Find Functions For A List Of Gene
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Entering edit mode
10.6 years ago
njs531 ▴ 20

Hi, I'm just started to learn how to analyze RNAseq data. I have done everything up until the differential expression analysis. I used R package "edgeR" which is quite simple to follow as they have examples of case study. Now I have a list of genes that I sorted following their log fold change . My result looks like this .

                       twd          logFC         logCPM      PValue    PValue_fdr

Tb927.4.4670    0.024126445    4.950238554    6.298519468    3.23E-53    9.04E-50
Tb927.8.3630    0.018775214    4.442670862    9.299881422    5.19E-79    2.17E-75
Tb09.160.4310    0.054947744    4.314437112    6.441043897    1.52E-24    8.52E-22
Tb927.8.3650    0.016756885    4.192394821    8.989082116    2.47E-79    2.07E-75
Tb927.8.3560    0.110638812    4.006356514    5.12998029    2.41E-11    2.10E-09
Tb927.8.3620    0.03023286    3.745937149    8.791866075    5.55E-39    6.66E-36
Tb927.6.4970    0.029706571    3.402814705    6.098852272    4.56E-28    3.19E-25

I need to get the possible function for all genes in my list so that I can have a result that looks like this

                                  function                            
Tb927.4.4670    hypothetical protein, conserved                            
Tb927.8.3630    folate transporter, putative,expression site-associated gene 10 (ESAG10) protein, putative                            
Tb09.160.4310    glutamate dehydrogenase (GDH)                            
Tb927.8.3650    folate transporter, putative,expression site-associated gene 10 (ESAG10) protein, putative                            
Tb927.8.3560    DNA repair and recombination helicase protein PIF5 (PIF5)

I tried to use DAVID but not all genes were returned and the result list was sorted differently so I cannot relate to my original DE result i.e. which I sorted according to logFC. Is there a simple web tool that allow me to upload my list of gene and return the function according my list of genes (without being sorted differently ) ? The organism that I'm looking at is T.Brucei.

rnaseq function • 2.9k views
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Entering edit mode
10.6 years ago

just sort your data and join -a the lists

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Entering edit mode
10.6 years ago

Of if you'd rather stay in R, use the data.table package. Convert to data.table, set the 'key' of each data.table to the gene name, and join DT[X] where DT is your edgeR data.table and X is your DAVID data.table.

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