>sp|P06807|PCPP_BPT4 Prohead core protein protease OS=Enterobacteria phage T4 OX=10665 GN=21 PE=1 SV=2 MNEPQLLIETWGQPGEIIDGVPMLESHDGKDLGLKPGLYIEGIFMQAEVVNRNKRLYPKR ILEKAVKDYINEQVLTKQALGELNHPPRANVDPMQAAIIIEDMWWKGNDVYGRARVIEGD HGPGDKLAANIRAGWIPGVSSRGLGSLTDTNEGYRIVNEGFKLTVGVDAVWGPSAPDAWV TPKEITESQTAEADTSADDAYMALAEAMKKAL