# DDBJ — DNA Data Bank of Japan ## Overview The DNA Data Bank of Japan (DDBJ) is Japan's national nucleotide sequence database and the Asian partner in the International Nucleotide Sequence Database Collaboration (INSDC), alongside [[NCBI GEO|NCBI SRA]] (USA) and [[ENA]] / [[EMBL]]-EBI (Europe). DDBJ collects, annotates, and distributes nucleotide sequence data submitted by researchers worldwide, synchronising data daily with its INSDC partners so that a submission to any of the three databases is automatically available from all three. ## DDBJ Services DDBJ operates several specialised archives under a unified submission portal (D-way). The core DDBJ database archives annotated nucleotide sequences, equivalent to GenBank and [[ENA]]. DRA (DDBJ Sequence Read Archive) stores sequencing data at two levels: raw reads in [[FASTQ]] format as the direct sequencer output, and aligned reads in [[SAM-BAM-CRAM]] format after mapping to a reference genome. It is equivalent to NCBI SRA and [[ENA]]. GEA (Genomic Expression Archive) hosts functional genomics data including RNA-seq and microarray datasets, equivalent to [[NCBI GEO]]. JGA (Japanese Genotype-phenotype Archive) provides controlled-access storage for sensitive human genomic and phenotypic data, equivalent to [[EGA]]. ## Connections - Part of: INSDC (with [[NCBI GEO|NCBI SRA]] and [[ENA]] / [[EMBL]]-EBI; see https://www.insdc.org) - Controlled-access equivalent: JGA (equivalent to [[EGA]]) - Open-access expression data: GEA (equivalent to [[NCBI GEO]]) ## Resources - https://www.ddbj.nig.ac.jp - https://ddbj.nig.ac.jp/resource/sra-submission (DRA submission) - https://www.insdc.org (INSDC collaboration overview)