Abstract
The crystal structure of the unliganded form of Bacillus stearothermophilus phosphofructokinase (BsPFK) was determined using molecular replacement to 2.8 Å resolution (Protein Data Bank entry 3U39 ). The apo BsPFK structure serves as the basis for the interpretation of any structural changes seen in the binary or ternary complexes. When the apo BsPFK structure is compared with the previously published liganded structures of BsPFK, the structural impact that the binding of the ligands produces is revealed. This comparison shows that the apo form of BsPFK resembles the substrate-bound form of BsPFK, a finding that differs from previous predictions.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
MeSH terms
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Allosteric Regulation / genetics
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Apoenzymes / chemistry
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Apoenzymes / genetics
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Apoenzymes / metabolism
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Bacterial Proteins / chemistry*
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Bacterial Proteins / genetics
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Bacterial Proteins / metabolism
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Crystallography, X-Ray
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Fructosephosphates / chemistry
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Fructosephosphates / metabolism
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Geobacillus stearothermophilus / enzymology*
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Geobacillus stearothermophilus / genetics
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Ligands
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Phosphofructokinases / chemistry*
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Phosphofructokinases / genetics
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Phosphofructokinases / metabolism
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Protein Binding / genetics
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Substrate Specificity / genetics
Substances
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Apoenzymes
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Bacterial Proteins
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Fructosephosphates
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Ligands
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fructose-6-phosphate
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Phosphofructokinases
Associated data
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PDB/1MTO
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PDB/1PFK
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PDB/1ZXX
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PDB/2PFK
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PDB/3PFK
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PDB/3U39
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PDB/4PFK
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PDB/6PFK