Method and apparatus for detecting molecules
First Claim
1. A method of detecting a single molecule attached to a surface with one or more light sensitive elements on or comprised within said surface wherein said surface is present in a photodetector without microlens and without filter layers, the method comprising:
- illuminating said one or more light sensitive elements with a light source,detecting a bead label attached to said single moleculesaid bead label (i) has a diameter which is at least 30% of the width, breadth or diameter of said one or more light sensitive elements or (ii) is at least 1 μ
m in diameter,said bead label and said surface are different entities,said bead label is detected by a reduction in the amount of light received by said one or more light sensitive elements caused by the presence of said bead label which blocks light from reaching the one or more light sensitive elements, andsaid single molecule is detected when the bead label is detected.
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Abstract
The present disclosure is directed to a method of detecting a molecule attached to a surface comprising detecting a bead attached to the molecule. The method may be used for the detection of single molecules and the surface shape may be adapted to receive beads. The disclosure further describes an apparatus for detecting the presence of a molecule having a bead attached thereto comprising a surface adapted to detect a bead wherein the shape of the surface is configured to receive and retain a bead. Kits comprising the apparatus are provided and a use of the apparatus for detecting a bead or a molecule attached thereto is also described.
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Citations
10 Claims
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1. A method of detecting a single molecule attached to a surface with one or more light sensitive elements on or comprised within said surface wherein said surface is present in a photodetector without microlens and without filter layers, the method comprising:
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illuminating said one or more light sensitive elements with a light source, detecting a bead label attached to said single molecule said bead label (i) has a diameter which is at least 30% of the width, breadth or diameter of said one or more light sensitive elements or (ii) is at least 1 μ
m in diameter,said bead label and said surface are different entities, said bead label is detected by a reduction in the amount of light received by said one or more light sensitive elements caused by the presence of said bead label which blocks light from reaching the one or more light sensitive elements, and said single molecule is detected when the bead label is detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification