Cloning and nucleotide sequence of a full-length cDNA for human 14 kDa beta-galactoside-binding lectin.
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Hirabayashi J, Ayaki H, Soma G, Kasai K
Cloning and nucleotide sequence of a full-length cDNA for human 14 kDa beta-galactoside-binding lectin.
Biochim Biophys Acta. 1989 Jun 1;1008(1):85-91.
- PubMed ID
- 2719964 [ View in PubMed]
- Abstract
A full-length cDNA for a 14K-type human lung beta-galactoside-binding lectin was cloned. The cDNA includes a 405 bp open reading frame coding 135 amino acids including the initiator methionine, and having a single internal EcoRI site and a polyadenylation signal. The deduced amino-acid sequence agreed completely with the sequence of a human placenta lectin determined by direct amino-acid sequence analysis (Hirabayashi, J. and Kasai, K. (1988) J. Biochem. 104, 1-4). It showed extensive sequence similarity with other vertebrate 14K-type lectins and a 35K-type lectin (carbohydrate-binding protein 35) of mouse 3T3 cell. Search of a Genbank sequence data base revealed significant sequence similarity between the beta-galactoside-binding lectins and the carboxyl-terminal half of an IgE-binding protein, the cDNA of which has been cloned from rat basophilic leukemia cells. Thus, 14K-type lectin, 35K-type lectin and IgE-binding protein appeared to form a superfamily of proteins. Almost all invariant residues are located in the central region of the 14K-type lectins, so this region may constitute an essential part of the lectins, such as the sugar-binding domain.