From: Jim Procter
If, for some reason, no SIFTS mapping data exists, then Jalview - will generate a mapping using its built-in Needleman and Wunsch - global alignment algorithm. This method of mapping was used for all - structures prior to version 2.10. -
- Controlling and troubleshooting SIFTS mappings
+ will generate a mapping using the built-in Needleman and Wunsch
+ global alignment algorithm. This is how sequence-structure mappings
+ were created before version 2.10.
Controlling and troubleshooting SIFTS mappings
Configuration options controlling whether SIFTS mappings are used
can be found in the Tools → Preferences →
Structure tab, under 'Sequence ↔ Structure method'.
Note:
@@ -38,30 +37,29 @@
Multi-Chain Mappings
SIFTS gives Jalview the
ability to display multi-chain mappings between UniProt sequences
and PDB structure data. This is important when working with
- multimeric proteins, since the biological unit will contain several
+ multimeric proteins, when the biological assembly can contain several
structures for the same protein sequence. Multi-chain mapping allows
all residues in a structure to be located in the alignment, and
also, when shading the structure by sequence colours, enables
conservation patterns between oligomer interfaces to be explored.
To see this in action, load uniprot sequence for FER1_MAIZE - then veiw PDB structure for 3B2F, you will notice that mousing over +
To see this in action, Retrieve the UniProt sequence + FER1_MAIZE, and then view one of its structures: 3B2F. Mousing over the sequence results to two positions being highlighted in the - structure, also colouring the sequence transfers the color to all + structure, and colouring the alignment transfers the color to all the mapped chains in the structure.
Viewing Mapping Output
The mapping provided
by the SIFTS record is accessible via File →
View mapping menu of the structure viewers. The screenshot below
- is the mapping output for the {FER1_MAIZE ↔
- 3B2F} example described above, and confirms that all two chains
- were mapped. The mapping method used can be seen within the area
- highlighted with red boarder.
+ shows the mapping created between UniProt sequence FER1_MAIZE and proteins in PDB 3B2F, which reports thattwo chains
+ were mapped. The mapping method is also reported (highlighted with red border).
+
SIFTS Mapping integration was added in Jalview 2.10
diff --git a/help/html/whatsNew.html b/help/html/whatsNew.html index ac48313..1d2367d 100755 --- a/help/html/whatsNew.html +++ b/help/html/whatsNew.html @@ -52,8 +52,9 @@