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Detection of the Wolbachia-encoded DNA binding protein, HU beta, in mosquito gonads.

Abstract：

:Wolbachia are obligate intracellular bacteria that cause cytoplasmic incompatibility in mosquitoes. In an incompatible cross, eggs of uninfected females fail to hatch when fertilized by sperm from infected males. We used polyacrylamide gel electrophoresis and tandem mass spectrometry to identify Wolbachia proteins in infected mosquito gonads. These included surface proteins with masses of 25 and 18 kDa and the DNA binding protein, HU beta. Using reverse transcriptase polymerase chain reaction, we showed that the HU gene is transcribed in Wolbachia-infected Culex pipiens and Aedes albopictus mosquitoes. We sequenced HU genes from four Wolbachia strains and compared deduced protein sequences with additional homologs from the databases. Among the Rickettsiales, Wolbachia HU has distinct N- and C-terminal basic/acidic amino acid motifs as well as a pair of conserved, cysteine residues.

journal_name

Insect Biochem Mol Biol

journal_title

Insect biochemistry and molecular biology

authors

Beckmann JF,Markowski TW,Witthuhn BA,Fallon AM

doi

10.1016/j.ibmb.2012.12.007

subject

Has Abstract

pub_date

2013-03-01 00:00:00

pages

272-9

issue

3

eissn

0965-1748

issn

1879-0240

pii

S0965-1748(12)00194-4

journal_volume

43

pub_type

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