Alternate locations of backbones
From Proteopedia
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==Alternate location server== | ==Alternate location server== | ||
| - | An [http://oca.weizmann.ac.il/reports/altLocations.txt Alternate Location Server] (part of the [http://oca.weizmann.ac.il/ OCA Browser] system) scans all entries in the [[Protein Data Bank]], listing those that have alternate locations. | + | An [http://oca.weizmann.ac.il/reports/altLocations.txt Alternate Location Server] (AltLoc Server) (part of the [http://oca.weizmann.ac.il/ OCA Browser] system) scans all entries in the [[Protein Data Bank]], listing those that have alternate locations. The analysis below is based on an AltLoc Server report from late May, 2023, when the total number of entries in the [[PDB]] was ~200,700. Here are two example lines from the report: |
ID Method Res Dep Date | ID Method Res Dep Date | ||
9ins X-ray diffraction 1.70 1991-10-23 min=-1.0 ave=-1.0 max=-1.0 A=48 B=48 | 9ins X-ray diffraction 1.70 1991-10-23 min=-1.0 ave=-1.0 max=-1.0 A=48 B=48 | ||
| + | 4dgd X-ray diffraction 1.4 2012-01-25 min=0.03 ave 4.78 max 15.87 A=84 B=84 A.CA=13 B.CA=13 | ||
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| + | ==Inter-AltLoc Backbone Distances== | ||
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| + | ==AltLoc Backbone Cases== | ||
Revision as of 21:46, 7 June 2023
At sufficiently high resolution, empirical methods for determining macromolecular structure may detect multiple locations for some atoms, termed alternate locations. When alternate locations for backbones deviate substantially, the backbone may separate into two pathways ("fork") and then rejoin into a single pathway.
Alternate location server
An Alternate Location Server (AltLoc Server) (part of the OCA Browser system) scans all entries in the Protein Data Bank, listing those that have alternate locations. The analysis below is based on an AltLoc Server report from late May, 2023, when the total number of entries in the PDB was ~200,700. Here are two example lines from the report:
ID Method Res Dep Date 9ins X-ray diffraction 1.70 1991-10-23 min=-1.0 ave=-1.0 max=-1.0 A=48 B=48 4dgd X-ray diffraction 1.4 2012-01-25 min=0.03 ave 4.78 max 15.87 A=84 B=84 A.CA=13 B.CA=13
