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What is a consensus file?
In molecular biology and bioinformatics, the consensus sequence (or canonical sequence) is the calculated order of most frequent residues, either nucleotide or amino acid, found at each position in a sequence alignment. Such information is important when considering sequence-dependent enzymes such as RNA polymerase.
What is the difference between a SAM file and a BAM file?
SAM files are human-readable text files, and BAM files are simply their binary equivalent, whilst CRAM files are a restructured column-oriented binary container format. BAM files are typically compressed and more efficient for software to work with than SAM.
How do you find a consensus sequence?
A consensus sequence is determined by aligning many nucleotide (or protein) sequences that share a common function, then determining the most commonly expressed nucleotide (or amino acid) at each position. Often conserved sequences reflect a common function or binding domain.
What is a BAM file sequencing?
A BAM file (*. bam) is the compressed binary version of a SAM file that is used to represent aligned sequences up to 128 Mb. Header—Contains information about the entire file, such as sample name, sample length, and alignment method. …
What does a consensus sequence do?
Consensus Sequences A consensus sequence is a sequence of DNA, RNA, or protein that represents aligned, related sequences. The consensus sequence of the related sequences can be defined in different ways, but is normally defined by the most common nucleotide(s) or amino acid residue(s) at each position.
Which of the following is a consensus sequence?
A consensus sequence is a sequence of DNA, RNA, or protein that represents aligned, related sequences. The consensus sequence of the related sequences can be defined in different ways, but is normally defined by the most common nucleotide(s) or amino acid residue(s) at each position.
Is TATA box a consensus sequence?
The TATA box is considered a non-coding DNA sequence (also known as a cis-regulatory element). It was termed the “TATA box” as it contains a consensus sequence characterized by repeating T and A base pairs. Transcription is initiated at the TATA box in TATA-containing genes.
What is a consensus binding sequence?
A consensus sequence is a sequence of DNA, RNA, or protein that represents aligned, related sequences. In DNA molecules, consensus sequences are useful for representing short elements that are binding sites for other molecules. Such elements may be recognized by, for example, proteins in transcriptional control.
How to get consensus sequences from BAM files?
The program takes as input a SAM file (.sam or .sam.gz) resulting from mapping short reads to a reference (the reference sequences can correspond to separate genes for example), then it calculates the consensus sequence from the aligned reads alone. If you have BAM files you will need to convert them first with samtools.
How to get consensus sequences from input SAM files?
The consensus method is the one used by Geneious and described in detail in http://assets.geneious.com/manual/8.1/GeneiousManualse41.html Regions with no coverage are filled with -s (or a different character if specified). Input SAM files don’t need to be sorted.
How to use SAMtools and bcftools to get consensus sequence?
As described in http://samtools.github.io/bcftools/howtos/variant-calling.html, the first two commands mpileup and call determine the variants, the base frequency is taken into account, also mapping quality, base quality, frequency across samples etc. The consensus command then modifies the fasta sequence accordingly. Question answered.
How to get consensus sequence from IgV file?
Given the sorted .bam file, I would like to output a consensus sequence just like the consensus sequence generated in IGV.