
-   GeneCards (human): [https://www.genecards.org/cgi-bin/carddisp.pl?gene=CTSD](https://www.genecards.org/cgi-bin/carddisp.pl?gene=CTSD)
-   Harmonizome (human): [https://maayanlab.cloud/Harmonizome/gene/CTSD](https://maayanlab.cloud/Harmonizome/gene/CTSD)
-   NCBI (human): [https://www.ncbi.nlm.nih.gov/gene/1509](https://www.ncbi.nlm.nih.gov/gene/1509)
-   NCBI (rat): [https://www.ncbi.nlm.nih.gov/gene/171293](https://www.ncbi.nlm.nih.gov/gene/171293)
-   Ensemble (human): [https://useast.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000117984](https://useast.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000117984)
-   Ensemble (rat): [https://useast.ensembl.org/Rattus_norvegicus/Gene/Summary?g=ENSRNOG00000020206](https://useast.ensembl.org/Rattus_norvegicus/Gene/Summary?g=ENSRNOG00000020206)
-   Rat Genome Database (rat): [https://rgd.mcw.edu/rgdweb/report/gene/main.html?id=621511](https://rgd.mcw.edu/rgdweb/report/gene/main.html?id=621511)
-   Uniprot (human): [https://www.uniprot.org/uniprotkb/P07339](https://www.uniprot.org/uniprotkb/P07339)
-   Uniprot (rat): [https://www.uniprot.org/uniprotkb/P24268](https://www.uniprot.org/uniprotkb/P24268)
-   Wikigenes (human): [https://www.wikigenes.org/e/gene/e/1509.html](https://www.wikigenes.org/e/gene/e/1509.html)
-   Wikigenes (rat): [https://www.wikigenes.org/e/gene/e/171293.html](https://www.wikigenes.org/e/gene/e/171293.html)
-   Alphafold (human): [https://alphafold.ebi.ac.uk/entry/P07339](https://alphafold.ebi.ac.uk/entry/P07339)
-   Alphafold (rat): [https://alphafold.ebi.ac.uk/entry/P24268](https://alphafold.ebi.ac.uk/entry/P24268)
-   PDB (human): [https://www.rcsb.org/structure/1LYA](https://www.rcsb.org/structure/1LYA), [https://www.rcsb.org/structure/1LYB](https://www.rcsb.org/structure/1LYB), [https://www.rcsb.org/structure/1LYW](https://www.rcsb.org/structure/1LYW), [https://www.rcsb.org/structure/4OBZ](https://www.rcsb.org/structure/4OBZ), [https://www.rcsb.org/structure/4OC6](https://www.rcsb.org/structure/4OC6), [https://www.rcsb.org/structure/4OD9](https://www.rcsb.org/structure/4OD9)
-   PDB (mouse): none
-   PDB (rat): [https://www.rcsb.org/structure/5UX4](https://www.rcsb.org/structure/5UX4)
