> Hello Toni
> Your PDB file is malformed.

Correct.

> Atom names must be left-aligned to column
> 14:
> ATOM      1  N   GLY     1       4.794  -0.966  -4.193  1.00 99.00
> ATOM      2  CA  GLY     1       3.792   0.001  -4.433  1.00 99.00
> ATOM      3  C   GLY     1       2.880   0.006  -3.283  1.00 99.00
> ATOM      4  O   GLY     1       2.357  -1.002  -2.940  1.00 99.00

It appears to be left-aligned, but in fact it is not.

The element symbol must be right-aligned in a two character column at 13
and 14. For single character element symbols there is a space in column
13.

The 'A' in an alpha carbon is a separate column.

Jmol's rules are compliant with the PDB spec and are more strict than
RasMol/Chime.

Following the rules allows one to distinguish between calcium and an alpha
carbon.

An alpha carbon followed by a calcium:

ATOM      2  CA  GLY     1       3.792   0.001  -4.433  1.00 99.00
ATOM      3 CA   UNK     1       5.792   1.001  -5.433  1.00 99.00

The PDB spec is:
* Six characters (columns) are reserved for atom names, assigned as follows.

   COLUMN     VALUE
   -----------------------------------------------------------------------
   13 - 14    Chemical symbol - right justified, except for hydrogen atoms
   15         Remoteness indicator (alphabetic)

   16         Branch designator (numeric)

   77 - 78    Element symbol, right-justified


Jmol will use columns 77 & 78 if it contains a valid element symbol ...
this is recommended.



Miguel



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