J Gen Virol Email Content Delivery
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Gen Virol 74 (1993), 555-561; DOI 10.1099/0022-1317-74-4-555
© 1993 Society for General Microbiology
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Turnbull-Ross, A. D.
Right arrow Articles by Murant, A. F.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Turnbull-Ross, A. D.
Right arrow Articles by Murant, A. F.
Agricola
Right arrow Articles by Turnbull-Ross, A. D.
Right arrow Articles by Murant, A. F.

Sequence analysis of the parsnip yellow fleck virus polyprotein: evidence of affinities with picornaviruses

A. D. Turnbull-Ross, M. A. Mayo, B. Reavy and A. F. Murant

Scottish Crop Research Institute, Invergowrie, Dundee DD2 5DA, U.K.

The 9.9 kb monopartite ssRNA genome of parsnip yellow fleck virus (PYFV) encodes a polyprotein from which the functional proteins are assumed to arise by proteolytic cleavage. The 22.5K, 26K and 31K particle proteins were mapped in the polyprotein by determining their N-terminal amino acid sequences, and were found to begin at amino acid positions 395, 589 and 811, respectively. There could be polypeptide(s) of up to 43K on the N-terminal side of the particle protein sequences. A region within the 26K particle protein has sequence similarity to the VP3 particle protein of picornaviruses. Three other regions in the PYFV polyprotein have sequence similarity to regions thought to have RNA polymerase, NTP-binding and protease functions in the polyproteins of picornaviruses, comoviruses and nepoviruses. Despite these similarities in sequence and in genome organization to viruses in the picorna-like supergroup, PYFV is distinct from all other plant and animal viruses described. This justifies placing it in a separate plant virus genus for which the name ‘sequivirus’ has been proposed.

Received 5 October 1992; accepted 24 November 1992.




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
INT J SYST EVOL MICROBIOL MICROBIOLOGY J GEN VIROL
J MED MICROBIOL ALL SGM JOURNALS
Copyright © 1993 by the Society for General Microbiology.