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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
|
pubmed:dateCreated |
1995-8-17
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pubmed:abstractText |
Wild-type trypanosomal triosephosphate isomerase (wtTIM) is a very tight dimer. The interface residue His-47 of wtTIM has been mutated into an asparagine. Ultracentrifugation data show that this variant (H47N) only dimerises at protein concentrations above 3 mg/ml. H47N has been characterised at a protein concentration where it is predominantly a monomer. Circular dichroism measurements in the near-UV and far-UV show that this monomer is a compactly folded protein with secondary structure similar as in wtTIM. The thermal stability of the monomeric H47N is decreased compared to wtTIM: temperature gradient gel electrophoresis (TGGE) measurements give Tm-values of 41 degrees C for wtTIM, whereas the Tm-value for the monomeric form of H47N is approximately 7 degrees C lower.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Jul
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pubmed:issn |
0014-5793
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
3
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pubmed:volume |
367
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
315-8
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:7607330-Animals,
pubmed-meshheading:7607330-Circular Dichroism,
pubmed-meshheading:7607330-Kinetics,
pubmed-meshheading:7607330-Macromolecular Substances,
pubmed-meshheading:7607330-Mutagenesis, Site-Directed,
pubmed-meshheading:7607330-Protein Structure, Secondary,
pubmed-meshheading:7607330-Protozoan Proteins,
pubmed-meshheading:7607330-Structure-Activity Relationship,
pubmed-meshheading:7607330-Temperature,
pubmed-meshheading:7607330-Triose-Phosphate Isomerase,
pubmed-meshheading:7607330-Trypanosoma brucei brucei,
pubmed-meshheading:7607330-Ultracentrifugation
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pubmed:year |
1995
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pubmed:articleTitle |
An interface point-mutation variant of triosephosphate isomerase is compactly folded and monomeric at low protein concentrations.
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pubmed:affiliation |
EMBL, Heidelberg, Germany.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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