The function of Ensembl gene identifier ENSG00000196712 (NF1, neurofibromin 1) is as follows. Stimulates the GTPase activity of Ras. NF1 shows greater affinity for Ras GAP, but lower specific activity. May be a regulator of Ras activity. {ECO:0000269|PubMed:2121371, ECO:0000269|PubMed:8417346}.