Gene product 79; This is a domain of unknown function found in Mycobacterium phage. Family members include the full Gp79 protein found in Mycobacteriophage L5. Mycobacteriophage L5, is a phage isolated from Mycobacterium smegmatis. It forms stable lysogens in M. smegmatis and has a broad host range among the pathogenic mycobacteria. L5 encodes gene products (gp) toxic to the host M. smegmatis. Expression of gp79 interferes with the cell membrane or cell-wall synthesis of M. smegmatis, leading to altered cell morphology. It also has a bactericidal effect on E. coli. The N-terminal segment of gp79 (amino acids 1-41) shares sequence similarity with the signal peptide of the D-alanylD-alanine carboxypeptidase of Bacillus licheniformis. This enzyme removes C-terminal D-alanyl residues from sugarpeptide cell-wall precursors and is also a penicillin-binding protein (PBP). The homology of the hydrophobic N-terminal part of gp79 to a PBP (penicillin-binding protein) signal peptide may indicate an interaction of gp79 with proteins or metabolites involved in the peptidoglycan synthesis of M. smegmatis.

                         10        20        30        40
                 ....*....|....*....|....*....|....*....|.
gi 1464441684 27 ASADPISFDQSSFPCEEDEVLGFSPEFGPDKVGCIHIDSLR 67
Cdd:pfam17463 11 ALADDRGFPQSEFPCEEDEVLGYAPEFGPDRVGCIHIDELR 51

Gene product 79; This is a domain of unknown function found in Mycobacterium phage. Family members include the full Gp79 protein found in Mycobacteriophage L5. Mycobacteriophage L5, is a phage isolated from Mycobacterium smegmatis. It forms stable lysogens in M. smegmatis and has a broad host range among the pathogenic mycobacteria. L5 encodes gene products (gp) toxic to the host M. smegmatis. Expression of gp79 interferes with the cell membrane or cell-wall synthesis of M. smegmatis, leading to altered cell morphology. It also has a bactericidal effect on E. coli. The N-terminal segment of gp79 (amino acids 1-41) shares sequence similarity with the signal peptide of the D-alanylD-alanine carboxypeptidase of Bacillus licheniformis. This enzyme removes C-terminal D-alanyl residues from sugarpeptide cell-wall precursors and is also a penicillin-binding protein (PBP). The homology of the hydrophobic N-terminal part of gp79 to a PBP (penicillin-binding protein) signal peptide may indicate an interaction of gp79 with proteins or metabolites involved in the peptidoglycan synthesis of M. smegmatis.

                         10        20        30        40
                 ....*....|....*....|....*....|....*....|.
gi 1464441684 27 ASADPISFDQSSFPCEEDEVLGFSPEFGPDKVGCIHIDSLR 67
Cdd:pfam17463 11 ALADDRGFPQSEFPCEEDEVLGYAPEFGPDRVGCIHIDELR 51

Gene product 79; This is a domain of unknown function found in Mycobacterium phage. Family members include the full Gp79 protein found in Mycobacteriophage L5. Mycobacteriophage L5, is a phage isolated from Mycobacterium smegmatis. It forms stable lysogens in M. smegmatis and has a broad host range among the pathogenic mycobacteria. L5 encodes gene products (gp) toxic to the host M. smegmatis. Expression of gp79 interferes with the cell membrane or cell-wall synthesis of M. smegmatis, leading to altered cell morphology. It also has a bactericidal effect on E. coli. The N-terminal segment of gp79 (amino acids 1-41) shares sequence similarity with the signal peptide of the D-alanylD-alanine carboxypeptidase of Bacillus licheniformis. This enzyme removes C-terminal D-alanyl residues from sugarpeptide cell-wall precursors and is also a penicillin-binding protein (PBP). The homology of the hydrophobic N-terminal part of gp79 to a PBP (penicillin-binding protein) signal peptide may indicate an interaction of gp79 with proteins or metabolites involved in the peptidoglycan synthesis of M. smegmatis.

                         10        20        30        40
                 ....*....|....*....|....*....|....*....|.
gi 1464441684 27 ASADPISFDQSSFPCEEDEVLGFSPEFGPDKVGCIHIDSLR 67
Cdd:pfam17463 11 ALADDRGFPQSEFPCEEDEVLGYAPEFGPDRVGCIHIDELR 51