Linked Life Data

6511787

Source:http://linkedlifedata.com/resource/pubmed/id/6511787

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
24
pubmed:dateCreated
1985-1-25
pubmed:abstractText
Lysophospholipase from human eosinophils is a protein previously considered based upon antigenic, enzymatic, and electrophoretic similarities to be the single component of Charcot-Leyden crystals, which are formed in vivo in association with eosinophilic diseases. The identity of eosinophil lysophospholipase and solubilized Charcot-Leyden crystal protein is now established by biochemical criteria, and a basis for the ease of aggregation and crystallization of the protein is identified in its prominent hydrophobicity. Chromatographically purified enzyme and Charcot-Leyden crystal protein formed in vitro functioned as lysophospholipases with identical Michaelis constants (Km approximately equal to 22 microM) for the substrate lysopalmitoylphosphatidylcholine and had blocked amino-terminal residues and almost identical amino acid compositions. The propensity of lysophospholipase to aggregate was not due to extensive intermolecular disulfide bonding because it contained a single cysteine residue as assessed by amino acid analyses and incorporated 0.986 mol of p-chloromercuribenzoic acid/mol of native enzyme or 0.958 mol of iodoacetic acid/mol of reduced and denatured enzyme. By equilibrium dialysis, lysophospholipase bound 3.820 g of detergent/g of protein in 1% sodium dodecyl sulfate and 0.506 g of detergent/g of protein in 10 mM sodium deoxycholate. In addition, monomeric protein demonstrated enhanced binding of detergent as evidenced by its aberrantly rapid electrophoretic mobility in 1%, but not 0.1%, sodium dodecyl sulfate. The hydrophobic nature of this protein, which accounts for 10% of the protein of the eosinophil, may contribute to its unique propensity for crystallization in vivo.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
25
pubmed:volume
259
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
15100-5
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1984
pubmed:articleTitle
Biochemical characterization of human eosinophil Charcot-Leyden crystal protein (lysophospholipase).
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't