6FWB

Crystal structure of Mat2A at 1.79 Angstron resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Free: 0.183 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.172 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Identification of a natural inhibitor of methionine adenosyltransferase 2A regulating one-carbon metabolism in keratinocytes.

Bai, J.Gao, Y.Chen, L.Yin, Q.Lou, F.Wang, Z.Xu, Z.Zhou, H.Li, Q.Cai, W.Sun, Y.Niu, L.Wang, H.Wei, Z.Lu, S.Zhou, A.Zhang, J.Wang, H.

(2019) EBioMedicine 39: 575-590

  • DOI: https://doi.org/10.1016/j.ebiom.2018.12.036
  • Primary Citation of Related Structures:  
    6FWB

  • PubMed Abstract: 

    Psoriasis is a common chronic inflammatory skin disease which lacks effective strategies for the treatment. Natural compounds with biological activities are good tools to identify new targets with therapeutic potentials. Acetyl-11-keto-β-boswellic acid (AKBA) is the most bioactive ingredient of boswellic acids, a group of compounds with anti-inflammatory and anti-cancer properties. Target identification of AKBA and metabolomics analysis of psoriasis helped to elucidate the molecular mechanism underlying its effect, and provide new target(s) to treat the disease. To explore the targets and molecular mechanism of AKBA, we performed affinity purification, metabolomics analysis of HaCaT cells treated with AKBA, and epidermis of imiquimod (IMQ) induced mouse model of psoriasis and psoriasis patients. AKBA directly interacts with methionine adenosyltransferase 2A (MAT2A), inhibited its enzyme activity, decreased level of S-adenosylmethionine (SAM) and SAM/SAH ratio, and reprogrammed one‑carbon metabolism in HaCaT cells. Untargeted metabolomics of epidermis showed one‑carbon metabolism was activated in psoriasis patients. Topical use of AKBA improved inflammatory phenotype of IMQ induced psoriasis-like mouse model. Molecular docking and site-directed mutagenesis revealed AKBA bound to an allosteric site at the interface of MAT2A dimer. Our study extends the molecular mechanism of AKBA by revealing a new interacting protein MAT2A. And this leads us to find out the dysregulated one‑carbon metabolism in psoriasis, which indicates the therapeutic potential of AKBA in psoriasis. FUND: The National Natural Science Foundation, the National Program on Key Basic Research Project, the Shanghai Municipal Commission, the Leading Academic Discipline Project of the Shanghai Municipal Education Commission.


  • Organizational Affiliation

    Department of Immunology and Microbiology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai Institute of Immunology, Shanghai 200025, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
S-adenosylmethionine synthase isoform type-2A [auth B],
B [auth A],
C,
D
410Homo sapiensMutation(s): 0 
Gene Names: MAT2AAMS2MATA2
EC: 2.5.1.6
UniProt & NIH Common Fund Data Resources
Find proteins for P31153 (Homo sapiens)
Explore P31153 
Go to UniProtKB:  P31153
PHAROS:  P31153
GTEx:  ENSG00000168906 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP31153
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
PG4
Query on PG4

Download Ideal Coordinates CCD File 
FA [auth D]
GA [auth D]
L [auth B]
M [auth B]
X [auth A]
FA [auth D],
GA [auth D],
L [auth B],
M [auth B],
X [auth A],
Y [auth A],
Z [auth C]
TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
SO4
Query on SO4

Download Ideal Coordinates CCD File 
BA [auth D]
CA [auth D]
DA [auth D]
E [auth B]
EA [auth D]
BA [auth D],
CA [auth D],
DA [auth D],
E [auth B],
EA [auth D],
F [auth B],
G [auth B],
H [auth B],
I [auth B],
J [auth B],
K [auth B],
P [auth A],
Q [auth A],
R [auth A],
S [auth A],
T [auth A],
U [auth A],
V [auth A],
W [auth A]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL

Download Ideal Coordinates CCD File 
AA [auth D],
O [auth A]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
NA
Query on NA

Download Ideal Coordinates CCD File 
N [auth B]SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Free: 0.183 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.172 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.43α = 90
b = 103.027β = 93.36
c = 114.465γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
iMOSFLMdata reduction
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-03-27
    Type: Initial release
  • Version 1.1: 2019-06-12
    Changes: Data collection, Structure summary
  • Version 1.2: 2024-05-08
    Changes: Data collection, Database references, Refinement description