title: Identification and expression of the elongator protein 2 (Ajelp2) gene, a novel regeneration-related gene from the sea cucumber Apostichopus japonicus.
abstract: Elongator proteins comprise six subunits (ELP1-ELP6) and form protein complexes. The elongator protein 2 gene (elp2) encodes a protein with a WD40 repeats domain that acts as a scaffold for complex assembly. It also plays an important role in growth and development. In this study, the full-length cDNA of elongator protein 2 (Ajelp2) was cloned from the sea cucumber Apostichopus japonicus (A. japonicus) using rapid amplification of cDNA ends PCR techniques and comprised 3,058 bp, including a 54 bp 5' untranslated (UTR), a 526 bp 3' UTR and a 2,478 bp open reading frame encoding a polypeptide of 825 amino acids. The Ajelp2 sequence showed high homology to 12 other species. The molecular weight and isoelectric of point the presumptive protein were 91.6 kDa and 5.84, respectively. In situ hybridization indicated that the gene is expressed in the body wall, intestine, respiratory tree and longitudinal muscle. The expression level of Ajelp2 increased in recovering of organs in sea cucumber and showed it's the highest expression level at the 15th day in the intestine and respiratory tree. Its expression then gradually decreased to normal levels. In the body wall, the expression level of Ajelp2 was up-regulated and then down-regulated. These results indicated that Ajelp2 is involved in protein regulation during the regeneration process in the sea cucumber A. japonicus.
authors.affiliation: College of Life Sciences, Liaoning Normal University, 1, Liushu South Street, Ganjingzi District, Dalian, 116081, People's Republic of China.
authors.forename: Yanli
authors.initials: Y
authors.lastname: Mei
authors.forename: Feng
authors.initials: F
authors.lastname: Yao
authors.forename: Yang
authors.initials: Y
authors.lastname: Wu
authors.forename: Bing
authors.initials: B
authors.lastname: Chu
authors.forename: Cheng
authors.initials: C
authors.lastname: Cheng
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
authors.forename: Xuejie
authors.initials: X
authors.lastname: Li
authors.forename: Xiangyang
authors.initials: X
authors.lastname: Zou
authors.forename: Lin
authors.initials: L
authors.lastname: Hou
mesh_terms: D000818:Animals; D003001:Cloning, Molecular; D019295:Computational Biology; D017931:DNA Primers / Q000235:genetics; D018076:DNA, Complementary / Q000235:genetics; D020869:Gene Expression Profiling; D005786:Gene Expression Regulation / Q000502:physiology*; D051548:Histone Acetyltransferases / Q000235:genetics*; D017403:In Situ Hybridization; D046912:Multiprotein Complexes / Q000235:genetics*; D016366:Open Reading Frames / Q000235:genetics; D060888:Real-Time Polymerase Chain Reaction; D012038:Regeneration / Q000235:genetics*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D012616:Sea Cucumbers / Q000201:enzymology*
chemical_list: D017931:DNA Primers; D018076:DNA, Complementary; D046912:Multiprotein Complexes; D051548:Histone Acetyltransferases
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