[ccp4bb] Non-sequential residue numbering?

[Todd Geders]

Hello all,

I have a structure from a non-natural fusion of the truncated C- 
terminus of one protein with the truncated N-terminus of another.  For  
the deposition, we want to keep the numbering as found in the separate  
proteins.  It looks something like this:

              1         12
              |          |
....HWVCKDIALLMCFFLEEMSEEP....
    |        |
  754      763

At no point is there an overlap in numbering (i.e. the N-terminal  
residue number is higher than the C-terminal residue number).

Is this numbering scheme supported by the PDB standard?  Thus far, all  
of the software seems to handle it (refmac, Coot, PyMOL, pdb_extract,  
PDB precheck & validation, etc).

Can anyone see a reason to not deposit with this non-sequential  
residue numbering?

~Todd