Molecular biology

Molecular biology

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Molecular biology

electron nuclear double resonance (ENDOR)

Biology; Biochemistry

A technique for detection of coupling between electrons and nuclei in order to gain information about the valance electron distribution around a paramagnetic nucleus; observation of an electron spin ...

Yin-Yang hypothesis

Biology; Biochemistry

The now-abandoned theory that bidirectional cellular processes, i.e. those that involve two individual pathways (rather than one that may be 'on' or 'off'), e.g. proliferation/ contact inhibition, ...

non-collagen collagen

Biology; Biochemistry

A protein complex that, like collagen, has (Xaa-Yaa-Gly) n amino acid sequences and non-helical globular regions. The collagen-like sequences assemble together into a triple helix and the globular ...

specificity constant (kcat/Km)

Biology; Biochemistry

The apparent second-order rate constant for enzyme action under conditions where an enzyme's binding site is largely unoccupied by substrate ((S)≪K m ); equivalent to the slope of the (pseudo) ...

protein ruler

Biology; Biochemistry

A high-molecular-mass protein that functions in organization of cytoskeletal structures of uniform length by serving as a template for aggregation of exact numbers of other components of the ...

complementarity-determining region (CDR)

Biology; Biochemistry

A polypeptide sequence of a variable domain of an immunoglobulin that is particularly responsible for its recognition by lymphocytes. These short sequences interrupt and loop out from the framework ...

Y-joint

Biology; Biochemistry

A DNA heteroduplex structure in which one strand is extended by a non-homologous internal sequence. The loop of the longer strand is base-paired with itself in a hairpin structure. In an open Y-joint ...