title: Ribosomal protein L24 is differentially expressed in ovary and testis of the marine shrimp Marsupenaeus japonicus.
abstract: In order to identify genes involved in oogenesis in shrimp, an ovarian cDNA library of Marsupenaeus japonicus was screened using a suppression-subtraction hybridization (SSH)-enriched probe. More than 20 genes were identified as differentially expressed genes between the ovary and the testis. Unexpectedly, one of these genes is a ribosomal protein that is normally considered a housekeeping gene. Northern blot shows that the shrimp ribosomal protein L24 gene (srpl24) is 0.6 kb in length. The expression level of srpl24 in the ovary is much higher than in the testis. Bioinformatics analyses show that srpl24 encodes a protein of 164 aa with a predicted molecular mass of 18.2 kDa, which is a cytoplasmic ribosomal protein. Real time PCR analyses demonstrated that the relative abundance of srpl24 mRNA in the different organs is: ovary >> testis, hepatopancreas, muscle and eye. The highest expression level of srpl24 in the ovary suggests that srpl24 has an important role in oogenesis. It is the first reported rpl24 in crustaceans and is the first reported rpl24 that is differentially expressed between the ovary and the testis in animals.
authors.affiliation: The Key Laboratory of Science and Technology for Aquaculture and Food Safety, Fisheries College, Jimei University, Xiamen, 361021 China.
authors.forename: Ziping
authors.initials: Z
authors.lastname: Zhang
authors.forename: Yilei
authors.initials: Y
authors.lastname: Wang
authors.forename: Yonghua
authors.initials: Y
authors.lastname: Jiang
authors.forename: Peng
authors.initials: P
authors.lastname: Lin
authors.forename: Xiwei
authors.initials: X
authors.lastname: Jia
authors.forename: Zhihua
authors.initials: Z
authors.lastname: Zou
mesh_terms: D000818:Animals; D001483:Base Sequence; D005260:Female; D005786:Gene Expression Regulation / Q000502:physiology*; D008297:Male; D008969:Molecular Sequence Data; D009928:Organ Specificity / Q000502:physiology; D010053:Ovary / Q000378:metabolism*; D033561:Penaeidae / Q000235:genetics / Q000378:metabolism*; D012269:Ribosomal Proteins / Q000096:biosynthesis* / Q000235:genetics; D013737:Testis / Q000378:metabolism*
chemical_list: D012269:Ribosomal Proteins; C036298:ribosomal protein L24