6A6E

Crystal structure of thermostable Cysteine desulfurase (FiSufS) from thermophilic Fervidobacterium Islandicum AW-1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.09 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.142 
  • R-Value Observed: 0.144 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

The sulfur formation system mediating extracellular cysteine-cystine recycling in Fervidobacterium islandicum AW-1 is associated with keratin degradation.

Jin, H.S.Dhanasingh, I.Sung, J.Y.La, J.W.Lee, Y.Lee, E.M.Kang, Y.Lee, D.Y.Lee, S.H.Lee, D.W.

(2020) Microb Biotechnol 

  • DOI: 10.1111/1751-7915.13717
  • Primary Citation of Related Structures:  
    6A6F, 6A6E, 6A6G

  • PubMed Abstract: 
  • Most extremophilic anaerobes possess a sulfur formation (Suf) system for Fe-S cluster biogenesis. In addition to its essential role in redox chemistry and stress responses of Fe-S cluster proteins, the Suf system may play an important role in keratin degradation by Fervidobacterium islandicum AW-1 ...

    Most extremophilic anaerobes possess a sulfur formation (Suf) system for Fe-S cluster biogenesis. In addition to its essential role in redox chemistry and stress responses of Fe-S cluster proteins, the Suf system may play an important role in keratin degradation by Fervidobacterium islandicum AW-1. Comparative genomics of the order Thermotogales revealed that the feather-degrading F. islandicum AW-1 has a complete Suf-like machinery (SufCBDSU) that is highly expressed in cells grown on native feathers in the absence of elemental sulfur (S 0 ). On the other hand, F. islandicum AW-1 exhibited a significant retardation in the Suf system-mediated keratin degradation in the presence of S 0 . Detailed differential expression analysis of sulfur assimilation machineries unveiled the mechanism by which an efficient sulfur delivery from persulfurated SufS to SufU is achieved during keratinolysis under sulfur starvation. Indeed, addition of SufS-SufU to cell extracts containing keratinolytic proteases accelerated keratin decomposition in vitro under reducing conditions. Remarkably, mass spectrometric analysis of extracellular and intracellular levels of amino acids suggested that redox homeostasis within cells coupled to extracellular cysteine and cystine recycling might be a prerequisite for keratinolysis. Taken together, these results suggest that the Suf-like machinery including the SufS-SufU complex may contribute to sulfur availability for an extracellular reducing environment as well as intracellular redox homeostasis through cysteine released from keratin hydrolysate under starvation conditions.


    Organizational Affiliation

    Department of Biotechnology, Yonsei University, Seoul, 03722, South Korea.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cysteine desulfuraseA, B, C, D425Fervidobacterium islandicumMutation(s): 0 
Gene Names: NA23_08315
EC: 2.8.1.7
UniProt
Find proteins for A0A1B0VPZ3 (Fervidobacterium islandicum)
Explore A0A1B0VPZ3 
Go to UniProtKB:  A0A1B0VPZ3
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PLP (Subject of Investigation/LOI)
Query on PLP

Download Ideal Coordinates CCD File 
E [auth A], GA [auth D], Q [auth B], W [auth C]PYRIDOXAL-5'-PHOSPHATE
C8 H10 N O6 P
NGVDGCNFYWLIFO-UHFFFAOYSA-N
 Ligand Interaction
CIT
Query on CIT

Download Ideal Coordinates CCD File 
AA [auth C] , BA [auth C] , EA [auth C] , G [auth A] , J [auth A] , JA [auth D] , KA [auth D] , LA [auth D] , 
AA [auth C],  BA [auth C],  EA [auth C],  G [auth A],  J [auth A],  JA [auth D],  KA [auth D],  LA [auth D],  R [auth B]
CITRIC ACID
C6 H8 O7
KRKNYBCHXYNGOX-UHFFFAOYSA-N
 Ligand Interaction
PEG
Query on PEG

Download Ideal Coordinates CCD File 
CA [auth C] , DA [auth C] , FA [auth C] , H [auth A] , L [auth A] , M [auth A] , O [auth A] , P [auth A] , 
CA [auth C],  DA [auth C],  FA [auth C],  H [auth A],  L [auth A],  M [auth A],  O [auth A],  P [auth A],  S [auth B],  T [auth B],  U [auth B]
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

Download Ideal Coordinates CCD File 
F [auth A] , HA [auth D] , I [auth A] , IA [auth D] , K [auth A] , N [auth A] , V [auth B] , X [auth C] , 
F [auth A],  HA [auth D],  I [auth A],  IA [auth D],  K [auth A],  N [auth A],  V [auth B],  X [auth C],  Y [auth C],  Z [auth C]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CSS
Query on CSS
A, B, C, DL-PEPTIDE LINKINGC3 H7 N O2 S2CYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.09 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.142 
  • R-Value Observed: 0.144 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 106.302α = 90
b = 218.716β = 90
c = 89.63γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment  



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Korea, Republic Of2014R1A2A2A01006765
Korea, Republic Of2009-0064846

Revision History  (Full details and data files)

  • Version 1.0: 2019-10-09
    Type: Initial release
  • Version 1.1: 2020-11-25
    Changes: Database references
  • Version 1.2: 2020-12-30
    Changes: Database references