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Gene

Title:		"Molecular cloning, by a novel approach, of a cDNA encoding a putative olfactory protein in the labial palps of the moth Cactoblastis cactorum"
Author(s):		Maleszka R; Stange G;
Address:		"Visual Sciences, Research School of Biological Sciences, The Australian National University, Canberra, ACT. maleszka@rsbs-central.anu.edu.au"
Journal Title:		Gene
Year:		1997
Volume:		202
Issue:		1-Feb
Page Number:		39 - 43
DOI:		10.1016/s0378-1119(97)00448-4
ISSN/ISBN:		0378-1119 (Print) 0378-1119 (Linking)
Abstract:		"We have used the CapFinder technology, without the library construction step, to amplify and clone full-length cDNAs expressed in the labial palps (CO2-sensing organs) of the moth Cactoblastis cactorum. The validity of our approach is exemplified by the sequence analysis of a 597-bp cDNA clone, designated CLP-1, that contains a 390-bp open reading frame (ORF) flanked by motifs characteristic to a full-length cDNA. The ORF in CLP-1 encodes a predicted polypeptide that is 47% identical to a novel protein, OS-D, found exclusively in the olfactory antennal segment of Drosophila melanogaster. Both CLP-1 and OS-D have primary structures that do not bear sequence similarity to any previously characterised proteins including odorant-binding proteins (OBPs) in vertebrates and pheromone-binding proteins (PBPs) in moths. Although they share features common to OBPs and PBPs, such as the presence of signal peptides and cysteine motifs, they clearly belong to a distinct class of olfactory proteins that appear to be unique to insects. The relative abundance of the CLP-1 message in the labial palps of females leads to the suggestion that this protein is involved in the CO2-sensing cascade. Our results suggest that the experimental procedure can be used as an alternative, rapid method to identify genes expressed in a particular organ, or tissue, especially in situations when the amount of available tissue is a limiting factor"
Keywords:		"Amino Acid Sequence Animals Base Sequence Carrier Proteins/chemistry/*genetics Cloning, Molecular DNA, Complementary/chemistry/*isolation & purification *Drosophila Proteins Female Insect Proteins/chemistry/*genetics Male Molecular Sequence Data Moths/*ge;"
Notes:		"MedlineMaleszka, R Stange, G eng Netherlands 1998/01/14 Gene. 1997 Nov 20; 202(1-2):39-43. doi: 10.1016/s0378-1119(97)00448-4"