hi, I successfully aligned and analyzed my RNA-Seq data using Hisat2 and StringTIe and DESeq2 with the La_Amiga3_1 genome (white lupin) from NCBI to map transcripts. Beginner's luck. Now I am trying to do the exact same thing using the CNRS_Lalb genome (also white lupin on NCBI), and when I get to the first StringTIe step, I get "Error: no valid ID found for GFF record". I have looked at both the genome GTF files, and the first field (chromosome id) looks great (cut -f 1 *.gtf | sort | uniq) and they have a different name for the chromosomes, but look fine. I don't think that is the problem, and am looking for more hints as to what this means - I did read the StringTie manual but need more help. thanks very much, K
3 answers
My guess is its those lines with transcript_id=="", they don't contain a valid ID, and so StringTie is complaining. Its always a bit of the worry to work out what to do with a the transcript_id field on gene lines in a GTF file. The orignal GTF format didn't contain gene lines, but they appear to have crept in at some point. The ENSEMBL files just don't have a transcript_id field on their gene lines, but i bet that trips StringTie up as well.
For for what to do: I recommend just removing the gene lines. They are not necessary anyway. Something like:
awk '$3 != "gene" ' my_annotation.gtf > my_annotation_no_genes.gtf
Hi! I also suffer the same problem,and i don't know how to fix it
You can try AGAT
Input:
WOCE01000065.1 Genbank gene 90 241 . - . gene_id "Lalb_Chr00c40g0409271"; transcript_id ""; gbkey "Gene"; gene_biotype "ncRNA"; locus_tag "Lalb_Chr00c40g0409271";
WOCE01000065.1 Genbank exon 90 241 . - . gene_id "Lalb_Chr00c40g0409271"; transcript_id "Lalb_Chr00c40g0409271"; gbkey "ncRNA"; locus_tag "Lalb_Chr00c40g0409271"; product "hypothetical ncRNA"; exon_number "1";
WOCE01000065.1 Genbank gene 417 575 . - . gene_id "Lalb_Chr00c40g0409281"; transcript_id ""; gbkey "Gene"; gene_biotype "ncRNA"; locus_tag "Lalb_Chr00c40g0409281";
WOCE01000065.1 Genbank exon 417 575 . - . gene_id "Lalb_Chr00c40g0409281"; transcript_id "Lalb_Chr00c40g0409281"; gbkey "ncRNA"; locus_tag "Lalb_Chr00c40g0409281"; product "hypothetical ncRNA"; exon_number "1"
Remove transcript_id attribute to gene feature:
agat_sp_manage_attributes.pl --gff test.gtf -p gene --att transcript_id -o test.gff
Output:
##gff-version 3
WOCE01000065.1 Genbank gene 90 241 . - . ID=nbis-gene-1;gbkey=Gene;gene_biotype=ncRNA;gene_id=Lalb_Chr00c40g0409271;locus_tag=Lalb_Chr00c40g0409271
WOCE01000065.1 Genbank RNA 90 241 . - . ID=Lalb_Chr00c40g0409271;Parent=nbis-gene-1;gbkey=Gene;gene_biotype=ncRNA;gene_id=Lalb_Chr00c40g0409271;locus_tag=Lalb_Chr00c40g0409271
WOCE01000065.1 Genbank exon 90 241 . - . ID=exon-1;Parent=Lalb_Chr00c40g0409271;exon_number=1;gbkey=ncRNA;gene_id=Lalb_Chr00c40g0409271;locus_tag=Lalb_Chr00c40g0409271;product=hypothetical ncRNA;transcript_id=Lalb_Chr00c40g0409271
WOCE01000065.1 Genbank gene 417 575 . - . ID=nbis-gene-2;gbkey=Gene;gene_biotype=ncRNA;gene_id=Lalb_Chr00c40g0409281;locus_tag=Lalb_Chr00c40g0409281
WOCE01000065.1 Genbank RNA 417 575 . - . ID=Lalb_Chr00c40g0409281;Parent=nbis-gene-2;gbkey=Gene;gene_biotype=ncRNA;gene_id=Lalb_Chr00c40g0409281;locus_tag=Lalb_Chr00c40g0409281
WOCE01000065.1 Genbank exon 417 575 . - . ID=exon-2;Parent=Lalb_Chr00c40g0409281;exon_number=1;gbkey=ncRNA;gene_id=Lalb_Chr00c40g0409281;locus_tag=Lalb_Chr00c40g0409281;product=hypothetical ncRNA;transcript_id=Lalb_Chr00c40g0409281
Convert into GTF agat_convert_sp_gff2gtf.pl --gff test.gff -o --gff test_clean.gtf
Output:
##gtf-version 3
WOCE01000065.1 Genbank gene 90 241 . - . gene_id "Lalb_Chr00c40g0409271"; ID "nbis-gene-1"; gbkey "Gene"; gene_biotype "ncRNA"; locus_tag "Lalb_Chr00c40g0409271";
WOCE01000065.1 Genbank transcript 90 241 . - . gene_id "Lalb_Chr00c40g0409271"; transcript_id "Lalb_Chr00c40g0409271"; ID "Lalb_Chr00c40g0409271"; Parent "nbis-gene-1"; gbkey "Gene"; gene_biotype "ncRNA"; locus_tag "Lalb_Chr00c40g0409271"; original_biotype "rna";
WOCE01000065.1 Genbank exon 90 241 . - . gene_id "Lalb_Chr00c40g0409271"; transcript_id "Lalb_Chr00c40g0409271"; ID "exon-1"; Parent "Lalb_Chr00c40g0409271"; exon_number "1"; gbkey "ncRNA"; locus_tag "Lalb_Chr00c40g0409271"; product "hypothetical ncRNA";
WOCE01000065.1 Genbank gene 417 575 . - . gene_id "Lalb_Chr00c40g0409281"; ID "nbis-gene-2"; gbkey "Gene"; gene_biotype "ncRNA"; locus_tag "Lalb_Chr00c40g0409281";
WOCE01000065.1 Genbank transcript 417 575 . - . gene_id "Lalb_Chr00c40g0409281"; transcript_id "Lalb_Chr00c40g0409281"; ID "Lalb_Chr00c40g0409281"; Parent "nbis-gene-2"; gbkey "Gene"; gene_biotype "ncRNA"; locus_tag "Lalb_Chr00c40g0409281"; original_biotype "rna";
WOCE01000065.1 Genbank exon 417 575 . - . gene_id "Lalb_Chr00c40g0409281"; transcript_id "Lalb_Chr00c40g0409281"; ID "exon-2"; Parent "Lalb_Chr00c40g0409281"; exon_number "1"; gbkey "ncRNA"; locus_tag "Lalb_Chr00c40g0409281"; product "hypothetical ncRNA";
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Can you please post a couple of lines of the GTF file?
sure, thanks:
omg, thanks so much. this enabled me to find a prior post: Ensembl GTF format: isn't the tag "transcript_id" mandatory?
in which Ensembl explains the evolution of GTF format and suggests exactly what you suggest:
"I would recommend removing the gene lines from the gtf file". This gets me back on track so fast, I appreciate it! - Karen