>4NS1_1|Chains A, B, C, D|Purine nucleoside phosphorylase|Porphyromonas gingivalis (431947) MHHHHHHSSGVDLGTENLYFQSMKLQEQHYHEAASFLSSRLPGDAKTAIILGSGLGELAEKIENKTVIPYNEIPHFAQATAVGHKGNIIGGILGGTPVVAMQGRFHYYEGYSMDQVTFPIRVMKLLGIENLFVSNAAGGINTSFKVGDLMIICDHINNLPNPLIGPNMDMFGVRFPDMTRAYDREFIAKAKGIAQELNIPVKEGVYVGLTGPSYETPAEYKFWGQVGGDAIGMSTVPEVIVARHTGIRVFGMSVITNEGYHFADDFVNDEQDVIRAANAASEKMGAIFARLIAAV