3-mers GAC 3' UTR

[CSV file]

Density of motif

t-test: p=0.00768647

Neutral set average density: 0.00384848

Different set average density: 0.00438948

Presence of motif

           motif_present
gene_set    absent present
  different    360     634
  neutral     1112     841

Fisher's exact test: p=1.26738e-26

Binomial GLM: p=6.26938e-26

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

Deviance Residuals: 
    Min       1Q   Median       3Q      Max  
-1.4252  -1.0613   0.9484   1.2981   1.2981  

Coefficients:
              Estimate Std. Error z value Pr(>|z|)    
(Intercept)   -0.27932    0.04570  -6.112 9.82e-10 ***
differentTRUE  0.84527    0.08027  10.530  < 2e-16 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

(Dispersion parameter for binomial family taken to be 1)

    Null deviance: 4085.4  on 2946  degrees of freedom
Residual deviance: 3971.2  on 2945  degrees of freedom
AIC: 3975.2

Number of Fisher Scoring iterations: 4

Binomial GLM adjusted for length: p=0.0489928

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

Deviance Residuals: 
    Min       1Q   Median       3Q      Max  
-3.2997  -0.8697   0.0660   0.9849   1.8160  

Coefficients:
                Estimate Std. Error z value Pr(>|z|)    
(Intercept)   -1.6421776  0.0791511 -20.747   <2e-16 ***
length         0.0076538  0.0003745  20.438   <2e-16 ***
differentTRUE  0.1859130  0.0944366   1.969    0.049 *  
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

(Dispersion parameter for binomial family taken to be 1)

    Null deviance: 4085.4  on 2946  degrees of freedom
Residual deviance: 3287.6  on 2944  degrees of freedom
AIC: 3293.6

Number of Fisher Scoring iterations: 5