title: Assignment of the human pulmonary surfactant protein D gene (SFTP4) to 10q22-q23 close to the surfactant protein A gene cluster.
abstract: Pulmonary surfactant consists of a complex mixture of phospholipids and several proteins essential to normal respiratory function. Two of the surfactant proteins, SP-A and SP-D, appear to have lectin-like activity relevant to the local phagocytic defense. Using polymerase chain reaction (PCR)-based somatic cell hybrid mapping, the human SP-D gene (SFTP4) was assigned to chromosome 10. A regional mapping panel was assembled and characterized using sequence tagged sites for five loci previously mapped to 10q. SFTP4, the SP-A gene (SFTP1), and the microsatellite D10S109 were placed in the interval 10q22-q23. Low-stringency PCR using the SFTP1 primer pair suggested the presence of at least two additional SP-A-related genes in the same region. With the locus for mannose-binding lectin (MBL) at 10q21, this may be indicative of this region's central role in the evolutionary history of carbohydrate-binding proteins containing collagen-like regions.
authors.affiliation: Department of Biochemistry, University of Oxford, United Kingdom.
authors.forename: K
authors.initials: K
authors.lastname: Kölble
authors.forename: J
authors.initials: J
authors.lastname: Lu
authors.forename: S E
authors.initials: SE
authors.lastname: Mole
authors.forename: S
authors.initials: S
authors.lastname: Kaluz
authors.forename: K B
authors.initials: KB
authors.lastname: Reid
mesh_terms: D000818:Animals; D001483:Base Sequence; D005075:Biological Evolution; D002874:Chromosome Mapping; D002879:Chromosomes, Human, Pair 10; D005091:Exons; D008040:Genetic Linkage; D006023:Glycoproteins / Q000235:genetics*; D006801:Humans; D006822:Hybrid Cells; D051379:Mice; D008969:Molecular Sequence Data; D005810:Multigene Family; D009838:Oligodeoxyribonucleotides; D016133:Polymerase Chain Reaction; D011510:Proteolipids / Q000235:genetics*; D037662:Pulmonary Surfactant-Associated Protein A; D037663:Pulmonary Surfactant-Associated Protein D; D037661:Pulmonary Surfactant-Associated Proteins; D011663:Pulmonary Surfactants / Q000235:genetics*
chemical_list: D006023:Glycoproteins; D009838:Oligodeoxyribonucleotides; D011510:Proteolipids; D037662:Pulmonary Surfactant-Associated Protein A; D037663:Pulmonary Surfactant-Associated Protein D; D037661:Pulmonary Surfactant-Associated Proteins; D011663:Pulmonary Surfactants