DDBJ will start accepting TLS data from December 2017 or later.
Since 2016, INSDC has accepted bulk sequence data including 16S rRNA or some other targeted loci mainly to be clustered into operational taxonomic unit as Targeted Locus Study (TLS) data type.
With regard to comprehensive analysis of marker sequences by using NGS, TLS data submission is not required in many cases, because it is reproducible if the original reads are submitted to DDBJ Read Archive.
So, please consider if you have to submit TLS data to DDBJ or not.
You can submit TSA data to DDBJ through Mass Submission System (MSS).
Sample flat file
LOCUS TZZZ01000001 800 bp mRNA linear TLS 15-NOV-2017 DEFINITION TLS: Uncultured bacterium OTU:MS213 gene for 16S ribosomal RNA, partial sequence. ACCESSION TZZZ01000001 VERSION TZZZ01000001.1 DBLINK BioProject:PRJDA43211 Sequence Read Archive: DRR800001 BioSample: SAMD98765439 KEYWORDS TLS; Targeted Locus Study; ENV. SOURCE uncultured bacterium ORGANISM uncultured bacterium Bacteria; environmental samples. REFERENCE 1 (bases 1 to 800) AUTHORS Mishima,H. and Shizuoka,T. TITLE Direct Submission JOURNAL Submitted (30-SEP-2017) to the DDBJ/EMBL/GenBank databases. Contact:Hanako Mishima National Institute of Genetics, DNA Data Bank of Japan; Yata 1111, Mishima, Shizuoka 411-8540, Japan REFERENCE 2 AUTHORS Mishima,H., Shizuoka,T. and Fuji,I. TITLE Metagenomic Taxonomy Profile in Sea Water JOURNAL TLS Biol 15, 161-170 (2017) COMMENT ##Assembly-Data-START## Assembly Method :: FLASH v. 2015 Sequencing Technology :: Illumina ##Assembly-Data-END## FEATURES Location/Qualifiers source 1..301 /altitude="-20 m" /country="Pacific Ocean" /db_xref="taxon:77133" /environmental_sample /isolation_source="marine water" /lat_lon="29.3116 N 148.6778 E" /mol_type="genomic DNA" /organism="uncultured bacterium" /submitter_seqid="OTU:MS213" rRNA <1..>301 /product="16S ribosomal RNA" BASE COUNT 75 a 59 c 102 g 65 t ORIGIN 1 cagtcgccgc gggaatacgg agggggctag cgttgttcgg aattactggg cgtaaagcgc : -- The rest of nucleotide sequence is omitted -- : //