Sequence Manipulation Utilities R package seqmagick version 0.1.8 Tools for reading and writing biological sequences in multiple formats, including 'FASTA', 'PHYLIP', 'CLUSTAL', 'STOCKHOLM', 'MEGA' and 'GenBank'. Supports interleaved and sequential layouts where applicable, converts between formats, and manipulates sequence sets (e.g., filtering by patterns and computing consensus sequences from alignments). Also includes functions to download nucleotide records from NCBI by accession. Software Depends: R (>= 4.1.0) Imports: Biostrings, magrittr, stats, utils, yulab.utils (> 0.1.6) Suggests: knitr, rmarkdown, GenomicAlignments, GenomicRanges, IRanges, muscle, Rsamtools, prettydoc Guangchuang Yu <guangchuangyu@gmail.com> Comprehensive R Archive Network (CRAN) Guangchuang Yu [aut, cre] (ORCID: <https://orcid.org/0000-0002-6485-8781>) Artistic-2.0 2026-01-31 application/tgz https://CRAN.R-project.org/package=seqmagick doi:10.32614/CRAN.package.seqmagick