
Residual deviance: 880.06  on 2945  degrees of freedom
AIC: 884.06

Number of Fisher Scoring iterations: 7

Binomial GLM adjusted for length: p=0.187507

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

Deviance Residuals: 
    Min       1Q   Median       3Q      Max  
-4.4060   0.0012   0.0388   0.2170   1.0943  

Coefficients:
               Estimate Std. Error z value Pr(>|z|)    
(Intercept)   -0.654076   0.275968  -2.370   0.0178 *  
length         0.042635   0.004287   9.945   <2e-16 ***
differentTRUE  0.494512   0.375202   1.318   0.1875    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

(Dispersion parameter for binomial family taken to be 1)

    Null deviance: 919.63  on 2946  degrees of freedom
Residual deviance: 617.96  on 2944  degrees of freedom
AIC: 623.96

Number of Fisher Scoring iterations: 10