>d1taq_3 c.55.3.5 (290-422) Exonuclease domain of prokaryotic DNA polymerase {Thermus aquaticus} spkaleeapwpppegafvgfvlsrkepmwadllalaaarggrvhrapepykalrdlkear gllakdlsvlalreglglppgddpmllaylldpsnttpegvarryggewteeageraals erlfanlwgrleg