Abstract:
Apparatus and means by which a polysaccharide or other heterogeneous polymer is concatenated with a nucleic acid polymer that is captured by a primer on a polymerase tethered to a bead trapped by a nanopore. The translocation of the nanopore by the polysaccharide or other heterogeneous polymer is then controlled by the speed at which the polymerase releases newly synthesized nucleic acid or slows the motion of the nucleic acid as it is pulled on by an electrophoretic field.
Abstract:
Embodiments of the present disclosure relate to amino acid, modified amino acid, peptide and protein identification and sequencing, by means of, for example, electronic detection of individual amino acids or small peptides.
Abstract:
The present invention is directed to systems, devices and methods for identifying biopolymers, such as strands of DNA, as they pass through a constriction such as a carbon nanotube nanopore. More particularly, the invention is directed to such systems, devices and methods in which a newly translocated portion of the iopolymer forms a temporary electrical circuit between the nanotube nanopore and a second electrode, which may also be a nanotube. Further, the invention is directed to such systems, devices and methods in which the constriction is provided with a transnaionilized unit which, together with a newly translocated portion of the biopolymer, forms a temporary electrical circuit that can be used to characterize the portion of the biopolymer.
Abstract:
The present disclosure provides an apparatus for synthesizing a biopolymer, a method for preparing an apparatus for synthesizing a biopolymer, and a method of synthesizing a biopolymer.
Abstract:
A single molecule sensing or detecting device includes a first electrode and a second electrode separated from the first electrode by a gap. The first electrode and the second electrode have an opening formed therethrough. At least one of the first electrode and the second electrode is functionalized with a recognition molecule. The recognition molecule has an effective length L1 and is configured to selectively bind to a target molecule having an effective length L2. The size of the gap is configured to be greater than L2, but less than or equal to the sum of L1 and L2.
Abstract:
Embodiments of the present disclosure provide bisbiotin ligands and related conjugates and methods. The bisbiotin ligands, combined with streptavidin, can be used in the separation, labelling, targeting, and immobilization of biomolecules.
Abstract:
A sensing device is provided that includes a tunnel junction created by forming a hole in a layered tunnel junction (for example). A chemically, well-defined surface may be formed by coupling affinity reagents to the electrodes, which, by these means, the surface may be configured to be selective for a particular analyte.
Abstract:
The invention includes compositions, devices, and methods for analyzing a polymer and/or polymer unit. The polymer may be a homo or hetero-polymer such as DNA, RNA, a polysaccharide, or a peptide. The device includes electrodes that form a tunnel gap through which the polymer can pass. The electrodes are functionalized with a reagent attached thereto, and the reagent is capable of forming a transient bond to a polymer unit. When the transient bond forms between the reagent and the unit, a detectable signal is generated and used to analyze the polymer.