I've released new versions of buccaneer (model building) and sequins
(validation) today, with some fixes and new features:
buccaneer 0.7.5 new features:
Substantially improved sequencing algorithm. This uses a full
sequence-alignment type calculation to get the best fit of the expected
sequence against the electron density, allowing multiple insertions and
deletions. This leads to a slight increase in the amount of chain
sequenced, but more importantly much longer sequenced chains in the
final model. I've got one test case at 2.6A where over 3 cycles
buccaneer builds an unbroken chain of over 300 residues. This is the
same code which is incorporated in sequins.
http://www.ysbl.york.ac.uk/~cowtan/buccaneer/buccaneer.html
sequins 0.1.0 new features:
A number of stability fixes, and in addition the option to choose
whether the side chains are omitted before calculating the map, if
experimental phasing isn't available. Side chain omit turns out to be
unnecessary when the data is good, and can be harmful at low resolutions
- it is possible to detect serious sequencing errors even without it.
http://www.ysbl.york.ac.uk/~cowtan/sequins/sequins.html
Both programs come with automatic installation scripts and graphical
user interface.
Kevin
