Hi, Last couple of times I asked myself the same question ("what does it look like?") I used ssm (or PDBeFold as seems to be called now). http://www.ebi.ac.uk/msd-srv/ssm/ HTH, Fred. <Liu Zhao > wrote: > The structure of my protein is as shown as the purple one. Another one > ,as shown as green,is homologous .But the structure of my protein > can't be obtained by using molecular replacement. And both structures > have much different, especially in B chain. If my structure is a new > one? thank you for help. > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------ >