N-terminal EF-hand calcium-binding protein 3 is a
protein
Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residues. Proteins perform a vast array of functions within organisms, including catalysing metabolic reactions, DNA replication, respo ...
that in humans is encoded by the ''NECAB3''
gene
In biology, the word gene (from , ; "...Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity..." meaning ''generation'' or ''birth'' or ''gender'') can have several different meanings. The Mendelian gene is a ba ...
.
The protein encoded by this gene interacts with the amino-terminal domain of the amyloid beta A4 precursor protein-binding family A member 2 (
APBA2
Amyloid beta A4 precursor protein-binding family A member 2 is a protein that in humans is encoded by the ''APBA2'' gene.
Structure
This protein has phosphotyrosine-binding domain (PTB domain or PID) in the middle and two PDZ domains at C-termi ...
), inhibits the association of APBA2 with amyloid precursor protein through a non-competitive mechanism, and abolishes the suppression of beta-amyloid production by APBA2. This protein, together with APBA2, may play an important role in the regulatory system of
amyloid precursor protein
Amyloid-beta precursor protein (APP) is an integral membrane protein expressed in many biological tissue, tissues and concentrated in the synapses of neurons. It functions as a cell surface receptor and has been implicated as a regulator ...
metabolism and
beta-amyloid
Amyloid beta (Aβ or Abeta) denotes peptides of 36–43 amino acids that are the main component of the amyloid plaques found in the brains of people with Alzheimer's disease. The peptides derive from the amyloid precursor protein (APP), which i ...
generation. This gene consists of at least 13 exons and its alternative splicing generates at least 2 transcript variants.
See also
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N-terminal
The N-terminus (also known as the amino-terminus, NH2-terminus, N-terminal end or amine-terminus) is the start of a protein or polypeptide, referring to the free amine group (-NH2) located at the end of a polypeptide. Within a peptide, the ami ...
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EF-hand
The EF hand is a helix–loop–helix structural domain or ''motif'' found in a large family of calcium-binding proteins.
The EF-hand motif contains a helix–loop–helix topology, much like the spread thumb and forefinger of the human hand, in ...
References
External links
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Further reading
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