SRP138682 PRJNA444713 Active sludge microbial communities of municipal wastewater-treating anaerobic digesters from Japan – AD_JPNTR3_MetaT metatranscriptome Metatranscriptomes to study the anaerobic wastewater treatment “black-box” in anthropogenic carbon cycling: exploring the uncharted ecological function of uncultured microbial taxa through next-generation sequencing technology JGI Genome Portal http://genome.jgi-psf.org/lookup?keyName=jgiProjectId&keyValue=1132247&app=Info GOLD https://gold.jgi.doe.gov/project?id=Gp0197974