5TCE | pdb_00005tce

N-terminal microdomain of 34-mers from HsDHODH - N-t(DH)

• PDB DOI: https://doi.org/10.2210/pdb5TCE/pdb
• BMRB: 30180

• Classification: OXIDOREDUCTASE
• Organism(s): Homo sapiens
• Mutation(s): Yes 
• Membrane Protein: Yes  OPM


• Deposited: 2016-09-14 Released: 2017-09-20 
• Deposition Author(s): Crusca, E., Munte, C.E.
• Funding Organization(s): Sao Paulo Research Foundation (FAPESP)

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 500 
• Conformers Submitted: 20 
• Selection Criteria: target function 

Literature

Conformational changes of the HsDHODH N-terminal Microdomain via DEER Spectroscopy.

Vicente, E.F., Sahu, I.D., Costa-Filho, A.J., Cilli, E.M., Lorigan, G.A.

(2015) J Phys Chem B 119: 8693-8697

• PubMed: 26086954 
• DOI: https://doi.org/10.1021/acs.jpcb.5b01706
• Primary Citation Related Structures: 
  5TCE


• PubMed Abstract: 
  

  The human enzyme dihydroorotate dehydrogenase (HsDHODH) has been studied for being a target for development of new antineoplasic and antiproliferative drugs. The synthetic peptide N-t(DH) represents the N-terminal microdomain of this enzyme, responsible for anchoring it to the inner mitochondrial membrane. Also, it is known to harbor quinones that are essential for enzyme catalysis. Here we report structural features of the peptide/membrane interactions obtained by using CD and DEER spectroscopic techniques, both in micelles and in lipid vesicles. The data revealed different peptide conformational states in micelles and liposomes, which could suggest that this microdomain acts in specific regions or areas of the mitochondria, which can be related with the control of the quinone access to the HsDHODH active site. This is the first study to report on conformational changes of the HsDHODH N-terminal microdomain through a combination of CD and DEER spectroscopic techniques.

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Organizational Affiliation: 
• †UNESP - Univ Estadual Paulista, Campus de Tupã, 17602-496, Tupã, SP Brazil.
‡Department of Chemistry and Biochemistry, Miami University, 45056, Oxford, Ohio United States.
§Laboratório de Biofísica Molecular, Departamento de Física, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo - USP,14040-901, Ribeirão Preto, SP Brazil.
∥Departamento de Bioquímica e Tecnologia Química, Instituto de Química, UNESP - Univ Estadual Paulista, 14800-900, Araraquara, SP Brazil.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 3.83 kDa 
• Atom Count: 270 
• Modeled Residue Count: 35 
• Deposited Residue Count: 35 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Dihydroorotate dehydrogenase (quinone), mitochondrial	A	35	Homo sapiens	Mutation(s): 1  EC: 1.3.5.2 Membrane Entity: Yes
UniProt & NIH Common Fund Data Resources
Find proteins for Q02127 (Homo sapiens) Explore Q02127  Go to UniProtKB:  Q02127
PHAROS:  Q02127 GTEx:  ENSG00000102967

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 500 
• Conformers Submitted: 20 
• Selection Criteria: target function 

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2017-09-20 
Deposition Author(s): Crusca, E., Munte, C.E.

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Funding Organization	Location	Grant Number
Sao Paulo Research Foundation (FAPESP)	Brazil	10/12953-4

Revision History  

• Version 1.0: 2017-09-20
  Type: Initial release
  
• Version 1.1: 2019-04-17
  Changes: Author supporting evidence, Data collection, Refinement description
• Version 1.2: 2020-01-01
  Changes: Author supporting evidence, Data collection
• Version 1.3: 2023-06-14
  Changes: Database references, Other
• Version 1.4: 2024-10-16
  Changes: Data collection, Database references, Structure summary