Xsurvey: Web Tool to Query the Set of Homorepeats of all Reference Proteomes

Homorepeats are low complexity regions in protein sequences composed of repetitions of one specific amino acid residue. There is currently no automatic way to compare the set of homorepeats between two or more species. Here we present Xsurvey, a web tool to query the set of homorepeats of 23,150 completely-sequenced proteomes. The polyX usage values can be easily compared visually, which simplifies the interpretation of the results.