Gene 65 in BossLady (42154,43032) and its homolog in Zartrosa show nice HHPred matches to the lytic CHAPK domain of the endolysin LysK from Staphylococcus aureus bacteriophage K among others. I attach snapshots from HHPred matches. The matches cover the length of the protein with over 99% prob and low E-values.
Pasting info from HHPred hits from BossLady (uploaded in Pecaan)

4CT3_C ORF30/ORF32; VIRAL PROTEIN, PEPTIDOGLYCAN, PROTEASE; HET: EPE, GOL, CMH, MMC; 1.69A {STAPHYLOCOCCUS PHAGE K} 99.7 46.5753 26 165 1 137 9.2e-18
5UDN_B Phage-associated cell wall hydrolase; lysin, d-alanyl-l-alanine endopeptidase, CHAP domain; HET: GOL; 1.971A {Streptococcus pyogenes MGAS5005} 99.6 62.3288 1 203 2 184 4.8e-16

Can go with more generic hydrolase but PDB files suggest we can be more specific.
10Kb