There are a number of B1 phages that have tail assembly chaperones called (Pham 10859 and pham 26552) but most have called as NKF. There is no evidence of a slippery sequence so these calls are made as two completely separate tail assembly chaperones. The position is generally right for this but it appears these calls are made based on one example in the phagesdb blast search and the HHPRED data are supportive of call such as tail protein for pham 10859 and nothing phage like for pham 26552. Any advice?