The phrase "particular locus" refers to a specific place or location. It means a specific spot or point in space where something is located or happens. Full definition
Sanger COSMIC identification numbers signify precise mutations at particular loci in specific genes enabling direct identification of specific cancer mutations. (horizondiscovery.com)
However, to measure the total amount of DNA turnover at particular loci, gaps annotated in a query genome needed to be mapped to a reference genome. (journals.plos.org)
That is, it is a way in which the world is actively appropriated at a particular locus in space time. (religion-online.org)