A compound whose molecules are composed of two identical monomers. It is a chemical compound that consists of two monomers, or subunits, which are structurally similar.
Definition of DIMER. : a compound formed by the union of two radicals or two molecules of a simpler compound; specifically: a polymer formed from two molecules of a monomer. — di·mer·ic \(ˌ)dī-ˈmer-ik\ adjective. — di·mer·iza·tion \ˌdī-mə-rə-ˈzā-shən\ noun. — di·mer·ize \ˈdī-mə-ˌrīz\ transitive verb. ADVERTISEMENT. Dimer may refer to: 1  Dimer (chemistry) , a chemical structure formed from two similar sub-units. 2  Protein dimer, a protein quaternary structure. 3  Dimer model, an item in statistical mechanics.  A dimer is a chemical compound that consists of two monomers, or subunits, which are structurally similar. Two similar molecules bonded together form a dimer, while many similar molecules bonded together would form a polymer.  Dimer. Definition. noun, plural: dimers. A chemical compound composed of two identical or similar (not necessarily identical) subunits or monomers. verb. To come together (of two similar subunits) to form a chemical compound.  In biochemistry, a dimer is a macromolecular complex formed by two, usually non-covalently bound, macromolecules such as proteins or nucleic acids. It is a quaternary structure of a protein. An example of a non-covalent heterodimer is the enzyme reverse transcriptase, which is composed of two different amino acid chains. An exception is dimers that are linked by disulfide bridges such as the homodimeric protein NEMO. Some proteins contain specialized domains to ensure dimerization (dimerization domains). D-Dimer Test. Guide. A d-dimer test is a blood test that measures a substance that is released when a blood clot breaks up. Doctors order the d-dimer test, along with other lab tests and imaging scans, to help check for blood-clotting problems. A d-dimer test can also be used to check how well a treatment is working. Why It Is Done. Doctors use the d-dimer test when a person might have a dangerous blood-clotting problem. These problems include: 1  Deep vein thrombosis, a condition in which a blood clot (thrombus) forms in the deep veins of the legs, pelvis, or arms. 2  To learn more, see the topic Deep Vein Thrombosis. Noun. 1. dimer-a compound whose molecules are composed of two identical monomers. chemical compound, compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight.  The d-dimer test measures the amount of a substance that is released when a blood clot breaks up. The normal values listed here (called a reference range) are just a guide. These ranges vary from lab to lab, and your lab may have a different range for what's normal. Why It Is Done. Doctors use the d-dimer test when a person might have a dangerous blood-clotting problem. These problems include: 1  Deep vein thrombosis, a condition in which a blood clot (thrombus) forms in the deep veins of the legs, pelvis, or arms. 2  To learn more, see the topic Deep Vein Thrombosis. Test Overview. A d-dimer test is a blood test that measures a substance that is released when a blood clot breaks up. Doctors order the d-dimer test, along with other lab tests and imaging scans, to help check for blood-clotting problems. A d-dimer test can also be used to check how well a treatment is working. Why It Is Done. Doctors use the d-dimer test when a person might have a dangerous blood-clotting problem. These problems include: 1  Deep vein thrombosis, a condition in which a blood clot (thrombus) forms in the deep veins of the legs, pelvis, or arms. 2  To learn more, see the topic Deep Vein Thrombosis.
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