| Φ |
the Greek capital letter phi, used as the symbol for magnetic flux.
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| α |
alpha, the first letter of the Greek alphabet; symbol for Bunsen coefficient, the heavy chain of IgA (see immunoglobulin), the α chain of hemoglobin, and the probability of Type I error..
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| α- |
a prefix designating (1) the carbon atom adjacent to the principal functional group, e.g., α-amino acids, succeeding letters, β, γ, δ, etc., being used to designate succeeding carbon atoms in the chain; (2) the specific rotation of an optically active substance, e.g., α-D-glucose; (3) the orientation of an exocyclic atom or group, e.g., 3α-hydroxy-5α-androstan-17-one (androsterone); (4) a plasma protein migrating with the α band (subdivided into α1 and α2 bands) in protein electrophoresis, e.g., α-fetoprotein; (5) one in a series of related chemical compounds, particularly a series of stereoisomeric, isomeric, polymeric or allotropic forms, e.g., α-carotene; and (6) one in a group of related entities, e.g., α-ray. For compounds prefixed with the symbol α-, see the unprefixed form.
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| α-N |
[EC 3.2.1.49] a lysosomal hexosaminidase specifically catalyzing the cleavage of terminal, α-linked, nonreducing N-acetylgalactosamine residues from glycoconjugates. Deficiency of the enzyme, an autosomal recessive trait, is a cause of infantile neuroaxonal dystrophy. Called also α-galactosidase B.
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| α-actinin |
a protein found in muscle, fibroblasts, and epithelial cells; it is believed to play a role in binding actin molecules together. See also vinculin.
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