signaling receptor activity pattern recognition receptor activity https://github.com/geneontology/go-ontology/issues/17995 https://github.com/geneontology/go-ontology/issues/18588 PRR pathogen associated molecular pattern receptor activity Combining with a pathogen-associated molecular pattern (PAMP), a structure conserved among microbial species to initiate an innate immune response. signaling pattern recognition receptor activity 2013-05-29T15:24:44Z microbe-associated molecular pattern receptor activity PAMP receptor activity macrophage receptor activity PRR activity molecular_function GO:0008329 Wikipedia:Pattern_recognition_receptor MAMP receptor activity GO:0038187 bf