3-mers UAA 3' UTR

[CSV file]

Density of motif

t-test: p=3.28326e-51

Neutral set average density: 0.0330517

Different set average density: 0.0242702

Presence of motif

           motif_present
gene_set    absent present
  different      9     985
  neutral       26    1927

Fisher's exact test: p=0.371267

Binomial GLM: p=0.315975

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

Deviance Residuals: 
    Min       1Q   Median       3Q      Max  
-3.0674   0.1349   0.1637   0.1637   0.1637  

Coefficients:
              Estimate Std. Error z value Pr(>|z|)    
(Intercept)     4.3056     0.1974  21.808   <2e-16 ***
differentTRUE   0.3898     0.3887   1.003    0.316    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

(Dispersion parameter for binomial family taken to be 1)

    Null deviance: 379.91  on 2946  degrees of freedom
Residual deviance: 378.84  on 2945  degrees of freedom
AIC: 382.84

Number of Fisher Scoring iterations: 7

Binomial GLM adjusted for length: p=0.169625

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

Deviance Residuals: 
    Min       1Q   Median       3Q      Max  
-3.4530   0.0420   0.1174   0.1954   0.4165  

Coefficients:
               Estimate Std. Error z value Pr(>|z|)    
(Intercept)    2.672434   0.332742   8.032 9.63e-16 ***
length         0.014479   0.003261   4.441 8.97e-06 ***
differentTRUE -0.560586   0.408171  -1.373     0.17    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

(Dispersion parameter for binomial family taken to be 1)

    Null deviance: 379.91  on 2946  degrees of freedom
Residual deviance: 339.16  on 2944  degrees of freedom
AIC: 345.16

Number of Fisher Scoring iterations: 9