Fatty acyltranferases in serum in cystic fibrosis (CF) patients

Conference · Fri May 01 00:00:00 EDT 1987 · Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States)

OSTI ID:6281344

Zielenski, J; Newman, L J; Slomiany, B L; Slomiany, A

Studies on serum and gastrointestinal secretion from CF patient is suggest that defective accumulation of mucus in gastrointestinal tract and excessive amount of a protease resistant peptides in serum are related to the abnormal activity of enzymes responsible for fatty acylation of proteins. Here, the authors investigated the fatty acyltransferase activities in serum of normal and CF patients. A 15 l of serum was mixed with 0.85 nmol ( UC)palmitoyl CoA, 200 g of serine and threonine and incubated at 37C for 30 min. The incubates were immediately frozen, dried extracted with C/M and chromatographed in chloroform/methanol/water. The incorporation of ( UC)palmitate was determined using linear radioscanner and authoradiography. The results of HPTLC revealed that CF serum in addition of ACAT and LCAT contained enzymes responsible for the transfer of ( UC)palmitate to monoacylphosphoglycerides, and serine and threonine. In normal serum the formation of a small amount of palmitoyl serine and palmitoyl threonine was also observed but the acylation of monoacylphosphoglycerides was not detectable. The authors conclude that in cystic fibrosis the abnormal fatty acyltransferases are responsible for the occurrence of protease resistant glycoprotein, unusual peptides in serum and possibly for the modification of membrane proteins and lipids.

• Research Organization: New York Medical College, Valhalla
• OSTI ID: 6281344
• Report Number(s): CONF-870644-; TRN: 87-028949
• Journal Information: Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States), Vol. 46:6; Conference: 78. annual meeting of the American Society of Biological Chemists conference, Philadelphia, PA, USA, 7 Jun 1987
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
HEREDITARY DISEASES
PATHOGENESIS
PROTEINS
ACYLATION
TRANSFERASES
ENZYME ACTIVITY
AUTORADIOGRAPHY
CARBON 14 COMPOUNDS
HEXADECANOIC ACID
PATIENTS
TRACER TECHNIQUES
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
DISEASES
ENZYMES
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
MONOCARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
550901* - Pathology- Tracer Techniques