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Gontijo MTP, Teles MP, Vidigal PMP, Brocchi M. Expanding the Database of Signal-Anchor-Release Domain Endolysins Through Metagenomics. Probiotics Antimicrob Proteins 2022; 14:603-612. [PMID: 35525881 DOI: 10.1007/s12602-022-09948-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2022] [Indexed: 10/18/2022]
Abstract
Endolysins are bacteriophage-derived lytic enzymes with antimicrobial activity. The action of endolysins against Gram-negative bacteria remains a challenge due to the physical protection of the outer membrane. However, recent research has demonstrated that signal-anchor-release (SAR) endolysins permeate the outer membrane of Gram-negative bacteria. This study investigates 2628 putative endolysin genes identified in 183,298 bacteriophage genomes. Previously, bioinformatic approaches resulted in a database of 66 SAR endolysins. This manuscript almost doubles the list with 53 additional SAR endolysin candidates. Forty-eight of the putative SAR endolysins described in this study contained one muramidase catalytic domain, and five included additional cell wall-binding domains at the C-terminus. For the moment, SAR domains are found in four protein families: glycoside hydrolase family 19 (GH19), glycoside hydrolase family 24 (GH24), glycoside hydrolase family 25 (GH25), and glycoside hydrolase family 108 (GH108). These SAR lysis are clustered in eight groups based on biochemical properties and domain presence/absence. Therefore, in this study, we expand the arsenal of endolysin candidates that might act against Gram-negative bacteria and develop a consult database for antimicrobial proteins derived from bacteriophages.
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Affiliation(s)
- Marco Túlio Pardini Gontijo
- Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Cidade Universitária Zeferino Vaz, Rua Monteiro Lobato 255, Campinas, São Paulo, 13083-862, Brazil.
| | - Mateus Pereira Teles
- Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Cidade Universitária Zeferino Vaz, Rua Monteiro Lobato 255, Campinas, São Paulo, 13083-862, Brazil.,Faculdade de Farmácia, Universidade Estadual de Campinas (UNICAMP), Cidade Universitária Zeferino Vaz, Rua Cândido Portinari 200, Campinas, São Paulo, 13083-862, Brazil
| | - Pedro Marcus Pereira Vidigal
- Núcleo de Análise de Biomoléculas (NuBioMol), Universidade Federal de Viçosa (UFV), Vila Gianetti, Casa 21, Campus da UFV, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Marcelo Brocchi
- Departamento de Genética, Evolução, Microbiologia e Imunologia, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Cidade Universitária Zeferino Vaz, Rua Monteiro Lobato 255, Campinas, São Paulo, 13083-862, Brazil
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