8r8o

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Hallucinated de novo TIM barrel with three helical extensions - HalluTIM3-1Hallucinated de novo TIM barrel with three helical extensions - HalluTIM3-1

Structural highlights

8r8o is a 1 chain structure with sequence from Synthetic construct. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.15Å
Ligands:, , ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Publication Abstract from PubMed

De novo protein design expands the protein universe by creating new sequences to accomplish tailor-made enzymes in the future. A promising topology to implement diverse enzyme functions is the ubiquitous TIM-barrel fold. Since the initial de novo design of an idealized four-fold symmetric TIM barrel, the family of de novo TIM barrels is expanding rapidly. Despite this and in contrast to natural TIM barrels, these novel proteins lack cavities and structural elements essential for the incorporation of binding sites or enzymatic functions. In this work, we diversified a de novo TIM barrel by extending multiple betaalpha-loops using constrained hallucination. Experimentally tested designs were found to be soluble upon expression in Escherichia coli and well-behaved. Biochemical characterization and crystal structures revealed successful extensions with defined alpha-helical structures. These diversified de novo TIM barrels provide a framework to explore a broad spectrum of functions based on the potential of natural TIM barrels.

Diversifying de novo TIM barrels by hallucination.,Beck J, Shanmugaratnam S, Hocker B Protein Sci. 2024 Jun;33(6):e5001. doi: 10.1002/pro.5001. PMID:38723111[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

  1. Beck J, Shanmugaratnam S, Höcker B. Diversifying de novo TIM barrels by hallucination. Protein Sci. 2024 Jun;33(6):e5001. PMID:38723111 doi:10.1002/pro.5001

8r8o, resolution 2.15Å

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