Fields, Christopher J | 3 Nov 03:08 2012

Re: Structure::IO::pdb update needed to comply with PDB file format specification change

On Nov 2, 2012, at 7:13 PM, Scott Markel <Scott.Markel <at>> wrote:

> In tracking down a regression test failure we discovered that the Structure::IO::pdb module is out of
date relative to the PDB file format specification (  PDB now writes
out to column 79, while is still using the old line length of 71.  Our regression failure was caused by
a reformatting of 1CRN; journal titles started getting truncated.
> Some of the Perl lines are really simple, e.g.,
> 	$keywds = $self->_read_PDB_singlecontline("KEYWDS","11-70",\$buffer);
> with others being just a little more detailed, e.g.,
> 	my ($rec, $subr, $cont, $rol) = unpack "A6 x6 A4 A2 x1 A51", $_;
> It doesn't look like has changed in about 1.5 years.  Is there a current module owner?  Or someone else
working on this?

No one has really taken ownership, so as far as I'm concerned it's open.  Any objections?

> If not, we're willing to either compile a list of needed changes (walking through the PDB file format
specification and comparing the corresponding column indices in or provide a new version of the
entire file.  Please let us know which is preferred.

A new version of the file is fine if you have someone who can work on it.  We would also like to change relevant
tests and documentation if there is time.

> Scott
> Scott Markel, Ph.D.
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Thanks Scott!