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描述:
Mouse Chemerin, also known as Tazaroteneinduced Gene-2 (TIG2), is a new, but distant
member of the cystatin superfamily. Members of this superfamily contain at least two
intrachain disulfide bonds and an αhelical structure over a distance of about 100 amino
acids (aa). Chemerin is synthesized as a 162 aa precursor that contains a hydrophobic
Nterminal sequence, an intervening 140 aa cystatin-fold containing domain, and a six aa
C-terminal prosegment. Within the cystatinfold domain there are three intrachain disulfide
bonds that contribute to the characteristic fold.The precursor molecule is described as
undergoing proteolytic processing at both termini by unknown proteases. The N-terminal 16
residue hydrophobic segment is described as being either a signal sequence or a
transmembrane (TM) segment for a type II TM protein. In either case it gives rise to a soluble
proform that undergoes further processing at the C-terminus. In mouse, the C-terminal six
residues are cleaved, giving rise to a monomeric, 16 kDa heparinbinding bioactive molecule
(aa 17 156). A shorter form has been described in human.
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