Mass spectrometric detection of polypeptides
First Claim
Patent Images
1. A process for obtaining information on a sequence of a target nucleic acid molecule by determining the identity of a polypeptide encoded by the nucleic acid molecule, comprising the steps of:
- a) preparing the encoded polypeptide from a target nucleic acid molecule by in vitro translation, or by in vitro transcription followed by translation, of the target nucleic acid molecule;
b) determining the molecular mass of the encoded polypeptide by mass spectrometry; and
c) determining the identity of the polypeptide by comparing the molecular mass of the polypeptide with the molecular mass of a corresponding known polypeptide, thereby obtaining information on a sequence of nucleotides in the target nucleic acid molecule.
7 Assignments
0 Petitions
Accused Products
Abstract
A process for determining the identity of a target polypeptide using mass spectroscopy is provided. Depending on the target polypeptide to be identified, a process as disclosed can be used, for example, to diagnose a genetic disease or chromosomal abnormality, a predisposition to a disease or condition, or infection by a pathogenic organism; or for determining identity or heredity. Kits for performing the disclosed processes also are provided.
275 Citations
95 Claims
-
1. A process for obtaining information on a sequence of a target nucleic acid molecule by determining the identity of a polypeptide encoded by the nucleic acid molecule, comprising the steps of:
-
a) preparing the encoded polypeptide from a target nucleic acid molecule by in vitro translation, or by in vitro transcription followed by translation, of the target nucleic acid molecule;
b) determining the molecular mass of the encoded polypeptide by mass spectrometry; and
c) determining the identity of the polypeptide by comparing the molecular mass of the polypeptide with the molecular mass of a corresponding known polypeptide, thereby obtaining information on a sequence of nucleotides in the target nucleic acid molecule. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84)
-
-
57. A process for obtaining information on sequences of a plurality of nucleic acid molecules by determining the identity of a plurality of target polypeptides encoded by the nucleic acid molecules, comprising the steps of:
-
a) obtaining a plurality of nucleic acid molecules encoding a plurality of target polypeptides;
b) preparing a plurality of differentially mass modified target polypeptides from the plurality of nucleic acid molecules;
c) determining the molecular mass of each differentially mass modified target polypeptide in the plurality by mass spectrometry; and
d) determining the identity of each target polypeptide in the plurality by comparing the molecular mass of each differentially mass modified target polypeptide in the plurality with the molecular mass of a corresponding known polypeptide, thereby obtaining information on nucleotide sequences in the plurality of nucleic acid molecules encoding the target polypeptides;
wherein each encoded polypeptide is immobilized to the solid support through a cleavable linker.- View Dependent Claims (58, 59, 85, 86, 87, 92, 93, 94, 95)
-
-
60. A process for identifying a target nucleic acid molecule by determining the identity of a polypeptide encoded by the nucleic acid molecule, comprising the steps of:
-
a) preparing the encoded polypeptide by in vitro translation, or by in vitro transcription followed by translation, of a target nucleic acid molecule encoding the polypeptide;
b) contacting the encoded polypeptide with at least one agent that cleaves at least one peptide bond in the encoded polypeptide to produce peptide fragments of the encoded polypeptide;
c) determining the molecular mass of at least one of the peptide fragments of the encoded polypeptide by mass spectrometry; and
d) comparing the molecular mass of the peptide fragments of the encoded polypeptide with the molecular mass of peptide fragments of a corresponding known polypeptide, thereby determining the identity of the encoded polypeptide and the target nucleic acid molecule. - View Dependent Claims (61, 62, 63, 64, 65, 88, 89, 91)
-
-
66. A process for obtaining information on sequences of a plurality of nucleic acid molecules by determining the identity of a plurality of encoded polypeptides encoded by the nucleic acid molecules, comprising the steps of:
-
a) obtaining a plurality of nucleic acid molecules encoding a plurality of encoded polypeptides;
b) preparing a plurality of encoded polypeptides from the plurality of nucleic acid molecules;
c) contacting each encoded polypeptide with at least one agent that cleaves at least one peptide bond in each encoded polypeptide to produce peptide fragments of each encoded polypeptide;
d) determining the molecular mass of at least one of the peptide fragments of each encoded polypeptide in the plurality by mass spectrometry; and
e) determining the identity of each encoded polypeptide in the plurality by comparing the molecular mass of the peptide fragments of each encoded polypeptide with the molecular mass of peptide fragments of a corresponding known polypeptide, thereby obtaining information on nucleotide sequences in the plurality of nucleic acid molecules encoding the encoded polypeptides. - View Dependent Claims (67, 68, 69, 70, 71, 72, 73, 90)
-
Specification