Document Detail

Chemical characterization of a rabbit leukocytic pyrogen.
MedLine Citation:
PMID:  7140775     Owner:  NLM     Status:  MEDLINE    
Crude pyrogen was obtained by stimulating 1.4 x 10(12) peritoneal-exudate leukocytes from rabbits in vitro with Escherichia coli endotoxin. A pyrogen molecule was isolated by ammonium-sulfate precipitation, polyacrylamide gel electrophoresis at pH 5.5 and 8.9, and gel filtration on Bio-Gel P-100. These procedures yielded a pyrogenic fraction which was electrophoretically and immunologically homogeneous. The pyrogenicity was 50 ng/kg of rabbit. This leukocyte pyrogen consisted of a protein with a molecular weight of approximately 14 000. Amino-acid analysis showed high amounts of glutamic acid and glycine; methionine and tryptophan were present in small quantities. Arginine was found to be the N-terminal amino acid. The molecule contained about 0.8% neutral sugar and 0.7% lipids. Its approximate isoelectric point in citrate/phosphate buffer was 4.2. The activity was lost by lyophilization and storage at - 18 degrees C for six months. The data presented here are the first detailed characterization of a rabbit leukocyte pyrogen. The properties in common to leukocytic pyrogen and interleukin 1 are discussed.
F Pacák; R Siegert
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  European journal of biochemistry / FEBS     Volume:  127     ISSN:  0014-2956     ISO Abbreviation:  Eur. J. Biochem.     Publication Date:  1982 Oct 
Date Detail:
Created Date:  1983-01-19     Completed Date:  1983-01-19     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0107600     Medline TA:  Eur J Biochem     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  375-80     Citation Subset:  IM    
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MeSH Terms
Amino Acids / analysis
Chemical Phenomena
Molecular Weight
Proteins / isolation & purification*
Reg. No./Substance:
0/Amino Acids; 0/Interleukin-1; 0/Proteins; 0/leukocyte endogenous mediator

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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