>4YOR_1|Chains A, B|3-5 exonuclease PhoExo I|Pyrococcus horikoshii (53953) MRIVAADTGGAVLDESFQPVGLIATVAVLVEKPYKTSKRFLVKYADPYNYDLSGRQAIRDEIELAIELAREVSPDVIHLDSTLGGIEVRKLDESTIDALQISDRGKEIWKELSKDLQPLAKKFWEETGIEIIAIGKSSVPVRIAEIYAGIFSVKWALDNVKEKGGLLVGLPRYMEVEIKKDKIIGKSLDPREGGLYGEVKTEVPQGIKWELYPNPLVRRFMVFEITSKS