Productive reorientation of a bound oxime reactivator revealed in room-temperature X-ray structures of native and VX-inhibited human acetylcholinesterase — Productive reorientation of oxime reactivator bound to hAChE — Productive reorientation of a bound oxime reactivator revealed in room temperature X-ray structures of native and VX-inhibited human acetylcholinesterase — Productive reorientation of oxime reactivator bound to hAChE