Expressed in thymus (in thymocytes), spleen (in splenocytes), lymph node and lung. Belongs to the TRAFAC class TrmE-Era-EngA-EngB-Septin-like GTPase superfamily. AIG1/Toc34/Toc159-like paraseptin GTPase family. IAN subfamily. The sequence differs from that shown because it seems to be derived from a pre-mRNA.