design: Amplicon sequencing of Fredericia-433. Sequencing was performed as described in https://doi.org/10.3389/fmicb.2021.669776. {primers: GTGYCAGMAGBNKCGGTVA + RGACTAMNVRGGTHTCTAAT, nucleic acid: DNA, flow cell identifier: KP237, barcoding: UDB-H12, plate-position: 1 F8, barcodes: ATGCGCCCGTAT + ATGCTAACCACG}.