8X1N

Cryo-EM structure of human alpha-fetoprotein


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.31 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural characteristics of alpha-fetoprotein, including N-glycosylation, metal ion and fatty acid binding sites.

Liu, K.Wu, C.Zhu, M.Xu, J.Lin, B.Lin, H.Liu, Z.Li, M.

(2024) Commun Biol 7: 505-505

  • DOI: https://doi.org/10.1038/s42003-024-06219-0
  • Primary Citation of Related Structures:  
    8X1N

  • PubMed Abstract: 

    Alpha-fetoprotein (AFP), a serum glycoprotein, is expressed during embryonic development and the pathogenesis of liver cancer. It serves as a clinical tumor marker, function as a carcinogen, immune suppressor, and transport vehicle; but the detailed AFP structural information has not yet been reported. In this study, we used single-particle cryo-electron microscopy(cryo-EM) to analyze the structure of the recombinant AFP obtained a 3.31 Å cryo-EM structure and built an atomic model of AFP. We observed and identified certain structural features of AFP, including N-glycosylation at Asn251, four natural fatty acids bound to distinct domains, and the coordination of metal ions by residues His22, His264, His268, and Asp280. Furthermore, we compared the structural similarities and differences between AFP and human serum albumin. The elucidation of AFP's structural characteristics not only contributes to a deeper understanding of its functional mechanisms, but also provides a structural basis for developing AFP-based drug vehicles.


  • Organizational Affiliation

    Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Hainan Medical College, Haikou, 571199, Hainan, PR China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Alpha-fetoprotein609Homo sapiensMutation(s): 0 
Gene Names: AFPHPAFP
UniProt & NIH Common Fund Data Resources
Find proteins for P02771 (Homo sapiens)
Explore P02771 
Go to UniProtKB:  P02771
PHAROS:  P02771
GTEx:  ENSG00000081051 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02771
Glycosylation
Glycosylation Sites: 1Go to GlyGen: P02771-1
Sequence Annotations
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
B
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE
GlyCosmos:  G15407YE
GlyGen:  G15407YE
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.31 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Science Foundation (NSF, China)China--

Revision History  (Full details and data files)

  • Version 1.0: 2024-05-15
    Type: Initial release
  • Version 1.1: 2024-10-16
    Changes: Data collection, Structure summary