MCycDB: a curated database for comprehensively profiling methane cycling processes of environmental microbiomes

Methane is a critical greenhouse gas with significant impacts on environmental and global change. However, CH(4) cycling processes and coupling mechanisms with the biogeochemical cycling of carbon, nitrogen, sulfur and metals in the environment remain elusive. To fill such knowledge gaps, we constructed a manually curated methane cycling database (MCycDB) for comprehensive and accurate analysis of methane cycling microbial communities. MCycDB contains 298 methane cycling gene families covering...