3-mers AAA 3' UTR

[CSV file]

Density of motif

t-test: p=1.09362e-32

Neutral set average density: 0.0505649

Different set average density: 0.0373986

Presence of motif

           motif_present
gene_set    absent present
  different     10     984
  neutral       15    1938

Fisher's exact test: p=0.527269

Binomial GLM: p=0.506677

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

Deviance Residuals: 
    Min       1Q   Median       3Q      Max  
-3.1206   0.1242   0.1242   0.1422   0.1422  

Coefficients:
              Estimate Std. Error z value Pr(>|z|)    
(Intercept)     4.8614     0.2592  18.757   <2e-16 ***
differentTRUE  -0.2723     0.4101  -0.664    0.507    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

(Dispersion parameter for binomial family taken to be 1)

    Null deviance: 288.27  on 2946  degrees of freedom
Residual deviance: 287.84  on 2945  degrees of freedom
AIC: 291.84

Number of Fisher Scoring iterations: 7

Binomial GLM adjusted for length: p=0.00201145

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

Deviance Residuals: 
    Min       1Q   Median       3Q      Max  
-3.4770   0.0271   0.0867   0.1538   0.5032  

Coefficients:
              Estimate Std. Error z value Pr(>|z|)    
(Intercept)    2.98007    0.40626   7.335 2.21e-13 ***
length         0.01770    0.00412   4.297 1.73e-05 ***
differentTRUE -1.33119    0.43101  -3.089  0.00201 ** 
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

(Dispersion parameter for binomial family taken to be 1)

    Null deviance: 288.27  on 2946  degrees of freedom
Residual deviance: 249.30  on 2944  degrees of freedom
AIC: 255.3

Number of Fisher Scoring iterations: 10