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Related Concept Videos

Protein Complex Assembly02:41

Protein Complex Assembly

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Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
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Viral Structure00:56

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Viruses are extraordinarily diverse in shape and size, but they all have several structural features in common. All viruses have a core that contains a DNA- or RNA-based genome. The core is surrounded by a protective coat of proteins called the capsid. The capsid is composed of subunits called capsomeres. The capsid and genome-containing core are together known as the nucleocapsid.
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Synthetic biology is an interdisciplinary science that involves using principles from disciplines such as engineering, molecular biology, cell biology, and systems biology. It involves remodeling existing organisms from nature or constructing completely new synthetic organisms for applications such as protein or enzyme production, bioremediation, value-added macromolecule production, and the addition of desirable traits to crops, to name a few.
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Intracellular bacteria and viruses often comprise a group of highly infectious pathogens that can cause several diseases. Bacterial pathogens include those belonging to the genus Rickettsia responsible for conditions such as rocky mountain spotted fever and the Mediterranean spotted fever; Chlamydia, a genus responsible for a sexually transmitted disease; Coxiella burnetii, an agent responsible for Q fever. Viral pathogens include vaccinia—a poxvirus, and herpes simplex virus—a...
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Updated: Feb 19, 2026

The MultiBac Protein Complex Production Platform at the EMBL
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MultiBac: from protein complex structures to synthetic viral nanosystems.

Martin Pelosse1, Hannah Crocker1, Barbara Gorda1

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The MultiBac system facilitates multiprotein complex production for structural biology. Recent advancements enable artificial protein synthesis and mammalian applications, including CRISPR/Cas9 gene editing.

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Area of Science:

  • Structural Biology
  • Molecular Biology
  • Biotechnology

Background:

  • The MultiBac system is a modular tool for producing multiprotein complexes.
  • It has been instrumental in elucidating the structure and function of molecular machines.
  • This includes previously inaccessible high-value drug targets.

Purpose of the Study:

  • To review recent developments in the MultiBac system.
  • To highlight its expanded applications beyond traditional structural biology.
  • To discuss its adaptation for novel areas like synthetic biology and mammalian systems.

Main Methods:

  • Utilizing the MultiBac baculovirus/insect cell expression vector system.
  • Developing customized baculoviral genomes for specific applications.
  • Adapting the system for mammalian applications, including gene editing.

Main Results:

  • The MultiBac system has successfully enabled the production of complex molecular machines.
  • Recent modifications allow for the synthesis of artificial proteins via genetic code expansion.
  • The system is being rewired for mammalian applications, notably CRISPR/Cas9 gene editing.

Conclusions:

  • The MultiBac system continues to evolve as a versatile platform.
  • Its modularity and adaptability support diverse applications in structural biology and beyond.
  • Future directions include enhanced utility in mammalian systems and synthetic biology.