6VET

Human insulin analog: [GluB10,HisA8,ArgA9,TyrB20]-DOI

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.46 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.205 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

A structurally minimized yet fully active insulin based on cone-snail venom insulin principles.

Xiong, X., Menting, J.G., Disotuar, M.M., Smith, N.A., Delaine, C.A., Ghabash, G., Agrawal, R., Wang, X., He, X., Fisher, S.J., MacRaild, C.A., Norton, R.S., Gajewiak, J., Forbes, B.E., Smith, B.J., Safavi-Hemami, H., Olivera, B., Lawrence, M.C., Chou, D.H.

(2020) Nat Struct Mol Biol 27: 615-624

  • DOI: 10.1038/s41594-020-0430-8
  • Primary Citation of Related Structures:  
    6VEP, 6VEQ, 6VET

  • PubMed Abstract: 

    • Human insulin and its current therapeutic analogs all show propensity, albeit varyingly, to self-associate into dimers and hexamers, which delays their onset of action and makes blood glucose management difficult for people with diabetes. Recently, we described a monomeric, insulin-like peptide in cone-snail venom with moderate human insulin-like bioactivity ...

    Human insulin and its current therapeutic analogs all show propensity, albeit varyingly, to self-associate into dimers and hexamers, which delays their onset of action and makes blood glucose management difficult for people with diabetes. Recently, we described a monomeric, insulin-like peptide in cone-snail venom with moderate human insulin-like bioactivity. Here, with insights from structural biology studies, we report the development of mini-Ins-a human des-octapeptide insulin analog-as a structurally minimal, full-potency insulin. Mini-Ins is monomeric and, despite the lack of the canonical B-chain C-terminal octapeptide, has similar receptor binding affinity to human insulin. Four mutations compensate for the lack of contacts normally made by the octapeptide. Mini-Ins also has similar in vitro insulin signaling and in vivo bioactivities to human insulin. The full bioactivity of mini-Ins demonstrates the dispensability of the PheB24-PheB25-TyrB26 aromatic triplet and opens a new direction for therapeutic insulin development.

    Organizational Affiliation: 

    Department of Biochemistry, University of Utah, Salt Lake City, UT, USA. dannychou@stanford.edu.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin A chainA, C, E21Homo sapiensMutation(s): 2 
Gene Names: INS
UniProt & NIH Common Fund Data Resources
Find proteins for P01308 (Homo sapiens)
Explore P01308 
Go to UniProtKB:  P01308
PHAROS:  P01308
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01308
Protein Feature View
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin B chainB, D, F22Homo sapiensMutation(s): 2 
Gene Names: INS
UniProt & NIH Common Fund Data Resources
Find proteins for P01308 (Homo sapiens)
Explore P01308 
Go to UniProtKB:  P01308
PHAROS:  P01308
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01308
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.46 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.205 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 28.371α = 90
b = 52.117β = 90
c = 80.499γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Health and Medical Research Council (NHMRC, Australia)AustraliaAPP1143546
Other privateUnited States5-CDA-2018-572-A-N

Revision History  (Full details and data files)

  • Version 1.0: 2020-06-03
    Type: Initial release
  • Version 1.1: 2020-06-17
    Changes: Database references
  • Version 1.2: 2020-07-22
    Changes: Database references