View source for 2sfa


==SERINE PROTEINASE FROM STREPTOMYCES FRADIAE ATCC 14544==
<StructureSection load='2sfa' size='340' side='right'caption='[[2sfa]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2sfa]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptomyces_fradiae Streptomyces fradiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2SFA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2SFA FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.6&#8491;</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2sfa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2sfa OCA], [https://pdbe.org/2sfa PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2sfa RCSB], [https://www.ebi.ac.uk/pdbsum/2sfa PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2sfa ProSAT]</span></td></tr>
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== Function ==
[https://www.uniprot.org/uniprot/SFAS2_STRFR SFAS2_STRFR] Broad substrate specificity.
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/sf/2sfa_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2sfa ConSurf].
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== Publication Abstract from PubMed ==
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.

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 Eur J Biochem. 1994 Feb 15;220(1):55-61. PMID:8119298<ref>PMID:8119298</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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==See Also==
*[[Proteinase 3D structures|Proteinase 3D structures]]
== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Streptomyces fradiae]]
[[Category: Kitadokoro K]]
[[Category: Tsuzuki H]]