>7C8M_1|Chains A, B[auth C]|Nitrogen-fixing NifU domain protein|Methanothrix thermoacetophila (2224) MIQQTGYSKKVMEHFMNPRNVGVIDDPDGYGKVGNPVCGDLMEIFIKVGDEKIEDIKFRTFGCGAAIATSSMITEMARGKSLEEAMRITRNDVADALDGLPPQKMHCSNLAADALHAAINDYLSKKQKHLEHHHHHH