Protein transport. Regulator of membrane traffic from the Golgi apparatus towards the endoplasmic reticulum (ER). Binds GTP and GDP and possesses intrinsic GTPase activity (By similarity). At2g44610 MAPVSALAKYKLVFLGDQSVGKTSIITRFMYDKFDNTYQATIGIDFLSKTMYLEDRTVRLQLWDTAGQERFRSLIPSYIRDSSVAVIVYDVASRQSFLNTTKWIDEVRTERGSDVIVVLVGNKTDLVDKRQVSIEEAEAKARELNVMFIETSAKAGFNIKALFRKIAAALPGMETLSSTKQEDMVDVNLKSSNANASLAQQQSGGCSC Ras-related protein RABH1b RABH1B RAB6A Ras-related protein Rab6A 208 RAH1B_ARATH F16B22.10