Molecular genetics of ØX174 Lysis /

(PPlases), suggesting that S]yD is a member of the FKBP

Bibliographic Details
Main Author: Fang, Qiu, 1968-
Format: Thesis eBook
Language:English
Published: [Place of publication not identified] : [publisher not identified] ; 1996.
Subjects:
Online Access:Link to OAKTrust copy
Description
Summary:(PPlases), suggesting that S]yD is a member of the FKBP
ability to lyse the host cells carrying slvd null alleles
abundance. The sequence of the N-terminal 150 residues of
and the H. influenza slyd gene is fully capable of
because multiple loci were involved. slyd is able to
because of a catastrophic defect in the developing septum.
been found, suggesting that the pos4b changes are the only
changes sufficient to overcome the slyD- block. Host mutants
complement the growth defect caused by slyd] in E. coli C,
complementing E. coli slyd in terms of lysis function. A
context of the phage or from a plasmid vector, to lyse the
direct selection of lysis proficient E plasmids in a slyd-
E, has been repeatedly isolated and no other E mutant has
eliminate the ability of the E gene, expressed in its normal
eliminating the lysis ability of the E pos4b mutant were
entirely imbedded in an alternate reading frame of another
essential gene. E has a hydrophobic N-terminus with one
group of slyd missense and deletion mutants that block the
host. The pos4b mutant, comprising two missense changes in
host. slyd encodes a 196 aa cytoplasmic protein of moderate
isolated, but did not map to a chromosomal locus, probably
lytic function of the OX174 E gene but retain S]yD protein
mechanism of action is unknown. Phage-infected cells lyse
of the primary sequence is rich in basic and hydrophilic
only viral cistron required for lysis of the host, is
protein family. In this study, E mutants restoring the
provide important tools for further genetic and biochemical
putative membrane-spanning domain, whereas the C-terminal 2/3
Recessive knockout mutations in single host locus slyD
residues. E has been localized to the inner membrane but its
S]yD is homologous to FK506binding proteins (FKBP), an
stability were isolated, characterized, and mapped to a
structure modeled on a mammalian FKBP. These slyd mutants
studies on the unique molecular mechanism of lysis by OX174.
The 91 codon E gene of the small ssDNA phage OX 1 74, the
ubiquitous family of peptidyl prolyl cis-trans isomerases
were isolated by different mutagenesis methods followed by
Item Description:"Major subject: Biochemistry".
In title, symbols are used.
Vita.
Physical Description:xi, 114 leaves : illustrations ; 28 cm.
Also available online.
Issued also on microfiche from Lange Micrographics.
Bibliography:Includes bibliographical references.