This is a Bioconductor Annotation package with the SILVA SSU RNA database Version 128.1 for use with the metagenomeFeatures package (https://bioconductor.org/packages/release/bioc/html/metagenomeFeatures.html). The release version of the annotation package is available at Bioconductor (https://bioconductor.org). To install the development version of the package: 1. install metagenomeFeatures, this can be done using devtools `install_github("HCBravoLab/metagenomeFeatures")` 2. clone this repository `git clone https://github.com/HCBravoLab/silva128.1MgDb.git` 3. download the database sequence data from `inst/scripts` using `make_silva128.1MgDb.R` script to generate the metadata and database file required for the silva128.1MgDb. 4. install silva128.1, this can be done using devtools `install_local("local/path/silva128.1MgDb")`, replace `local/path` with the path to the downloaded git repo. The metagenomeFeatures package has vignettes demonstrating how to work with MgDb-class formated sequence databases.