atlastin GTPase 1 FSP1 AD-FSP atlastin spastic paraplegia 3A (autosomal dominant) GBP3 HSN1D SPG3 SPG3A atlastin1 atlastin-1 GBP-3 GTP-binding protein 3 brain-specific GTP-binding protein guanine nucleotide-binding protein 3 guanylate-binding protein 3 hGBP3 spastic paraplegia 3 protein A Atlastin-1 Brain-specific GTP-binding protein Guanine nucleotide-binding protein 3 Spastic paraplegia 3 protein A EC 3.6.5.-