title: Proteomic analysis of cow, yak, buffalo, goat and camel milk whey proteins: quantitative differential expression patterns.
abstract: To aid in unraveling diverse genetic and biological unknowns, a proteomic approach was used to analyze the whey proteome in cow, yak, buffalo, goat, and camel milk based on the isobaric tag for relative and absolute quantification (iTRAQ) techniques. This analysis is the first to produce proteomic data for the milk from the above-mentioned animal species: 211 proteins have been identified and 113 proteins have been categorized according to molecular function, cellular components, and biological processes based on gene ontology annotation. The results of principal component analysis showed significant differences in proteomic patterns among goat, camel, cow, buffalo, and yak milk. Furthermore, 177 differentially expressed proteins were submitted to advanced hierarchical clustering. The resulting clustering pattern included three major sample clusters: (1) cow, buffalo, and yak milk; (2) goat, cow, buffalo, and yak milk; and (3) camel milk. Certain proteins were chosen as characterization traits for a given species: whey acidic protein and quinone oxidoreductase for camel milk, biglycan for goat milk, uncharacterized protein (Accession Number: F1MK50 ) for yak milk, clusterin for buffalo milk, and primary amine oxidase for cow milk. These results help reveal the quantitative milk whey proteome pattern for analyzed species. This provides information for evaluating adulteration of specific specie milk and may provide potential directions for application of specific milk protein production based on physiological differences among animal species.
authors: State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences , Beijing 100193, China.
authors: Yongxin
authors: Y
authors: Yang
authors: Dengpan
authors: D
authors: Bu
authors: Xiaowei
authors: X
authors: Zhao
authors: Peng
authors: P
authors: Sun
authors: Jiaqi
authors: J
authors: Wang
authors: Lingyun
authors: L
authors: Zhou
mesh_terms: D000818:Animals; D058578:Biglycan / Q000378:metabolism; D002020:Buffaloes; D002162:Camelus; D002417:Cattle; D016000:Cluster Analysis; D051152:Clusterin / Q000378:metabolism; D006041:Goats; D008892:Milk / Q000737:chemistry*; D008894:Milk Proteins / Q000032:analysis* / Q000378:metabolism; D050891:Oxidoreductases Acting on CH-NH2 Group Donors / Q000378:metabolism; D025341:Principal Component Analysis; D040901:Proteomics / Q000379:methods*; D013045:Species Specificity; D000067816:Whey Proteins
chemical_list: D058578:Biglycan; D051152:Clusterin; D008894:Milk Proteins; D000067816:Whey Proteins; D050891:Oxidoreductases Acting on CH-NH2 Group Donors