samtools depad [-SsCu1] [-T ref.fa] [-o output] in.bam Converts a BAM aligned against a padded reference to a BAM aligned against the depadded reference. The padded reference may contain verbatim "*" bases in it, but "*" bases are also counted in the reference numbering. This means that a sequence base-call aligned against a reference "*" is considered to be a cigar match ("M" or "X") operator (if the base-call is "A", "C", "G" or "T"). After depadding the reference "*" bases are deleted and such aligned sequence base-calls become insertions. Similarly transformations apply for deletions and padding cigar operations.
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