Linked Life Data

8554319

Source:http://linkedlifedata.com/resource/pubmed/id/8554319

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1996-2-21
pubmed:abstractText
An antifungal polypeptide (AFP) of 51 amino acid residues, secreted by the mould Aspergillus giganteus, has been purified to homogeneity and characterized. The inhibitory effect of this protein on the growth of different microorganisms has been studied. Whereas the growth of many of the filamentous fungi assayed is inhibited, no effect has been observed against yeasts or bacteria. The minimal concentration for total inhibition of the growth is in the range 6 to 25 microM. The antifungal polypeptide does not produce any effect on the growth of the producing mould. The polypeptide promotes aggregation of acidic phospholipid vesicles. A remarkable resistance to proteolysis and a low hydrogen x deuterium exchange have been observed for this protein. The protein does not show any thermal transition up to 80 degrees C when studied by differential scanning calorimetry and infrared spectroscopy. The uv absorbance, fluorescence emission, and circular dichroism (CD) characteristics of this protein have been studied. The protein exhibits a strong positive band at 230 nm as a prominent feature of the CD spectrum in the far uv region. All the spectroscopical properties of the antifungal protein are highly influenced by the abundance of tyrosine residues. These can be grouped in two different populations, buried and exposed, based on the results of pH-titration experiments. Fourier-transform infrared spectroscopy reveals a high content of beta-structure in AFP. Reduction and carboxy-amidomethylation produces a rather unstructured polypeptide as deduced from its spectroscopical properties.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0003-9861
pubmed:author
pubmed:issnType
Print
pubmed:day
20
pubmed:volume
324
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
273-81
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Characterization of the antifungal protein secreted by the mould Aspergillus giganteus.
pubmed:affiliation
Departamento de Bioquímica y Biología Molecular, Facultad de Química, Universidad Complutense, Madrid, Spain.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't