PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 32376987-3 2020 Herein, we found that a guanine rich tract, capable of forming intramolecular G-quadruplex in the presence of potassium ions, in the promoter region of human TMPRSS2 gene was quite important for gene transcriptional activity, hence affecting its function. Guanine 24-31 transmembrane serine protease 2 Homo sapiens 158-165