1DT1

THERMUS THERMOPHILUS CYTOCHROME C552 SYNTHESIZED BY ESCHERICHIA COLI

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.210 

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Literature

Integrity of thermus thermophilus cytochrome c552 synthesized by Escherichia coli cells expressing the host-specific cytochrome c maturation genes, ccmABCDEFGH: biochemical, spectral, and structural characterization of the recombinant protein.

Fee, J.A., Chen, Y., Todaro, T.R., Bren, K.L., Patel, K.M., Hill, M.G., Gomez-Moran, E., Loehr, T.M., Ai, J., Thony-Meyer, L., Williams, P.A., Stura, E., Sridhar, V., McRee, D.E.

(2000) Protein Sci 9: 2074-2084

  • DOI: https://doi.org/10.1110/ps.9.11.2074
  • Primary Citation of Related Structures:  
    1DT1

  • PubMed Abstract: 

    • We describe the design of Escherichia coli cells that synthesize a structurally perfect, recombinant cytochrome c from the Thermus thermophilus cytochrome c552 gene. Key features are (1) construction of a plasmid-borne, chimeric cycA gene encoding an Escherichia coli-compatible, N-terminal signal sequence (MetLysIleSerIleTyrAlaThrLeu AlaAlaLeuSerLeuAlaLeuProAlaGlyAla) followed by the amino acid sequence of mature Thermus cytochrome c552; and (2) coexpression of the chimeric cycA gene with plasmid-borne, host-specific cytochrome c maturation genes (ccmABCDEFGH) ...

    We describe the design of Escherichia coli cells that synthesize a structurally perfect, recombinant cytochrome c from the Thermus thermophilus cytochrome c552 gene. Key features are (1) construction of a plasmid-borne, chimeric cycA gene encoding an Escherichia coli-compatible, N-terminal signal sequence (MetLysIleSerIleTyrAlaThrLeu AlaAlaLeuSerLeuAlaLeuProAlaGlyAla) followed by the amino acid sequence of mature Thermus cytochrome c552; and (2) coexpression of the chimeric cycA gene with plasmid-borne, host-specific cytochrome c maturation genes (ccmABCDEFGH). Approximately 1 mg of purified protein is obtained from 1 L of culture medium. The recombinant protein, cytochrome rsC552, and native cytochrome c552 have identical redox potentials and are equally active as electron transfer substrates toward cytochrome ba3, a Thermus heme-copper oxidase. Native and recombinant cytochromes c were compared and found to be identical using circular dichroism, optical absorption, resonance Raman, and 500 MHz 1H-NMR spectroscopies. The 1.7 A resolution X-ray crystallographic structure of the recombinant protein was determined and is indistinguishable from that reported for the native protein (Than, ME, Hof P, Huber R, Bourenkov GP, Bartunik HD, Buse G, Soulimane T, 1997, J Mol Biol 271:629-644). This approach may be generally useful for expression of alien cytochrome c genes in E. coli.

    Organizational Affiliation: 

    Department of Biology, University of California at San Diego, La Jolla 92093, USA. jfee@ucsd.edu



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CYTOCHROME C552129Thermus thermophilus HB8Mutation(s): 0 
Gene Names: cycA, TTHA1423
UniProt
Find proteins for Q5SME3 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SME3 
Go to UniProtKB:  Q5SME3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SME3
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEC
Query on HEC
Download Ideal Coordinates CCD File 
B [auth A]HEME C
C34 H34 Fe N4 O4
HXQIYSLZKNYNMH-LJNAALQVSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.210 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.9α = 90
b = 86.9β = 90
c = 31.85γ = 120
Software Package:
Software NamePurpose
XFITdata reduction
SHELXL-97refinement
MOSFLMdata reduction
CCP4data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-02-18
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Source and taxonomy, Version format compliance
  • Version 1.3: 2018-01-31
    Changes: Experimental preparation
  • Version 2.0: 2021-03-03
    Changes: Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary