> I have a quick question for you. > I am trying to look at the structure of the tetranucleosome (pdb file 1zbb). > However, the structure is only composed by 2 nucleosomes. Is there a way to duplicate the image to 4?
Based on the BIOMT records in the PDB file: REMARK 350 BIOMOLECULE: 1 REMARK 350 APPLY THE FOLLOWING TO CHAINS: I, J, A, B, C, D, E, F, G, REMARK 350 H, a, b, c, d, e, f, g, h REMARK 350 BIOMT1 1 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 1 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 1 0.000000 0.000000 1.000000 0.00000 REMARK 350 BIOMT1 2 -1.000000 0.000000 0.000000 127.67500 REMARK 350 BIOMT2 2 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 2 0.000000 0.000000 -1.000000 237.12600 You can create the biological unit as follows: # load the PDB file fetch 1zbb, async=0 # create a copy create 1zbb_2, 1zbb # transform the copy according to the second matrix above alter_state 1, 1zbb_2, (x,y,z)=(127.675-x, y, 237.126-z) Cheers, Warren
