title: Molecular cloning and characterisation of prophenoloxidase (ProPO) cDNA from Fenneropenaeus chinensis and its transcription injected by Vibrio anguillarum.
abstract: The prophenoloxidase(ProPO) gene was cloned from haemocytes of Chinese shrimp Fenneropenaeus chinensis by Rapid Amplification Complementary DNA Ends (RACE) method. The full-length cDNA of prophenoloxidase gene consists of 3040 bp with a 2061 bp Open Reading Frame (ORF), encoding 686 amino acids. Phylogenetic analysis revealed that it belongs to insect-type invertebrate prophenoloxidase gene family. To understand ProPO reaction for pathogeny's challenge in shrimp, the expressions of ProPO in different tissues were studied by real-time PCR after challenged by Vibrio anguillarum. The results showed that the expression level of ProPO gene in haemocytes was highest among three studied tissues including haemocytes, lymphoid organ and hepatopancreas. The time-course change of ProPO mRNA levels in challenge experiment showed that ProPO mRNA transcripts had the biggest change extent in lymphoid organ.
authors.affiliation: Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.
authors.forename: Hongwei
authors.initials: H
authors.lastname: Gao
authors.forename: Fuhua
authors.initials: F
authors.lastname: Li
authors.forename: Bo
authors.initials: B
authors.lastname: Dong
authors.forename: Qingli
authors.initials: Q
authors.lastname: Zhang
authors.forename: Jianhai
authors.initials: J
authors.lastname: Xiang
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D004156:Catechol Oxidase / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism; D003001:Cloning, Molecular; D018076:DNA, Complementary / Q000235:genetics*; D004792:Enzyme Precursors / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism; D020869:Gene Expression Profiling; D015971:Gene Expression Regulation, Enzymologic; D006434:Hemocytes / Q000201:enzymology / Q000382:microbiology; D043143:Hepatopancreas / Q000201:enzymology / Q000382:microbiology; D008221:Lymphoid Tissue / Q000201:enzymology / Q000382:microbiology; D008969:Molecular Sequence Data; D033561:Penaeidae / Q000201:enzymology / Q000235:genetics* / Q000382:microbiology*; D010802:Phylogeny; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D016415:Sequence Alignment; D014158:Transcription, Genetic; D014733:Vibrio / Q000502:physiology*
chemical_list: D018076:DNA, Complementary; D004792:Enzyme Precursors; D012333:RNA, Messenger; C038451:pro-phenoloxidase; D004156:Catechol Oxidase