Experimental Data Snapshot

  • Resolution: 1.60 Å
  • R-Value Work: 0.182 

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This is version 1.2 of the entry. See complete history


Purification, characterization, primary structure, crystallization and preliminary crystallographic study of a serine proteinase from Streptomyces fradiae ATCC 14544.

Kitadokoro, K.Tsuzuki, H.Nakamura, E.Sato, T.Teraoka, H.

(1994) Eur J Biochem 220: 55-61

  • DOI: https://doi.org/10.1111/j.1432-1033.1994.tb18598.x
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    A proteinase having wide substrate specificity was isolated from Streptomyces fradiae ATCC 14544. This proteinase, which we propose to call SFase-2, was purified from the culture filtrate by S-Sepharose chromatography. The purified enzyme showed an apparent molecular mass of 19 kDa on SDS/PAGE. When synthetic peptides were used as substrates, SFase-2 showed broad substrate specificity. It also hydrolyzed keratin, elastin and collagen as proteinaceous substrates. It was completely inhibited by diisopropylfluorophosphate and chymostatin, but not by tosylphenylalaninechloromethane, tosyllysinechloromethane or EDTA, indicating that it can be classified as a serine proteinase. The matured protein sequence of SFase-2 was determined by a combination of amino acid sequencing and the DNA sequencing of the gene. SFase-2, consisting of 191 amino acids, is a novel proteinase. It showed 76% similarity in the amino acid sequence with Streptomyces griseus proteinase A [Johnson P. and Smillie L. B. (1974) FEBS Lett. 47, 1-6]. For insight into the three-dimensional structure of SFase-2, we obtained single crystals by the vapor diffusion method using sodium phosphate as a precipitant. These crystals belonged to the orthorhombic, space group P2(1)2(1)2(1) with cell dimensions a = 6.92 nm, b = 7.28 nm, c = 2.99 nm; one molecule was present in the asymmetric unit.

  • Organizational Affiliation

    Shionogi Research Laboratories, Osaka, Japan.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
SERINE PROTEINASE191Streptomyces fradiaeMutation(s): 0 
EC: 3.4.21
Find proteins for P41140 (Streptomyces fradiae)
Explore P41140 
Go to UniProtKB:  P41140
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP41140
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.60 Å
  • R-Value Work: 0.182 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.05α = 90
b = 72.76β = 90
c = 29.84γ = 90
Software Package:
Software NamePurpose

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1996-06-20
    Type: Initial release
  • Version 1.1: 2008-03-25
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance