secondary structure

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Related to secondary structures: tertiary structures

secondary structure

n.
The three-dimensional structure of the polypeptide backbone of a protein (such as alpha helix, beta sheet, and coil patterns), or the sugar-phosphate backbone of a nucleic acid (such as the double helix pattern of DNA).
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References in periodicals archive ?
Secondary structure analysis: Publically available Mfold web server athttp://unafold.rna.albany.edu/?q=mfold was used for the prediction of secondary structures.
The expression of the pseudogenes was evaluated on the basis of free energy values (MFE) of the secondary structures of their mRNAs.
The conformational sensitive amide I band, which is primarily caused by the carbonyl stretching vibrations of the protein backbone and appears in the range between 1700 and 1600 [cm.sup.-1], is frequently used in the assignment of proteins' different secondary structures [28].
The presented analysis, aimed at helping in answering this issue, was performed according to the following steps: (i) creating a set of plant miRNA sequences with experimentally confirmed cleavage mechanisms, (ii) downloading precursor sequences of selected miRNAs and supplementing them to the desired length, (iii) analysing sequences using WebLOGO [45] and MEME Suite [46], (iv) predicting secondary structures of miRNA precursors by RNAstructure [4] and mfold [9], (v) choosing the best secondary structures for further analysis, and (vi) analysing predicted secondary structures in the search for structural patterns.
Specific commercial programs covered include the A350XWB secondary structures, A380, the A320 and A330 family and ATR commercial aircraft.
It has won qualification by The Boeing Company to manufacture secondary structures, such as wing movable flaps and engine nacelles, as well as interior applications.
Specifically, [alpha]-helices and [beta]-sheets in the protein secondary structures can affect digestibility of feed proteins (Dyson and Wright, 1993).
The businesses are leaders in the design, development and production of highly engineered aerospace composite engine components (spinners, internal multi-stage components, exhaust flaps), radomes (C4I and defensive measures radomes, with a growing position in civil radomes) and complex secondary structures (air-to-air refuelling, structural munitions components).
Without Prkci, the stem cells favored self-renewal, generating large numbers of stem cells and, subsequently, an abundance of secondary structures.
Cytec Aerospace Materials supplies composite materials for the commercial and military aerospace markets, manufacturing advance material solutions for unique and demanding aerospace applications including primary and secondary structures, interiors, engines and nacelles.
The bill also authorizes insurance companies to offer various deductible amounts and give homeowners more options for covering contents, living expenses, secondary structures, and more, says the Herald.