
-   GeneCards (human): [https://www.genecards.org/cgi-bin/carddisp.pl?gene=PPL](https://www.genecards.org/cgi-bin/carddisp.pl?gene=PPL)
-   Harmonizome (human): [https://maayanlab.cloud/Harmonizome/gene/PPL](https://maayanlab.cloud/Harmonizome/gene/PPL)
-   NCBI (human): [https://www.ncbi.nlm.nih.gov/gene/5493](https://www.ncbi.nlm.nih.gov/gene/5493)
-   NCBI (rat): [https://www.ncbi.nlm.nih.gov/gene/302934](https://www.ncbi.nlm.nih.gov/gene/302934)
-   Ensemble (human): [https://useast.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000118898](https://useast.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000118898)
-   Ensemble (rat): [https://useast.ensembl.org/Rattus_norvegicus/Gene/Summary?g=ENSRNOG00000002930](https://useast.ensembl.org/Rattus_norvegicus/Gene/Summary?g=ENSRNOG00000002930)
-   Rat Genome Database (rat): [https://rgd.mcw.edu/rgdweb/report/gene/main.html?id=1305511](https://rgd.mcw.edu/rgdweb/report/gene/main.html?id=1305511)
-   Uniprot (human): [https://www.uniprot.org/uniprotkb/O60437](https://www.uniprot.org/uniprotkb/O60437)
-   Uniprot (rat): [https://www.uniprot.org/uniprotkb/D4A5T8](https://www.uniprot.org/uniprotkb/D4A5T8)
-   Wikigenes (human): [https://www.wikigenes.org/e/gene/e/5493.html](https://www.wikigenes.org/e/gene/e/5493.html)
-   Wikigenes (rat): [https://www.wikigenes.org/e/gene/e/302934.html](https://www.wikigenes.org/e/gene/e/302934.html)
-   Alphafold (human): [https://alphafold.ebi.ac.uk/entry/O60437](https://alphafold.ebi.ac.uk/entry/O60437)
-   Alphafold (rat): [https://alphafold.ebi.ac.uk/entry/D4A5T8](https://alphafold.ebi.ac.uk/entry/D4A5T8)
-   PDB (human): [https://www.rcsb.org/structure/4Q28](https://www.rcsb.org/structure/4Q28)
-   PDB (mouse): none
-   PDB (rat): none
