PDB/UniProt Info retrieves sequence and structure annotations for
Protein Data Bank (PDB) entries using a Web service provided by the
Sequences are displayed in Multalign Viewer, and feature annotations from
are mapped onto the sequences as
fetching UniProt data
There are several ways to start
PDB/UniProt Info, a tool in the Sequence category.
It is also available as the
info... function in the
The top part of the initial dialog lists the PDB chains
currently open in Chimera.
One or more chains can be chosen with the left mouse button.
Choosing a chain uses its PDB ID to look up information at the RCSB PDB.
This information is fetched as an XML file, which can be cached and
reused as needed depending on the
and whether the option to Ignore any cached data is checked.
A dialog will appear for entering the ID code if it cannot be
determined automatically. If the chain does not correspond to an
entry in the PDB, no information can be retrieved.
Other aspects of
can be controlled in
- Structure annotations.
For valid PDB entries, the bottom part of the initial dialog will show
entry title, primary literature citation, structure determination method,
source organism, and release date.
One or more entries can be chosen in the bottom part of the dialog.
Clicking Show PubMed page will display (in a browser window)
the primary citation abstract at
PubMed for each chosen entry.
- Sequence annotations.
Additional windows will appear for showing sequence feature annotations from
UniProt, if available.
Not all PDB chains are annotated with a UniProt identifier, and a given
PDB entry may contain both chains with and without UniProt identifiers.
For each chain with a UniProt identifier:
- the amino acid sequence from UniProt will be displayed in the
tool (also known as Multalign Viewer),
numbered according to the structure
- the UniProt sequence features will be listed as
in the Multalign Viewer
Browser; this dialog controls the display of regions in the
window. Full details are in the
Browser documentation, but briefly:
- any parts of the sequence not present in the structure will be
shown as a pinkish outline region named missing structure...
- making a region Active
the corresponding structure residues for subsequent operations with the
(in the example, the LDL receptor binding region was selected,
its atoms/bonds were shown, it was colored cyan and then
by heteroatom, and then the selection was cleared)
- making a region Shown displays it in the
- region colors can be changed by clicking the square
and using the
one column of wells is for interior colors, the other for outline colors
- clicking Show UniProt page will display the corresponding
Web page at UniProt
UCSF Computer Graphics Laboratory / January 2012