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Titolo:
A novel human odorant-binding protein gene family resulting from genomic duplicons at 9q34: differential expression in the oral and genital spheres
Autore:
Lacazette, E; Gachon, AM; Pitiot, G;
Indirizzi:
INSERM, Lab Biochim Med Prof B Dastugue, U384, Fac Med, F-63000 Clermont Ferrand, France INSERM Clermont Ferrand France F-63000 F-63000 Clermont Ferrand, France
Titolo Testata:
HUMAN MOLECULAR GENETICS
fascicolo: 2, volume: 9, anno: 2000,
pagine: 289 - 301
SICI:
0964-6906(20000122)9:2<289:ANHOPG>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
MESSENGER-RIBONUCLEIC-ACID; PROSTAGLANDIN-D-SYNTHASE; MOLECULAR-CLONING; STRUCTURAL ORGANIZATION; CANDIDATE REGION; TEAR LIPOCALIN; ALPHA-1-ACID GLYCOPROTEIN; BETA-LACTOGLOBULIN; ESCHERICHIA-COLI; SALIVARY-GLANDS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
57
Recensione:
Indirizzi per estratti:
Indirizzo: Gachon, AM INSERM, Lab Biochim Med Prof B Dastugue, U384, Fac Med, 28 Pl Henri Dunant, F-63000 Clermont Ferrand, France INSERM 28 Pl Henri Dunant Clermont Ferrand France F-63000 ance
Citazione:
E. Lacazette et al., "A novel human odorant-binding protein gene family resulting from genomic duplicons at 9q34: differential expression in the oral and genital spheres", HUM MOL GEN, 9(2), 2000, pp. 289-301

Abstract

Lipocalins are carrier proteins for hydrophobic molecules in many biological fluids. In the oral sphere (nasal mucus, saliva, tears), they have an environmental biosensor function and are involved in the detection of odours and pheromones, Herein, we report the first identification of human lipocalins involved in odorant binding. They correspond to a gene family located on human chromosome 9q34 produced by genomic duplications: two new odorant-binding protein genes (hOSP(IIa) and hOBP(IIb)), the previously described tear lipocalin LCN1 gene and two new LCN1 pseudogenes. Although 95% similar in sequence, the two hOBP(II) genes were differentially expressed in secretory structures. hOBP(IIa) was strongly expressed in the nasal structures, salivary and lachrymal glands, and lung, therefore having an oral sphere profile, hOBP(IIb) was more strongly expressed in genital sphere organs such asthe prostate and mammary glands. Both were expressed in the male deferent ducts and placenta. Surprisingly, alternatively spliced mRNAs resulting in proteins with different C-termini were generated from each of the two genes. The single LCN1 gene in humans generated a putative odorant-binding protein in nasal structures. Finally, based on the proposed successive genomic duplication history, we demonstrated the recruitment of exons within intronic DNA generating diversity. This is consistent with a positive selection pressure in vertebrate evolution in the intron-late hypothesis.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 22:41:24