Cloning, characterization and genomic organization of LCC-1 (scya16), a novel human CC chemokine expressed in liver.
By homology search of expressed sequence tags (EST) in GenBank a novel member of the CC chemokine family was identified. The full-length sequence of this liver-specific CC chemokine (LCC-1) predicted a mature protein of 97 amino acids with 31-48% identity to other CC chemokines. There was a characteristic amino acid C-term extension when aligned with other chemokines. Northern blot analysis from a panel of human tissues revealed that LCC-1 mRNA expression is restricted to adult and fetal liver. Different polyadenylation results in two mRNA species of 1.5 kb and 0.5 kb in size. LCC-1 is constitutively expressed in human HepG2 hepatoma cells and is induced by hypoxic exposure. The promoter region of the LCC-1 gene contains potential HIF-1 binding sites. The EST for LCC-1 has been previously mapped to the CC chemokine cluster on human chromosome 17q11. 2. The organization of the LCC-1 gene (scya16) into three exons interrupted by two introns is identical to that found for other members of the CC chemokine family.[1]References
- Cloning, characterization and genomic organization of LCC-1 (scya16), a novel human CC chemokine expressed in liver. Yang, J.Y., Spanaus, K.S., Widmer, U. Cytokine (2000) [Pubmed]
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