3-mers GUC 3' UTR

[CSV file]

Density of motif

t-test: p=1.70962e-06

Neutral set average density: 0.00602866

Different set average density: 0.00722833

Presence of motif

           motif_present
gene_set    absent present
  different    213     781
  neutral      879    1074

Fisher's exact test: p=1.43753e-37

Binomial GLM: p=1.62527e-34

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

Deviance Residuals: 
    Min       1Q   Median       3Q      Max  
-1.7552  -1.2636   0.6945   1.0936   1.0936  

Coefficients:
              Estimate Std. Error z value Pr(>|z|)    
(Intercept)    0.20036    0.04548   4.405 1.06e-05 ***
differentTRUE  1.09892    0.08969  12.253  < 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: 3885.6  on 2946  degrees of freedom
Residual deviance: 3720.9  on 2945  degrees of freedom
AIC: 3724.9

Number of Fisher Scoring iterations: 4

Binomial GLM adjusted for length: p=0.0262695

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

Deviance Residuals: 
    Min       1Q   Median       3Q      Max  
-4.4883  -0.8608   0.2118   0.8150   1.7724  

Coefficients:
               Estimate Std. Error z value Pr(>|z|)    
(Intercept)   -1.698968   0.093171 -18.235   <2e-16 ***
length         0.012456   0.000595  20.936   <2e-16 ***
differentTRUE  0.241356   0.108611   2.222   0.0263 *  
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

(Dispersion parameter for binomial family taken to be 1)

    Null deviance: 3885.6  on 2946  degrees of freedom
Residual deviance: 2823.1  on 2944  degrees of freedom
AIC: 2829.1

Number of Fisher Scoring iterations: 6