>sp|Q6QGL2|TFLIV_BPT5 H-N-H endonuclease F-TflIV OS=Escherichia phage T5 GN=hegA MRTDILDRKEEIAQWIAQGKSKAEIARMLSCSSNTLEAYLGKLGIVVIPTNRQYDNKYKS ATEYLYNGSPISSYKLKNKILNEGLKPHKCESCGLESWLDKPIPLELEHKDGNHYNNEWD NLALLCPNCHALTPTHAGKNIGRYTERTVNTCAICHCEISSRATHCKSCTPKGITINPDI TVEQIEYWVSKYSWIRASKELGLSDTGLRKRYKSLTGKDPKSIKKNR