3VV5

Crystal structure of TTC0807 complexed with (S)-2-aminoethyl-L-cysteine (AEC)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.191 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Two ATP-Binding Cassette Transporters Involved in (S)-2-Aminoethyl-Cysteine Uptake in Thermus thermophilus

Kanemaru, Y.Hasebe, F.Tomita, T.Kuzuyama, T.Nishiyama, M.

(2013) J Bacteriol 195: 3845-3853

  • DOI: 10.1128/JB.00202-13
  • Primary Citation of Related Structures:  
    3VVD, 3VVE, 3VVF, 3VV5

  • PubMed Abstract: 
  • Thermus thermophilus exhibits hypersensitivity to a lysine analog, (S)-2-aminoethyl-cysteine (AEC). Cosmid libraries were constructed using genomes from two AEC-resistant mutants, AT10 and AT14, and the cosmids that conferred AEC resistance on the wild-type strain were isolated ...

    Thermus thermophilus exhibits hypersensitivity to a lysine analog, (S)-2-aminoethyl-cysteine (AEC). Cosmid libraries were constructed using genomes from two AEC-resistant mutants, AT10 and AT14, and the cosmids that conferred AEC resistance on the wild-type strain were isolated. When the cosmid library for mutant AT14 was screened, two independent cosmids, conferring partial AEC resistance to the wild type, were obtained. Two cosmids carried a common genomic region from TTC0795 to TTC0810. This region contains genes encoding an ATP-binding cassette (ABC) transporter consisting of TTC0806/TTC0795, using TTC0807 as the periplasmic substrate-binding protein. Sequencing revealed that AT14 carries mutations in TTC0795 and TTC0969, causing decreases in the thermostability of the products. TTC0969 encodes the nucleotide-binding protein of a different ABC transporter consisting of TTC0967/TTC0968/TTC0969/TTC0970 using TTC0966 as the periplasmic substrate-binding protein. By similar screening for cosmids constructed for the mutant AT10, mutations were found at TTC0807 and TTC0969. Mutation in either of the transporter components gave partial resistance to AEC in the wild-type strain, while mutations of both transporters conferred complete AEC resistance. This result indicates that both transporters are involved in AEC uptake in T. thermophilus. To elucidate the mechanism of AEC uptake, crystal structures of TTC0807 were determined in several substrate-binding forms. The structures revealed that TTC0807 recognizes various basic amino acids by changing the side-chain conformation of Glu19, which interacts with the side-chain amino groups of the substrates.


    Organizational Affiliation

    Biotechnology Research Center, The University of Tokyo, Tokyo, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Amino acid ABC transporter, binding proteinA, B260Thermus thermophilus HB27Mutation(s): 0 
Gene Names: TTC0807TT_C0807
UniProt
Find proteins for Q72JG5 (Thermus thermophilus (strain ATCC BAA-163 / DSM 7039 / HB27))
Explore Q72JG5 
Go to UniProtKB:  Q72JG5
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SLZ (Subject of Investigation/LOI)
Query on SLZ

Download Ideal Coordinates CCD File 
C [auth A], D [auth B]L-THIALYSINE
C5 H12 N2 O2 S
GHSJKUNUIHUPDF-BYPYZUCNSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
E [auth B]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.191 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.573α = 90
b = 68.603β = 90
c = 98.527γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-06-26
    Type: Initial release
  • Version 1.1: 2013-09-04
    Changes: Database references