Signal transducer in the Ras-MAPK signaling pathway that regulates cell proliferation and survival (PubMed:22821884). Ras proteins bind GDP/GTP and possess intrinsic GTPase activity (PubMed:12740440, PubMed:14500341, PubMed:9020151). Recognized by LZTR1 that mediates its ubiquitination by a BCR (BTB-CUL3-RBX1) E3 ubiquitin- protein ligase complex (PubMed:40934300). {ECO:0000269|PubMed:12740440, ECO:0000269|PubMed:14500341, ECO:0000269|PubMed:22821884, ECO:0000269|PubMed:40934300, ECO:0000269|PubMed:9020151}. This is the function of Ensembl gene identifier ENSG00000174775 (HRAS, HRas proto-oncogene, GTPase).