title: Cloning and characterization of a ribosomal protein L24 from Haemaphysalis longicornis eggs.
abstract: A fragment of ribosomal protein L24 was obtained from the complementary deoxyribonucleic acid (cDNA) library of Haemaphysalis longicornis eggs. The complete sequence of the clone was subsequently obtained using rapid amplification of the cDNA ends (RACE). Ribosomal protein L24 from H. longicornis had a high percentage similarity to this protein from different species. Conserved domains were also identified in RpL24. Real-time polymerase chain reaction (PCR) analysis showed that this gene is expressed in various tissues and different developmental stages of H. longicornis. Furthermore, HLL24 is mostly expressed in ovaries and salivary glands compared with other tissues in partially fed adult female ticks, and the expression level of HLL24 is significantly lower in eggs and larvas than in other developmental stages. RpL24 was also cloned from Haemaphysalis qinghaiensis and Hyalomma anatolicum anatolicum ticks, respectively. Comparison of their amino acid sequences revealed difference only in several amino acids. A vaccine based on the HLL24 recombinant protein could not protect rabbits against H. longicornis.
authors.affiliation: Key Laboratory of Veterinary Parasitology of Gansu Province, State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 1 Xujianping, Yanchangbu, Lanzhou, Gansu Province 730046, People's Republic of China.
authors.forename: Zhancheng
authors.initials: Z
authors.lastname: Tian
authors.forename: Ping
authors.initials: P
authors.lastname: Zhang
authors.forename: Jin
authors.initials: J
authors.lastname: Luo
authors.forename: Hong
authors.initials: H
authors.lastname: Yin
authors.forename: Jianxun
authors.initials: J
authors.lastname: Luo
authors.forename: Junren
authors.initials: J
authors.lastname: Xie
authors.forename: Liyan
authors.initials: L
authors.lastname: Zhang
authors.forename: Guangyuan
authors.initials: G
authors.lastname: Liu
mesh_terms: D000818:Animals; D003001:Cloning, Molecular; D017124:Conserved Sequence; D018076:DNA, Complementary / Q000235:genetics / Q000302:isolation & purification; D004531:Eggs; D020869:Gene Expression Profiling; D026863:Ixodidae / Q000235:genetics*; D007814:Larva / Q000235:genetics; D008969:Molecular Sequence Data; D017434:Protein Structure, Tertiary; D012269:Ribosomal Proteins / Q000235:genetics*; D017422:Sequence Analysis, DNA; D017386:Sequence Homology, Amino Acid
chemical_list: D018076:DNA, Complementary; D012269:Ribosomal Proteins; C036298:ribosomal protein L24