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EP0155360A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method for identifying and characterizing organisms

Assignee: WEBSTER, JOHN A., JR.
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Filing: 1982-09-24
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Granted: —
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Expires: 2002-09-24
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Abstract

Abstract A method of detecting a prokaryotic organism comprises selectively hybridising the DNA of the prokaryotic organism with a detectably labeled prokaryotic ribosomal RNA-information-containing hybridisation probe.

Inventors

  • 👤 John A. Webster, Jr.

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 14:58
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/68; C12Q1/6876; C12Q1/6888; C12Q1/689; C12Q1/6813; C12Q1/6827; C12Q1/683

Claims Analysis

Total Claims: 27
Claim 1
Independent Claim 27 words
A method of detecting a prokaryotic organism, which method comprises selectively hybridising the DNA of the prokaryotic organism with. a detectably labeled prokayotic ribosomal RNA-information-containing hybridisation probe.
Claim 2
Independent Claim 27 words
A method of detecting a prokaryotic organism, which method comprises selectively hybridising the DNA of the prokaryotic organism with. a detectably labeled prokayotic ribosomal RNA-information-containing hybridisation probe.
Claim 3
Dependent Claim 22 words
A method as claimed in Claim 1, wherein the prokaryotic organism is in the presence of or associated with a eukaryotic organism.
Claim 4
Dependent Claim 21 words
A method as claimed in Claim 1 or 2, wherein said ribosomal RNA information-containing nucleic acid is radiolabeled or metal labeled.
Claim 5
Dependent Claim 20 words
A method as claimed in Claim 1, 2 or 3, wherein said ribosomal RNA information-containing hybridisation probe is ribosomal RNA.
Claim 6
Dependent Claim 23 words
A method as claimed in Claim 1, 2 or 3, wherein said ribosomal RNA information-containing hybridisation probe is DNA complementary to ribosomal RNA.
Claim 7
Dependent Claim 29 words
A method as claimed in Claim 1, 2 or 3, wherein said ribosomal RNA information-containing hybridisation probe is DNA obtained by nick-translating or cloning DNA complementary to ribosomal RNA.
Claim 8
Independent Claim 31 words
A method as claimed in any one of Claims 1 to 6, wherein said unknown organism being detected is a cell or cells of a strain in an in vitro culture.
Claim 9
Independent Claim 49 words
A method as claimed in any one of Claims 1 to 7, wherein said unknown organism being detected and said probe organism are both from the same taxonomic group selected from the group consisting of a kingdom, subkingdom, division, subdivision, phylum, subphylum, class, subclass, order, family, tribe or genus.
Claim 10
Independent Claim 37 words
A method as claimed in any one of Claims 1 to 8, which comprises detecting for the presence of a nucleic acid sequence or sequences creating a taxon below the rank of species or an infrasubspecific subdivision.
Claim 11
Independent Claim 28 words
A method as claimed in any one of Claims 1 to 9, wherein said prokaryotic organism being detected is selectively being detected while present in an eukaryotic organism.
Claim 12
Independent Claim 20 words
A method as claimed in any one of Claims . 1 to 10, wherein said prokaryotic organism is a bacterium.
Claim 13
Independent Claim 29 words
A method as claimed in any one of Claims 1 to 9, wherein said unknown bacterium is present in a fermentation medium or in a secretion or excretion product.
Claim 14
Independent Claim 24 words
A method as claimed in any one of Claims 3 to 9, wherein said unknown bacterium is present in or associated with eukaryotic tissue.
Claim 15
Dependent Claim 20 words
A method as claimed in Claim 13, wherein said bacterium is present in or associated with animal or plant cells.
Claim 16
Dependent Claim 24 words
A method as claimed in Claim 14, wherein said bacterium is present in or associated with human cells, or associated with plant root cells.
Claim 17
Independent Claim 22 words
A method as claimed in any one of Claims 1 to 15, wherein said unknown bacterium is pathogenic towards plants or animals.
Claim 18
Dependent Claim 21 words
A method as claimed in Claim 9, wherein said nucleic acid sequence or sequences are all part of a bacteriophage genome.
Claim 19
Dependent Claim 27 words
A method as claimed in Claim 9, wherein said nucleic acid sequence or sequences are all part of an extrachromosomal genetic element, a plasmid, or an episome.
Claim 20
Dependent Claim 22 words
A method as claimed in Claim 9, wherein said sequence or sequences code for an R-factor or for an antibiotic resistance factor.
Claim 21
Dependent Claim 23 words
A method as claimed in Claim 14, wherein said bacterium is present in or.associated with human cells, or associated with plant root cells.
Claim 22
Independent Claim 22 words
A method as claimed in any one of Claims 1 to 15, wherein said unknown bacterium is pathogenic towards plants or animals.
Claim 23
Dependent Claim 21 words
A method as claimed in Claim 9, wherein said nucleic acid sequence or sequences are all part of a bacteriophage genome..
Claim 24
Dependent Claim 27 words
A method as claimed in Claim 9, wherein said nucleic acid sequence or sequences are all part of an extrachromosomal genetic element, a plasmid, or an ep.isome.
Claim 25
Dependent Claim 22 words
A method as claimed in Claim 9, wherein said sequence or sequences code for an R-factor or for an antibiotic resistance factor.
Claim 26
Independent Claim 30 words
A method of detecting a prokaryotic organism, which method comprises selectively hybridising ribosomal RNA-information-containing nucleic acid of the prokaryotic organism with a complementary detectably labelled prokaryotic ribosomal RNA-information-containing hybridisation probe.
Claim 27
Independent Claim 30 words
A method of detecting a prokaryotic organism, which method comprises selectively hybridising ribosomal RNA-information-containing nucleic acid of the prokaryotic organism with a complementary detectably labelled prokaryotic ribosomal RNA-information-containing hybridisation probe.

References Cited (Backward Citations)

DE2823573A1 Cited
GB2019408A Cited
US4302204A Cited

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