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What does Prokka do?
Prokka is a software tool that can be used to annotate bacterial, archaeal and viral genomes quickly, generating standard output files in GenBank, EMBL and gff formats.
What is Prokka annotation?
Prokka is a software tool to rapidly annotate genes and identify coding sequences in prokaryotic genomes. It uses de novo assembly FASTA files as an input that can be generated by the SPAdes Genome Assembler, Velvet de novo Assembly, or DNAStar Assemble bacteria de novo BaseSpace Apps.
How long is Prokka?
Here we introduce Prokka, a command line software tool to fully annotate a draft bacterial genome in about 10 min on a typical desktop computer. It produces standards-compliant output files for further analysis or viewing in genome browsers.
How do I read a GFF file?
GFF Viewer can be opened with the context menu option in the File Manager when selecting a GFF file and using the context menu option Show in GFF Viewer from the table when exploring a GFF file.
Is GFF and GFF3 same?
GFF is a standard file format for storing genomic features in a text file. GFF stands for Generic Feature Format. GFF files are plain text, 9 column, tab-delimited files.
What is Genbank format?
The Genbank format allows for the storage of information in addition to a DNA/protein sequence. It holds much more information than the FASTA format. Formats similar to Genbank have been developed by ENA (EMBL format) and by DDBJ (DDBJ format).
How does the process of gene annotation identify gene?
In the process of annotation, decisions are made as to which particular DNA sequences within a genome contain biological information. This involves identifying features in the DNA sequences and, in many cases, determining which of these features are likely to be genes.
What makes a FASTA file different from a GFF3 file?
Fasta files contain nucleotide or peptide sequences (nucleotides in the case of bacterial/archaeal genomes). Files in GFF3 format, on the other hand, contain annotations, a list of intervals corresponding to genes or other genomic features. Optionally, Fasta sequences can be appended to the end of a GFF3 file (separated by a ##FASTA directive).
Is the prokka annotation in GFF3 format?
This is the master annotation in GFF3 format, containing both sequences and annotations. It can be viewed directly in Artemis or IGV. This is a standard Genbank file derived from the master .gff. If the input to prokka was a multi-FASTA, then this will be a multi-Genbank, with one record for each sequence.
How is prokka a multi-GenBank protein FASTA file?
If the input to prokka was a multi-FASTA, then this will be a multi-Genbank, with one record for each sequence. Nucleotide FASTA file of the input contig sequences. Protein FASTA file of the translated CDS sequences.
What do you need to know about prokka tag format?
Type prokka –listdb to confirm they are recognised. Prokka understands two annotation tag formats, a plain one and a detailed one. The plain one is a standard FASTA-like line with the ID after the > sign, and the protein /product after the ID (the “description” part of the line):