title: The thrombospondin-4 gene.
abstract: Thrombospondins are a family of extracellular, adhesive proteins that are widely expressed in vertebrates. Five distinct gene products, designated thrombospondin-1 through -4 and cartilage oligomeric matrix protein (COMP), have been identified. With the exception of thrombospondin-4, the structure and location of thrombospondin genes have been determined in the human and/or mouse genomes. In this study, the structure and location of the murine thrombospondin-4 gene and the location of the human thrombospondin-4 gene are reported. The murine thrombospondin-4 gene is approximately 4.5 kb in length and includes 22 exons. Interspecific backcross analysis of progeny derived from matings of (C57BL/6J x Mus spretus)F(1) x C57BL/6J mice indicates that the thrombospondin-4 gene is tightly linked to the Dhfr locus on murine Chromosome (Chr) 13. The human gene maps to Chr 5 in band q13 by in situ hybridization to human metaphase chromosomes. The thrombospondin-4 promoter is similar to promoters of some housekeeping, growth control, and other thrombospondin genes in that it contains multiple GC box sequences and lacks a CAAT box. The presence of multiple E-box sequence motifs is consistent with thrombospondin-4 expression in muscle and bone tissue.
authors.affiliation: Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Research North (RN-270C), 99 Brookline Avenue, Boston, Massachusetts 02215, USA.
authors.forename: G
authors.initials: G
authors.lastname: Newton
authors.forename: S
authors.initials: S
authors.lastname: Weremowicz
authors.forename: C C
authors.initials: CC
authors.lastname: Morton
authors.forename: N A
authors.initials: NA
authors.lastname: Jenkins
authors.forename: D J
authors.initials: DJ
authors.lastname: Gilbert
authors.forename: N G
authors.initials: NG
authors.lastname: Copeland
authors.forename: J
authors.initials: J
authors.lastname: Lawler
mesh_terms: D000818:Animals; D001483:Base Sequence; D002874:Chromosome Mapping; D002895:Chromosomes, Human, Pair 5; D003001:Cloning, Molecular; D003433:Crosses, Genetic; D005091:Exons; D015870:Gene Expression; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D007438:Introns; D051379:Mice; D008810:Mice, Inbred C57BL; D008969:Molecular Sequence Data; D010802:Phylogeny; D011401:Promoter Regions, Genetic; D017422:Sequence Analysis, DNA; D019699:Thrombospondins / Q000235:genetics*
chemical_list: D019699:Thrombospondins; C101864:thrombospondin 4