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1996-02-26
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Document 0124
DOCN M9620124
TI Genetic and antigenic characterization of caev (caprine
arthritis-encephalitis virus) recombinant transmembrane protein.
DT 9602
AU Rosati S; Pittau M; Tolari F; Erre G; Kwang J; Dipartimento di
Produzioni Animali, Epidemiologia ed Ecologia,; Universita di Torino,
Italy.
SO Vet Microbiol. 1995 Aug;45(4):363-70. Unique Identifier : AIDSLINE
MED/96021590
AB The env gene fragment of an Italian strain of Caprine Arthritis
Encephalitis virus (CAEV) coding for the hydrophilic region of
transmembrane protein was amplified, cloned and expressed in prokaryotic
system as fusion protein with glutathione-S-transferase. Sequence
analysis revealed 63 to 66% amino acid homology, when compared with
three ovine lentiviruses and 83% when compared with one caprine
lentivirus. The recombinant transmembrane protein was efficiently
expressed, purified under denaturing conditions and used as antigen in
western blotting and ELISA. Sera from clinically diseased goats strongly
reacted in western blotting and naturally infected animals seroconverted
between 20 and 33 weeks of age. An indirect ELISA performed with this
antigen showed improved sensitivity in comparison with agar gel
immunodiffusion test. Our results confirm that transmembrane protein is
an important immunological marker in CAEV infection and its use as
antigen may enhance the validity of serological diagnosis of Caprine
Arthritis Encephalitis.
DE Amino Acid Sequence Animal Arthritis-Encephalitis Virus,
Caprine/*GENETICS Base Sequence Blotting, Western Cloning, Molecular
Comparative Study Enzyme-Linked Immunosorbent Assay Gene Expression
Gene Products, env/BIOSYNTHESIS/*CHEMISTRY/*GENETICS *Genes, env
Glutathione Transferases Goats Immunodiffusion Lentivirus/GENETICS
Molecular Sequence Data Recombinant Fusion
Proteins/BIOSYNTHESIS/CHEMISTRY/IMMUNOLOGY Reproducibility of Results
Sensitivity and Specificity Sequence Homology, Amino Acid Sequence
Homology, Nucleic Acid Sheep JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).