6AHC

Cryo-EM structure of aldehyde-alcohol dehydrogenase reveals a high-order helical architecture critical for its activity

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.45 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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This is version 1.1 of the entry. See complete history. 


Literature

Aldehyde-alcohol dehydrogenase forms a high-order spirosome architecture critical for its activity.

Kim, G., Azmi, L., Jang, S., Jung, T., Hebert, H., Roe, A.J., Byron, O., Song, J.J.

(2019) Nat Commun 10: 4527-4527

  • DOI: 10.1038/s41467-019-12427-8
  • Primary Citation of Related Structures:  
    6AHC

  • PubMed Abstract: 

    • Aldehyde-alcohol dehydrogenase (AdhE) is a key enzyme in bacterial fermentation, converting acetyl-CoA to ethanol, via two consecutive catalytic reactions. Here, we present a 3.5 Å resolution cryo-EM structure of full-length AdhE revealing a high-order spirosome architecture ...

    Aldehyde-alcohol dehydrogenase (AdhE) is a key enzyme in bacterial fermentation, converting acetyl-CoA to ethanol, via two consecutive catalytic reactions. Here, we present a 3.5 Å resolution cryo-EM structure of full-length AdhE revealing a high-order spirosome architecture. The structure shows that the aldehyde dehydrogenase (ALDH) and alcohol dehydrogenase (ADH) active sites reside at the outer surface and the inner surface of the spirosome respectively, thus topologically separating these two activities. Furthermore, mutations disrupting the helical structure abrogate enzymatic activity, implying that formation of the spirosome structure is critical for AdhE activity. In addition, we show that this spirosome structure undergoes conformational change in the presence of cofactors. This work presents the atomic resolution structure of AdhE and suggests that the high-order helical structure regulates its enzymatic activity.

    Organizational Affiliation: 

    Department of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Korea. songj@kaist.ac.kr.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Aldehyde-alcohol dehydrogenase
A, B, C, D, E, F, G, H
A, B, C, D, E, F, G, H
893Escherichia coli K-12Mutation(s): 0 
Gene Names: adhE, ana, b1241, JW1228
EC: 1.1.1.1 (PDB Primary Data), 1.2.1.10 (PDB Primary Data)
UniProt
Find proteins for P0A9Q7 (Escherichia coli (strain K12))
Explore P0A9Q7 
Go to UniProtKB:  P0A9Q7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0A9Q7
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.45 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data

  • Deposited Date: 2018-08-17 
  • Released Date: 2019-08-21 
    • Deposition Author(s): Kim, G., Song, J.J.
Funding OrganizationLocationGrant Number
National Research Foundation (Korea)Korea, Republic OfNRF-2016K1A1A2912057
National Research Foundation (Korea)Korea, Republic OfNRF-2016R1A2B3006293

Revision History  (Full details and data files)

  • Version 1.0: 2019-08-21
    Type: Initial release
  • Version 1.1: 2019-12-18
    Changes: Database references