Esta página ha sido traducida por una máquina. Otras páginas pueden seguir apareciendo en inglés. View in English

Desentrañar ideas evolutivas sobre la conservación de péptidos AVT y la predicción de motivos antimicrobianos en todas las taxones

  • 0Department of Biological Sciences, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia.

|

|

Resumen

Este resumen es generado por máquina.

La arginina vasotocina (AVT) se conserva en gran medida en diversas especies, lo que sugiere un papel evolutivo crucial. Un nuevo motivo antimicrobiano dentro de AVT indica el potencial de nuevas terapias basadas en péptidos.

Área De La Ciencia

  • Biología evolutiva
  • La bioquímica
  • Microbiología

Sus Antecedentes

  • La arginina vasotocina (AVT) es reconocida por su papel en la esteroideogénesis y la biosíntesis del estradiol en el desarrollo temprano del cerebro.
  • La importancia biológica más amplia y la conservación evolutiva de AVT en todos los taxones no se entienden bien.

Objetivo Del Estudio

  • Investigar la conservación evolutiva y la anotación funcional de AVT en diversos taxones.
  • Explorar las propiedades antimicrobianas de AVT y sus dominios conservados.

Principales Métodos

  • Comparación de secuencias y análisis filogenéticos para evaluar la conservación de AVT y los orígenes evolutivos.
  • Análisis de enriquecimiento funcional para identificar vías compartidas y analogías con los genes AVT.
  • Identificación y caracterización fisicoquímica de un péptido antimicrobiano conservado (AMP) como motivo dentro de AVT.

Principales Resultados

  • AVT está altamente conservado con un motivo central a través de teleosts, mamíferos, plantas y bacterias, lo que indica una fuerte presión selectiva evolutiva.
  • Los análisis filogenéticos confirman que AVT y sus homólogos evolucionaron a partir de un gen ancestral común.
  • Se identificó un motivo similar al AMP conservado (GIRQCMSCGPGDRGR) dentro de AVT, que se predice que juega un papel en la permeabilización de la membrana y la defensa antimicrobiana. Las vías principales de AVT involucran la señalización neuroendocrina, inmune y de estrés.

Conclusiones

  • AVT exhibe funciones pleiotrópicas y estabilidad evolutiva en una amplia gama de taxones.
  • El motivo AVT similar al AMP identificado es un candidato prometedor para el diseño de péptidos antimicrobianos sintéticos.
  • Se necesita una evaluación experimental adicional para confirmar el potencial antimicrobiano de los péptidos derivados de AVT en modelos de infección.

Videos de Conceptos Relacionados

Antimicrobial Proteins 01:23

5.0K

Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...

Conservation of Protein Domains Over Different Proteins 02:26

11.3K

Protein domains are small structurally independent units that are part of a single amino acid chain.  Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to...

Conserved Binding Sites 01:49

4.3K

Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...

Conservation of Protein Domains 02:26

3.2K
Transduction 01:16

98

Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome...

Multi-species Conserved Sequences 02:51

4.3K

Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale  studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved...