Human Intervention Required TM1387 2636534 MB3864A Real space molecular replacement, combining MR/MAD TM1387, 2.6 A, 8 mols/asu, homolog to 1n3b; MB3864A, 2.7 A, 3 mols/asu, homolog to 1vpm Combining low resolution phases with high resolution data from different crystals Non-routine NCS averaging 2636534, 4 mols/asu, 2.7 A, intertwined monomers Twinning MM4090A, p21 twinning and space group ambiguities PC06751C Many heavy atoms PC06751C, 120 Se, 2.7 A, 6 MM4090A