Cloning and expression pattern of sensory neuron membrane protein genes of Galleria mellonella (Lepidoptera: Pyralidae)
Author of the article:XIE Jiao-Xin1, 2** ZHANG Hui-Man1 SUN Le-Le1 ZHANG Yu1 GUO Yuan3***
Author's Workplace:1. College of Animal Science, Shanxi Agricultural University, Taigu 030801, China; 2. Shanxi Key Laboratory of Animal Genetics Resource Utilization and Breeding, Taigu 030801, China; 3. College of Horticulture, Shanxi Agricultural University, Taiyuan 030031, China
Key Words:Galleria mellonella; sensory neuron membrane protein; cloning; sequence analysis; expression pattern
Abstract:
[Aim] To clone the sensory neuron
membrane protein (SNMP) genes, GmelSNMP1 and GmelSNMP2, in the
antennae of the wax moth, Galleria mellonella, and clarify the
expression profiles of these genes in different adult tissues, and thereby
provide a foundation for further research on their function. [Methods] Based on adult antennal transcriptome
sequencing data and the identification of G. mellonella SNMPs, the cDNA
sequence of GmelSNMP1 and GmelSNMP2, including a complete ORF, was
cloned using PCR. Phylogenetic and sequence analysis were used to determine the
classification and sequence structure of these genes, and fluorescent,
quantitative PCR was used to detect their expression in different adult
tissues. [Results] Full-length
cDNA sequences of GmelSNMP1 and GmelSNMP2 (GenBank accession no.:
PQ824699 and PQ824700) were successfully cloned. The ORF of the GmelSNMP1 gene contains 1 578 nucleotides, encoding 525 amino acids; The ORF of the GmelSNMP2 gene contains 1 566 nucleotides, encoding 521 amino acids. The N-terminus of GmelSNMP1 and GmelSNMP2 proteins are in two transmembrane domains and a large
extracellular circular domain within the cell, sharing similar structural
characteristics with the vertebrate CD36 protein family. GmelSNMP1 was
predominantly expressed in the antennae, and its expression in the antennae of
adult females was significantly higher than in males (P=0.002). GmelSNMP2 was expressed in the antennae of both females and males, as well as in
non-antennal tissues. [Conclusion] These results lay a foundation for further
exploring the function of large wax moth SNMPs in detecting sex pheromones and
other odor molecules.