Inhibition of viral transcriptase by immunoglobulin directed against the nucleocapsid NS protein of vesicular stomatitis virus.

Abstract:

:In search of an anti-transcriptase, antibody was raised in rabbits to partially purified, soluble NS protein present in cytoplasmic extracts of cells infected with the Indiana serotype of vesicular stomatitis (VSInd) virus. This antiserum gave specific reactions of identity by agar immunodiffusion with both cytoplasmic and virion NS protein. NS antiserum also preferentially precipitated NS 3-H-labeled protein from infected cytoplasmic extracts, whereas anti-whole VSInd virion serum also precipitated N 3-H-labeled protein from extracts both of infected cytoplasm and virion nucleocapsids. Transcriptase activity of VSInd cytoplasmic or virion-derived nucleocapsids was effectively inhibited by ribonuclease-free immunoglubulin prepared from homologous NSInd antiserum or from anti-whole vesicular stomatitis virus serum. Transcriptase activity of heterologous New Jersey serotype (VSNJ) nucleocapsids and virions was not appreciably affected by anti-NSInd or by anti-whole VSInd virion gamma globulin. Anti-NS gamma glubulin immediately switched off RNA synthesis by actively transcribing VSInd nucleocapsids, a finding which suggests that NS antibody inhibits RNA chain elongation.

journal_name

J Virol

journal_title

Journal of virology

authors

Imblum RL,Wagner RR

doi

10.1128/JVI.15.6.1357-1366.1975

subject

Has Abstract

pub_date

1975-06-01 00:00:00

pages

1357-66

issue

6

eissn

0022-538X

issn

1098-5514

journal_volume

15

pub_type

杂志文章