If you believe it to be rea density and not an artefact, this could be a wee PEG molecule, for instance...
Artem On Jan 19, 2012 4:34 AM, "Tim Gruene" <t...@shelx.uni-ac.gwdg.de> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Dear :), > > electron density near special positions often bears some artefacts > because it is apparently difficult to calculate, i.e. the blob maybe > just some noise enhanced by its proximity near that two-fold axis. > > Cheers, > Tim > > On 01/19/2012 07:44 AM, stacy William wrote: > > Dear All, > > I am working on plant proteins and solved a structure, there is an extra > > density which i cannot fix . I am attaching the coot image , can anybody > > suggest me what it could be > > > > THANKS :) > > > > - -- > - -- > Dr Tim Gruene > Institut fuer anorganische Chemie > Tammannstr. 4 > D-37077 Goettingen > > GPG Key ID = A46BEE1A > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.10 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iD8DBQFPF/G+UxlJ7aRr7hoRAhtrAKDOEovVhREADSRXYq1XOlSZK9sm7gCgl2C9 > o4n3V/qxH41XxPlYDxw+fgU= > =FjSB > -----END PGP SIGNATURE----- >
