PMID- 9465907 OWN - NLM STAT- MEDLINE DCOM- 19980304 LR - 20180214 IS - 0301-0171 (Print) IS - 0301-0171 (Linking) VI - 78 IP - 3-4 DP - 1997 TI - Molecular cloning of a novel gene similar to myeloid antigen CD33 and its specific expression in placenta. PG - 295-300 AB - We have isolated a novel gene that encodes a protein sharing significant similarity with myeloid antigen CD33. The complete cDNA contains an open reading frame of 1,326 nucleotides encoding 442 amino acids. The deduced amino acid sequence indicates that this molecule belongs to the immunoglobulin (Ig) superfamily and is likely to be a new member of the sialoadhesin sub-family. It is composed of three Ig-like domains; its high degree of similarity to CD33 (70% identity) in the first and second of these domains implies that the placenta-specific gene product is likely to be associated with cell-cell interaction. Northern-blot analysis revealed transcripts of four distinct sizes, 7.5 kb, 5.0 kb, 4.1 kb, and 2.0 kb, specifically in the placenta. Consequently, we termed this gene CD33L (CD33 antigen-like). An alternatively-spliced transcript encoding a 342-amino-acid peptide which lacked the transmembrane region and the cytoplasmic tail was also isolated. We mapped CD33L by fluorescence in situ hybridization (FISH) to human chromosome 19q13.3, where the CD33 gene is also located. FAU - Takei, Y AU - Takei Y AD - Laboratory of Molecular Medicine, University of Tokyo, Japan. FAU - Sasaki, S AU - Sasaki S FAU - Fujiwara, T AU - Fujiwara T FAU - Takahashi, E AU - Takahashi E FAU - Muto, T AU - Muto T FAU - Nakamura, Y AU - Nakamura Y LA - eng SI - GENBANK/D86358 SI - GENBANK/D86359 PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Switzerland TA - Cytogenet Cell Genet JT - Cytogenetics and cell genetics JID - 0367735 RN - 0 (Antigens, CD) RN - 0 (Antigens, Differentiation, Myelomonocytic) RN - 0 (CD33 protein, human) RN - 0 (Cell Adhesion Molecules) RN - 0 (DNA, Complementary) RN - 0 (RNA, Messenger) RN - 0 (Sialic Acid Binding Ig-like Lectin 3) RN - 0 (Sialoglycoproteins) SB - IM MH - Alternative Splicing MH - Antigens, CD/*genetics MH - Antigens, Differentiation, Myelomonocytic/*genetics MH - Base Sequence MH - Blotting, Northern MH - Cell Adhesion Molecules/*genetics MH - *Chromosome Mapping MH - *Chromosomes, Human, Pair 19 MH - Cloning, Molecular MH - DNA, Complementary MH - Gene Expression Regulation, Developmental MH - Humans MH - In Situ Hybridization, Fluorescence MH - Molecular Sequence Data MH - Placenta/*physiology MH - RNA, Messenger/analysis MH - Sequence Homology, Amino Acid MH - Sialic Acid Binding Ig-like Lectin 3 MH - Sialoglycoproteins/genetics EDAT- 1997/01/01 00:00 MHDA- 1998/02/18 00:01 CRDT- 1997/01/01 00:00 PHST- 1997/01/01 00:00 [pubmed] PHST- 1998/02/18 00:01 [medline] PHST- 1997/01/01 00:00 [entrez] AID - 10.1159/000134676 [doi] PST - ppublish SO - Cytogenet Cell Genet. 1997;78(3-4):295-300. doi: 10.1159/000134676.