8PI6 image
Entry Detail
PDB ID:
8PI6
Keywords:
HORMONE
Title:
Crystal structure of the monomeric zinc free human insulin A22K, B3E, B26E, B29R, desB30 precursor with a Ser-Glu-Asp-Trp-Trp-Arg C-peptide and a Glu-Glu-Gly-Glu-Pro-Arg N-terminal extension
Biological Source:
Source Organism:
Homo sapiens
Host Organism:
Saccharomyces cerevisiae
PDB Version:
Deposition Date:
2023-06-21
Release Date:
2023-11-08
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.14 Å
R-Value Free:
0.28
R-Value Work:
0.23
R-Value Observed:
0.24
Space Group:
P 21 21 21
8PI6 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:Insulin B chain,Insulin A chain
Chain IDs:A, B, C, D, E
Chain Length:63
Number of Molecules:5
Biological Source:Homo sapiens
UniProt ID:P01308 Pfam ID:PF00049
Primary Citation
Molecular engineering of insulin for recombinant expression in yeast.
Trends Biotechnol 42 464 478 (2024)
PMID: 37880066 DOI: 10.1016/j.tibtech.2023.09.012

Abstact

Since the first administration of insulin to a person with diabetes in 1922, scientific contributions from academia and industry have improved insulin therapy and access. The pharmaceutical need for insulin is now more than 40 tons annually, half of which is produced by recombinant secretory expression in Saccharomyces cerevisiae. We discuss how, in this yeast species, adaptation of insulin precursors by removable structural elements is pivotal for efficient secretory expression. The technologies reviewed have been implemented at industrial scale and are seminal for the supply of human insulin and insulin analogues to people with diabetes now and in the future. Engineering of a target protein with removable structural elements may provide a general approach to yield optimisation.

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Primary Citation of related structures
8PI6