5CE8

Crystal structure of branched-chain aminotransferase from thermophilic archaea Thermoproteus uzoniensis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.168 
  • R-Value Work: 0.120 
  • R-Value Observed: 0.122 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

First structure of archaeal branched-chain amino acid aminotransferase from Thermoproteus uzoniensis specific for L-amino acids and R-amines.

Boyko, K.M.Stekhanova, T.N.Nikolaeva, A.Y.Mardanov, A.V.Rakitin, A.L.Ravin, N.V.Bezsudnova, E.Y.Popov, V.O.

(2016) Extremophiles 20: 215-225

  • DOI: https://doi.org/10.1007/s00792-016-0816-z
  • Primary Citation of Related Structures:  
    5CE8

  • PubMed Abstract: 

    The gene TUZN1299 from the genome of the hyperthermophilic archaeon Thermoproteus uzoniensis encoding a new 32.8 kDa branched-chain amino acid aminotransferase (BCAT) was expressed in Escherichia coli. The recombinant protein TUZN1299 was purified to homogeneity in the PLP-bound form. TUZN1299 was active towards branched-chain amino acids (L-Val, L-Leu, L-Ile) and showed low but detectable activity toward (R)-alpha-methylbenzylamine. The enzyme exhibits high-temperature optimum, thermal stability, and tolerance to organic solvents. The structure of an archaeal BCAT called TUZN1299 was solved for the first time (at 2.0 Å resolution). TUZN1299 has a typical BCAT type IV fold, and the organization of its active site is similar to that of bacterial BCATs. However, there are some differences in the amino acid composition of the active site.


  • Organizational Affiliation

    A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33, bld. 2, Moscow, 119071, Russian Federation. kmb@inbi.ras.ru.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Branched-chain amino acid aminotransferase
A, B, C
307Thermoproteus uzoniensis 768-20Mutation(s): 0 
Gene Names: TUZN_1299
UniProt
Find proteins for F2L0W0 (Thermoproteus uzoniensis (strain 768-20))
Explore F2L0W0 
Go to UniProtKB:  F2L0W0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupF2L0W0
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.168 
  • R-Value Work: 0.120 
  • R-Value Observed: 0.122 
  • Space Group: P 32 1 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 93.54α = 90
b = 93.54β = 90
c = 212.51γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Russian Scientific FundRussian Federation14-24-00172
7th EU Frame Programme (ERA-IB)EIB.12.012

Revision History  (Full details and data files)

  • Version 1.0: 2016-02-24
    Type: Initial release
  • Version 1.1: 2016-03-09
    Changes: Database references
  • Version 1.2: 2024-01-10
    Changes: Data collection, Database references, Refinement description