| D1JBK4 | n/a | 3sqg | M43 | A | 1001 | e3sqgA1 | Alpha-beta plaits | Methyl-coenzyme M reductase subunits | Methyl-coenzyme M reductase subunits | MCR_alpha_N |
| D1JBK4 | n/a | 3sqg | M43 | A | 1001 | e3sqgD1 | Methyl-coenzyme M reductase alpha and beta chain-C | Methyl-coenzyme M reductase alpha and beta chain-C | Methyl-coenzyme M reductase alpha and beta chain-C | MCR_alpha |
| D1JBK4 | n/a | 3sqg | M43 | D | 1001 | e3sqgA1 | Alpha-beta plaits | Methyl-coenzyme M reductase subunits | Methyl-coenzyme M reductase subunits | MCR_alpha_N |
| D1JBK4 | n/a | 3sqg | M43 | D | 1001 | e3sqgA2 | Methyl-coenzyme M reductase alpha and beta chain-C | Methyl-coenzyme M reductase alpha and beta chain-C | Methyl-coenzyme M reductase alpha and beta chain-C | MCR_alpha |
| D1JBK4 | n/a | 3sqg | M43 | D | 1001 | e3sqgD2 | Alpha-beta plaits | Methyl-coenzyme M reductase subunits | Methyl-coenzyme M reductase subunits | MCR_alpha_N |
| D1JBK4 | n/a | 3sqg | M43 | G | 1001 | e3sqgG1 | Methyl-coenzyme M reductase alpha and beta chain-C | Methyl-coenzyme M reductase alpha and beta chain-C | Methyl-coenzyme M reductase alpha and beta chain-C | MCR_alpha |
| D1JBK4 | n/a | 3sqg | M43 | G | 1001 | e3sqgG2 | Alpha-beta plaits | Methyl-coenzyme M reductase subunits | Methyl-coenzyme M reductase subunits | MCR_alpha_N |