Figure 2.

Example Query Library Gene Component Maps. The GPS accesses a database populated by Retroid genomes. This query library contains all the genes and non-coding components, which the GPS uses to identify and reconstruct potential Retroid agents found in organismal genome databases. Those gene abbreviations not found in Figure 1 are as follows: APE = apurinic endonuclease, UN/UNK= unknown region, EN= putative PDD endonuclease (Xiong et al 1988), TE=tether, 5UTR= 5′ untranslated region, 3UTR= 3′ untranslated region, 5LTR= 5′ long terminal repeat, 3LTR= 3′ long terminal repeat. The FTERT is divided into a Carboxyl portion (CARB) and the RT. The red box highlights the RT genes. If a potential Retroid agent encodes all the genes in a specific query component library, it is considered full length. Retroid agents accession numbers and the hosts in which they were discovered are presented in Figure 3.