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Multi-pass Transmembrane Proteins and β-barrels01:09

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In multi-pass transmembrane proteins, the polypeptide chain crosses the membrane more than once. The transmembrane polypeptide chain either forms an α-helix or β-strand structure. α-Helix containing multi-pass transmembrane proteins are ubiquitous, whereas β-strand containing ones are mainly found in gram-negative bacteria, mitochondria, and chloroplasts.
α-Helix containing multi-pass transmembrane proteins
Multi-pass transmembrane proteins such as...
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Insertion of Multi-pass Transmembrane Proteins in the RER01:29

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The rough ER membrane synthesizes, assembles, and embeds transmembrane proteins in diverse topologies. These proteins function as transporters or channels and can remain in the ER membrane or are sent to the Golgi complex, lysosome, and cell membrane.
The multipass transmembrane proteins are the type IV integral membrane proteins with multiple topogenic sequences determining their spatial arrangement in the ER membrane. Nearly all multipass proteins lack a cleavable signal sequence and use...
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The Significance of Membrane Transport01:44

The Significance of Membrane Transport

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The transport of solutes across the cell membrane is essential for metabolic processes, like maintaining cell size and volume, generating the action potential, exchanging nutrients and gases, etc. Membrane transport can be either passive or active. It can be simple diffusion, facilitated, or mediated transport aided by transport proteins such as transporters and channels.
Transporters facilitate either an active or passive movement of solutes. They can allow a single-molecule transport down its...
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Single-pass Transmembrane Proteins01:25

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Integral membrane proteins are tightly associated with the cell membrane and play a crucial role in cell communication, signaling, adhesion, and transport of the molecules. Some integral membrane proteins are present only in the membrane monolayer. For example, the enzyme fatty acid amide hydrolase is present in the cytoplasmic side of the membrane monolayer. In contrast, another type of integral membrane protein, also known as a transmembrane protein, spans across the membrane. Transmembrane...
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Mitochondrial Protein Sorting01:39

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Mitochondria are double-membrane organelles of the eukaryotes involved in cellular metabolism, signaling, ATP synthesis, and programmed cell death.  Each of these processes requires specific proteins and enzymes that must be correctly sorted to the right mitochondrial subcompartment for the proper functioning of the organelle.
Most of these mitochondrial proteins are encoded by the nucleus and imported to the mitochondria as unfolded or loosely folded precursors. Mitochondrial precursors...
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Cotranslational Protein Translocation01:20

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Translocation of proteins across membranes is an ancient process that occurs even in bacteria and archaebacteria. In fact, the components of the translocation machinery are still conserved between prokaryotes and eukaryotes.
Sec61 channel partners for cotranslational translocation
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TCS-TP: Predicción de proteínas transportadoras basada en la extracción de características a escala múltiple

Fan Yu1, Qianying Zheng1, Qingwei Fu1

  • 1College of Physics and Information Engineering, Fuzhou University, Fuzhou, China.

Biotechnology and applied biochemistry
|August 29, 2025
PubMed
Resumen

Desarrollamos TCS-TP, un nuevo predictor que utiliza redes neuronales transformadoras y convolucionales, para identificar con precisión las proteínas transportadoras (TP). Esta herramienta ayuda en la genómica funcional y el descubrimiento de nuevos TPs.

Palabras clave:
red neuronal convolucional (CNN)Predicción de las proteínasInformación de la secuenciaLas máquinas vectoriales de soporte (SVM)Transformador eléctricoProteínas transportadoras

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Área de la Ciencia:

  • La bioquímica
  • La genómica
  • La bioinformática

Sus antecedentes:

  • Las proteínas transportadoras (TP) son vitales para las funciones celulares como la homeostasis y la comunicación.
  • La identificación de nuevos TPs es crucial para la genómica funcional y el desarrollo de fármacos.
  • Los métodos actuales se enfrentan a desafíos para predecir con precisión las TP.

Objetivo del estudio:

  • Desarrollar un modelo computacional preciso para predecir las proteínas transportadoras (TP).
  • Aprovechar el aprendizaje profundo para la extracción de características a escala múltiple de secuencias de proteínas.
  • Mejorar el descubrimiento de nuevos TP en datos genómicos a gran escala.

Principales métodos:

  • Utilizó una arquitectura híbrida de aprendizaje profundo, TCS-TP, que combina transformadores y redes neuronales convolucionales (CNN).
  • Transformador empleado con activación GLU y una CNN con subredes paralelas para la extracción de características.
  • Máquinas vectoriales de soporte aplicadas para la clasificación final TP.

Principales resultados:

  • TCS-TP logró un alto rendimiento con un AUROC de 0,89, un AUPRC de 0,81 y una precisión del 91,66%.
  • El modelo demostró un rendimiento superior en comparación con los métodos de predicción de TP existentes.
  • Se identificaron con éxito las proteínas transportadoras de las secuencias de proteínas.

Conclusiones:

  • TCS-TP es una herramienta poderosa y precisa para predecir las proteínas transportadoras.
  • El modelo facilita proyectos genómicos a gran escala y el descubrimiento de nuevos TP.
  • Este enfoque avanza en la genómica funcional y la identificación de objetivos terapéuticos potenciales.