J 2011

Structure of a Packaging-Defective Mutant of Minute Virus of Mice Indicates that the Genome Is Packaged via a Pore at a 5-Fold Axis

PLEVKA, Pavel, Susan HAFENSTEIN, Lei LI, Anthony, Jr. D'ABRAMO, Susan F. COTMORE et. al.

Basic information

Original name

Structure of a Packaging-Defective Mutant of Minute Virus of Mice Indicates that the Genome Is Packaged via a Pore at a 5-Fold Axis

Authors

PLEVKA, Pavel, Susan HAFENSTEIN, Lei LI, Anthony, Jr. D'ABRAMO, Susan F. COTMORE, Michael G. ROSSMANN and Peter TATTERSALL

Edition

JOURNAL OF VIROLOGY, WASHINGTON, AMER SOC MICROBIOLOGY, 2011, 0022-538X

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 5.402

Organization unit

Central European Institute of Technology

UT WoS

000289787300019

Keywords in English

VP1 N-TERMINUS; FUNCTIONAL IMPLICATIONS; CANINE PARVOVIRUS; DNA-REPLICATION; TYPE-2; PROTEIN; HELICASE; BINDING; CAPSIDS; VIRION

Tags

Změněno: 29/3/2017 14:59, Mgr. Eva Špillingová

Abstract

V originále

The parvovirus minute virus of mice (MVM) packages a single copy of its linear single-stranded DNA genome into preformed capsids, in a process that is probably driven by a virus-encoded helicase. Parvoviruses have a roughly cylindrically shaped pore that surrounds each of the 12 5-fold vertices. The pore, which penetrates the virion shell, is created by the juxtaposition of 10 antiparallel beta-strands, two from each of the 5-fold-related capsid proteins. There is a bottleneck in the channel formed by the symmetry-related side chains of the leucines at position 172. We report here the X-ray crystal structure of the particles produced by a leucine-to-tryptophan mutation at position 172 and the analysis of its biochemical properties. The mutant capsid had its 5-fold channel blocked, and the particles were unable to package DNA, strongly suggesting that the 5-fold pore is the packaging portal for genome entry.