title: Comparative proteomic analysis of midgut proteins from male and female Bombyx mori (Lepidoptera: Bombycidae).
abstract: Many biological phenotypes of male and female silkworms (Bombyx mori) are quite different, and one of the major differences is the growth rate at various larval stages. Nutrient utilization by midgut varies with sexes. However, the molecular basis of this variation is not clear. To understand the molecular mechanism, comparative proteomic approach was employed to investigate the variation of midgut proteomes between male and female silkworms. Totally, 32 proteins that were grouped into four categories were differentially expressed and subsequently identified by mass spectrometry. Gene ontology analysis revealed that these proteins were attributed with biological functions such as binding, catalytic, and transporter, and these proteins were involved in biological process such as cellular process, localization, and metabolic process. Kyoto Encyclopedia of Genes and Genomes pathway analysis revealed that these proteins were involved in pathways such as glycolysis, gluconeogenesis, oxidative phosphorylation, and purine metabolism. At transcription level, the expressional variation was confirmed for six identified proteins including muscle glycogen phosphorylase, uridine 5'-monophosphate synthase, cone cGMP-specific 3',5'-cyclic phosphodiesterase subunit alpha, ATP synthase, thiol peroxiredoxin, and serpin-2. This study provides useful information for understanding the mechanisms of nutrient absorption and the protein-protein interaction in the silkworm.
authors.affiliation: Institute of Life Sciences, Jiangsu University, 301 Xuefu Rd., Zhenjiang 212013, Jiangsu Province, People's Republic of China.
authors.forename: Lvgao
authors.initials: L
authors.lastname: Qin
authors.affiliation: Institute of Life Sciences, Jiangsu University, 301 Xuefu Rd., Zhenjiang 212013, Jiangsu Province, People's Republic of China.
authors.forename: Haifeng
authors.initials: H
authors.lastname: Shi
authors.affiliation: Institute of Life Sciences, Jiangsu University, 301 Xuefu Rd., Zhenjiang 212013, Jiangsu Province, People's Republic of China.
authors.forename: Hengchuan
authors.initials: H
authors.lastname: Xia
authors.affiliation: Institute of Life Sciences, Jiangsu University, 301 Xuefu Rd., Zhenjiang 212013, Jiangsu Province, People's Republic of China.
authors.forename: Liang
authors.initials: L
authors.lastname: Chen
authors.affiliation: Institute of Life Sciences, Jiangsu University, 301 Xuefu Rd., Zhenjiang 212013, Jiangsu Province, People's Republic of China.
authors.forename: Qin
authors.initials: Q
authors.lastname: Yao
authors.affiliation: Institute of Life Sciences, Jiangsu University, 301 Xuefu Rd., Zhenjiang 212013, Jiangsu Province, People's Republic of China kpchen@ujs.edu.cn.
authors.forename: Keping
authors.initials: K
authors.lastname: Chen
mesh_terms: D000818:Animals; D012831:Bombyx / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D004064:Digestive System / Q000378:metabolism*; D005260:Female; D019476:Insect Proteins / Q000096:biosynthesis*; D007814:Larva / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D008297:Male; D020543:Proteome / Q000378:metabolism*; D040901:Proteomics / Q000379:methods*; D012737:Sex Factors
chemical_list: D019476:Insect Proteins; D020543:Proteome
keywords: female; male; mass spectrometry; proteomics; silkworm