Search results
Results from the WOW.Com Content Network
An individual motif usually consists of only a few elements, e.g., the 'helix-turn-helix' motif which has just three. Note that, while the spatial sequence of elements may be identical in all instances of a motif, they may be encoded in any order within the underlying gene. In addition to secondary structural elements, protein structural motifs ...
A rhythmic motif is the term designating a characteristic rhythmic formula, an abstraction drawn from the rhythmic values of a melody. A motif thematically associated with a person, place, or idea is called a leitmotif or idée fixe. [7] Occasionally such a motif is a musical cryptogram of the name involved.
A motif may be repeated in a pattern or design, often many times, or may just occur once in a work. [1] A motif may be an element in the iconography of a particular subject or type of subject that is seen in other works, or may form the main subject, as the Master of Animals motif in ancient art typically does.
Sequence motif, a sequence pattern of nucleotides in a DNA sequence or amino acids in a protein; Short linear motif, a stretch of protein sequence that mediates protein–protein interaction; Structural motif, a pattern in a protein structure formed by the spatial arrangement of amino acids
Secondary and tertiary structure of the coiled-coil motif. The heptad repeat often consists of specific amino acids, seen in the figure. Knobs into packing is also shown. [27] The general problem of deciding on the folded structure of a protein when given the amino acid sequence (the so-called protein folding problem) has only been solved ...
A narrative motif can be created through the use of imagery, structural components, language, and other elements throughout literature. The flute in Arthur Miller 's play Death of a Salesman is a recurrent sound motif that conveys rural and idyllic notions.
In biology, a sequence motif is a nucleotide or amino-acid sequence pattern that is widespread and usually assumed to be related to biological function of the macromolecule. For example, an N -glycosylation site motif can be defined as Asn, followed by anything but Pro, followed by either Ser or Thr, followed by anything but Pro residue .
According to one definition, a turn is a structural motif where the C α atoms of two residues separated by a few (usually 1 to 5) peptide bonds are close (less than 7 Å [0.70 nm]). [1] The proximity of the terminal C α atoms often correlates with formation of an inter main chain hydrogen bond between the corresponding residues. Such hydrogen ...