Hello all, 1) I have to superimpose two protein structures based on sequence matching say prot1 and prot2. Precisely matchmaker. My prot1 is a cryo electron microscopy structure, the structure is not continuous, it has missing residues and hence its pdb contains 3 Chains. My prot2 is a crystal structure, having one chain. I need your suggestion in superimposing these two structure wherever the sequences are matching. What i tried: I opened pro1 pdb and changed all chain names as A ( it contains chain A,B,C). Then i tried to superimpose with prot2, but matchmaker doesn work. 2) when i open molecules one by one, i need all the molecules appear in the center of the chimera window. How to set this in chimera. After opening the first pdb, when i open the second one, it is invisible. Thanks, Bala