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Volume 148, Issue 1

Immunodominant membrane proteins from two phytoplasmas in the aster yellows clade (chlorante aster yellows and clover phyllody) are highly divergent in the major hydrophilic region

The GenBank accession numbers for the sequences reported in this paper are AF244540 and AF244541 for AY-C and CP, respectively.

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Abstract

The mechanisms by which phytoplasmas interact with their hosts are not understood. Mollicute membrane proteins may play a role in such interactions and therefore the genes encoding immunodominant proteins from two phytoplasmas, aster yellows and clover phyllody, which fall within the largest taxonomic subclade of the phytoplasmas, have been cloned and characterized. The putative translation products, antigenic membrane proteins (Amps), of these genes have properties which are typical for bacterial membrane proteins, and which suggest that each has a single large extracellular hydrophilic domain held by a transmembrane region near the C-terminus, with only a short C-terminal intracellular sequence. Both of the Amps characterized here have bacterial leader sequences which are cleaved during maturation. Whilst the signal peptide and transmembrane regions of the two proteins are very similar, the major hydrophilic domains are highly divergent in both size and sequence. The Amps from the two phytoplasmas are also different in structure and sequence from the immunodominant membrane proteins of three other phytoplasmas whose genes have been cloned previously.

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Keyword(s): AMP, antigenic membrane protein , AP, apple proliferation , AY, aster yellows , AY-C, chlorante isolate of aster yellows , AY-PY, primula yellows isolate of aster yellows , CP, clover phyllody , E/H/T, export leader, hydrophilic and transmembrane domains, respectively, in the putative AMP , host–pathogen interactions , serological detection in planta , SPWB, sweet potato witches’ broom phytoplasma and WX, western X phytoplasma
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2002-01-01
2024-04-19
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Immunodominant membrane proteins from two phytoplasmas in the aster yellows clade (chlorante aster yellows and clover phyllody) are highly divergent in the major hydrophilic regionThe GenBank accession numbers for the sequences reported in this paper are AF244540 and AF244541 for AY-C and CP, respectively.
Microbiology 148, 157 (2002); https://doi.org/10.1099/00221287-148-1-157
/content/journal/micro/10.1099/00221287-148-1-157
/content/journal/micro/10.1099/00221287-148-1-157
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