title: Genomic organization and chromosomal localization of the gene encoding human P-selectin glycoprotein ligand.
abstract: The gene for P-selectin glycoprotein ligand (PSGL-1) has been cloned from a human placenta genomic DNA library. A single intron of approximately 9 kilobases was found in the 5'-untranslated region and the complete coding region resides in exon 2. The genomic clone differs from the cDNA clone isolated from HL-60 cells in that it encodes an extra copy of the decameric repeat located in the extracellular domain of PSGL-1. Further analysis indicated that the PSGL-1 genes of HL-60 and U-937 cells contain 15 repeats, whereas the PSGL-1 genes of polymorphonuclear leukocytes, monocytes, and several other cell lines contain 16 repeats. Transfection experiments did not indicate a functional difference between these two variants of PSGL-1. The two previously observed PSGL-1 mRNA species of 2.5 and 4 kilobases most likely arise from differential utilization of polyadenylation signal sequences. The organization of the PSGL-1 gene closely resembles those of CD43 and human platelet glycoprotein GPIb alpha, both of which have an intron in the 5'-noncoding region, a long second exon containing the complete coding region, and TATA-less promoters. The gene for human PSGL-1, which has been designated SELPLG by the Human Gene Nomenclature Committee, was mapped to chromosome 12q24 using Southern blot analysis of DNA from a set of human-mouse cell hybrids, and fluorescent in situ hybridization on metaphase chromosome spreads.
authors.affiliation: Small Molecule Drug Discovery Group, Genetics Institute, Cambridge, Massachusetts 02140, USA.
authors.forename: G M
authors.initials: GM
authors.lastname: Veldman
authors.forename: K M
authors.initials: KM
authors.lastname: Bean
authors.forename: D A
authors.initials: DA
authors.lastname: Cumming
authors.forename: R L
authors.initials: RL
authors.lastname: Eddy
authors.forename: S N
authors.initials: SN
authors.lastname: Sait
authors.forename: T B
authors.initials: TB
authors.lastname: Shows
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D015152:Blotting, Northern; D002874:Chromosome Mapping; D002881:Chromosomes, Human, Pair 12 / Q000235:genetics*; D018076:DNA, Complementary / Q000235:genetics; D005091:Exons / Q000235:genetics; D005260:Female; D014644:Genetic Variation; D015894:Genome, Human; D015698:Genomic Library; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D007438:Introns / Q000235:genetics; D007962:Leukocytes; D008562:Membrane Glycoproteins / Q000096:biosynthesis / Q000235:genetics*; D008969:Molecular Sequence Data; D019007:P-Selectin; D010920:Placenta; D010980:Platelet Membrane Glycoproteins / Q000378:metabolism; D016133:Polymerase Chain Reaction; D011247:Pregnancy; D012333:RNA, Messenger / Q000235:genetics; D012091:Repetitive Sequences, Nucleic Acid / Q000235:genetics; D014158:Transcription, Genetic
chemical_list: D018076:DNA, Complementary; D008562:Membrane Glycoproteins; D019007:P-Selectin; C084882:P-selectin ligand protein; D010980:Platelet Membrane Glycoproteins; D012333:RNA, Messenger