摘要:
An auxiliary substance such as a label, support, or bioactive agent is attached to a protein at a site that is remote from the active site of the protein by the use of exopeptidase and a nucleophile which is an amino acid, amino acid derivative, amine or alcohol. In one embodiment, the nucleophile is attached to the carboxy terminus of a protein by catalysis with exopeptidase to form an adduct and then the adduct or its combination with a linker arm is bound to the auxiliary substance. In another embodiment, the auxiliary substance or its combination with a linker arm is bound to the nucleophile to form an intermediate substance which is then coupled by catalysis with exopeptidase to the carboxy terminus of a protein.
摘要:
A method is provided for preparing a labeled protein, immobilized protein or protein-bioactive agent composition by attaching a label, support or bioactive agent to a protein by exopeptidase catalysis at a site that is remote from the active site of the protein. More specifically, an amine or alcohol group of an amino acid, amine or alcohol nucleophile is reacted by exopeptidase catalysis with a C-terminus carboxylic acid group of a protein such as an antibody, enzyme or hormone to couple the nucleophile to the protein to form an adduct, and the adduct is bound to an auxiliary substance such as a support, label or bioactive agent or its combination with a linker arm by reacting a reactive substituent of the nucleophile with a reactive group of the auxiliary substance. Alternatively, the nucleophile is bound to the auxiliary substance or its combination with a linker arm to form an intermediate, and the intermediate is coupled by exopeptidase catalysis to the protein. The exopeptidase may be a serine or cysteine exocarboxypeptidase.
摘要:
The invention provides a means for attaching a label, support or bioactive agent to a protein with an exopeptidase at a site that is remote from the active site of the protein. More specifically the invention is directed to a method for the attachment of an amino acid, amine and alcohol nucleophile to the carboxyl terminus of a protein. In one embodiment, a labeled nucleophile is attached to a protein such as an antibody. In other embodiments, the invention is directed to a method for the attachment of a protein to an immobilization support and to a method for the attachment of a bioactive agent to a protein.
摘要:
The invention is directed to a method for purifying sequentially synthesized peptides and oligonucleotides by immunoaffinity techniques. Selected products are lapped with an antigenic capping agent and are conjugated with antibodies that are specific for the capping agent.
摘要:
The invention is directed to a method of purifying sequentially synthesized peptides and oligonucleotides by affinity techniques. Selected products are capped with and N-terminus capping agent for peptides or a 5'-terminus capping agents for oligonucleotides, and then bound with affinity agents that are selective for the corresponding capping agents.
摘要:
The invention is directed to a method of purifying sequentially synthesized peptides and oligonucleotides by affinity techniques. Selected products are capped with and N-terminus capping agent for peptides or a 5'-terminus capping agents for oligonucleotides, and then bound with affinity agents that are selective for the corresponding capping agents.
摘要:
A conveyor belt device wherein a detectable coating, such as in the form of a thin film, overlies selected portions of a conveyor belt substrate surface. Suitable detectable coatings include materials that are inductive, conductive, magnetic, reflective, fluorescent and color-indicating or a combination thereof. Also disclosed are associated or corresponding conveyor belt assemblies and methods of making.
摘要:
A coupler guard configured to protect an aux coupler assembly from side impacts in the rough use environment of a loader. The coupler guard comprises an encasement and a side plate. The loader comprises the aux coupler assembly and a hinge extension. The encasement wraps around a top portion and interior side of the aux coupler assembly. The side plate attaches to a portion of the encasement and protect an exterior side portion of the aux coupler assembly. A screw assemblies selectively attaches the encasement to the side plate. A ring attaches to a portion of the side plate. The ring selectively wraps around a portion of the hinge extension of the loader. A ring screw assembly selectively holds the ring and the rest of the coupler guard to the hinge extension. An edge trim selectively sits on top of a portion of a first arm.