Example of the new DAS sources response. It provides meta description for DAS servers. The meaning of the different elements are: SOURCE: This DAS source provides mappings to protein structures for Ensembl proteins. It has a unique ID in the DAS registration server (DS_146). The doc_href provides a link to a web page with more documentation on this data. MAINTAINER: contact this person if there is a problem with the server, or if you have any questions about it. VERSION: this DAS source has been registered at the DAS registry in 2005 and provides the latest available data. COORDINATES: The data is served as annotations for the set of protein sequences provided by Ensembl. An example accession code is provided which can be used to check if the server is giving a valid response. CAPABILITIES: The DAS/1 features command is being supported by this server. The query uri field provides the location of the DAS source. PROP: Different labels can be assigned. The leaseTime is the last time when this server has been validated successfully.