广东海洋大学学报
廣東海洋大學學報
엄동해양대학학보
JOURNAL OF GUANGDONG OCEAN UNIVERSITY
2015年
4期
1-9
,共9页
方玲玲%陈刚%王忠良%汤保贵%张健东%黄建盛%周晖
方玲玲%陳剛%王忠良%湯保貴%張健東%黃建盛%週暉
방령령%진강%왕충량%탕보귀%장건동%황건성%주휘
卵形鲳鲹%过氧化物酶体增殖物激活受体 α(PPAR α)%基因%克隆%cDNA 末端快速扩增(RACE)%生物信息学%组织表达
卵形鯧鲹%過氧化物酶體增殖物激活受體 α(PPAR α)%基因%剋隆%cDNA 末耑快速擴增(RACE)%生物信息學%組織錶達
란형창소%과양화물매체증식물격활수체 α(PPAR α)%기인%극륭%cDNA 말단쾌속확증(RACE)%생물신식학%조직표체
Trachinotus ovatus%peroxisome proliferator activated receptors-α (PPAR α)%gene%clone%Rapid Amplification of cDNA Ends (RACE)%bioinformatics%tissue expression
采用 RACE-PCR 克隆卵形鲳鲹(Trachinotus ovatus)过氧化物酶体增殖物激活受体(peroxisome proliferator activated receptors-α,PPAR α)基因的 cDNA 序列全长,并应用生物信息学方法分析其编码蛋白质的理化性质和结构特征。结果表明:卵形鲳鲹 PPAR α基因(GenBank 登录号 KP893147)cDNA 全长1930 bp,开放阅读框(ORF)为1425 bp,共编码474个氨基酸,其编码的蛋白质为不稳定蛋白,无信号肽和跨膜结构,二级结构由α螺旋、β转角、伸展片段和无规则卷曲组成,且α螺旋占较大比例;预测显示,该蛋白有 PPARs 基因家族典型的 DNA 结合区(DBD)和配体结合区(LBD);序列对比表明,卵形鲳鲹 PPAR α基因与尼罗罗非鱼(Oreochromis niloticus)、花鲈(Lateolabrax japonicas)、大黄鱼(Larimichthys crocea)、金头鲷(Sparus aurata)、军曹鱼(Rachycentron canadum)等有较高的同源性(81%~89%);蛋白系统进化树分析显示,在人(Homo sapiens)、鼠(Mus musculus)、鸭(Gallus gallus)、花鲈、大黄鱼、军曹鱼等动物中,卵形鲳鲹的 PPAR α蛋白与军曹鱼的进化关系最为密切(94%),与人(68%)、鼠(68%)、鸭(67%)等的同源性较低。荧光定量分析显示,卵形鲳鲹 PPAR α mRNA 在脑、肾脏、肠、脾脏等组织表达水平较高,其次是皮肤、肌肉,在心脏、肝脏中表达量较低。
採用 RACE-PCR 剋隆卵形鯧鲹(Trachinotus ovatus)過氧化物酶體增殖物激活受體(peroxisome proliferator activated receptors-α,PPAR α)基因的 cDNA 序列全長,併應用生物信息學方法分析其編碼蛋白質的理化性質和結構特徵。結果錶明:卵形鯧鲹 PPAR α基因(GenBank 登錄號 KP893147)cDNA 全長1930 bp,開放閱讀框(ORF)為1425 bp,共編碼474箇氨基痠,其編碼的蛋白質為不穩定蛋白,無信號肽和跨膜結構,二級結構由α螺鏇、β轉角、伸展片段和無規則捲麯組成,且α螺鏇佔較大比例;預測顯示,該蛋白有 PPARs 基因傢族典型的 DNA 結閤區(DBD)和配體結閤區(LBD);序列對比錶明,卵形鯧鲹 PPAR α基因與尼囉囉非魚(Oreochromis niloticus)、花鱸(Lateolabrax japonicas)、大黃魚(Larimichthys crocea)、金頭鯛(Sparus aurata)、軍曹魚(Rachycentron canadum)等有較高的同源性(81%~89%);蛋白繫統進化樹分析顯示,在人(Homo sapiens)、鼠(Mus musculus)、鴨(Gallus gallus)、花鱸、大黃魚、軍曹魚等動物中,卵形鯧鲹的 PPAR α蛋白與軍曹魚的進化關繫最為密切(94%),與人(68%)、鼠(68%)、鴨(67%)等的同源性較低。熒光定量分析顯示,卵形鯧鲹 PPAR α mRNA 在腦、腎髒、腸、脾髒等組織錶達水平較高,其次是皮膚、肌肉,在心髒、肝髒中錶達量較低。
채용 RACE-PCR 극륭란형창소(Trachinotus ovatus)과양화물매체증식물격활수체(peroxisome proliferator activated receptors-α,PPAR α)기인적 cDNA 서렬전장,병응용생물신식학방법분석기편마단백질적이화성질화결구특정。결과표명:란형창소 PPAR α기인(GenBank 등록호 KP893147)cDNA 전장1930 bp,개방열독광(ORF)위1425 bp,공편마474개안기산,기편마적단백질위불은정단백,무신호태화과막결구,이급결구유α라선、β전각、신전편단화무규칙권곡조성,차α라선점교대비례;예측현시,해단백유 PPARs 기인가족전형적 DNA 결합구(DBD)화배체결합구(LBD);서렬대비표명,란형창소 PPAR α기인여니라라비어(Oreochromis niloticus)、화로(Lateolabrax japonicas)、대황어(Larimichthys crocea)、금두조(Sparus aurata)、군조어(Rachycentron canadum)등유교고적동원성(81%~89%);단백계통진화수분석현시,재인(Homo sapiens)、서(Mus musculus)、압(Gallus gallus)、화로、대황어、군조어등동물중,란형창소적 PPAR α단백여군조어적진화관계최위밀절(94%),여인(68%)、서(68%)、압(67%)등적동원성교저。형광정량분석현시,란형창소 PPAR α mRNA 재뇌、신장、장、비장등조직표체수평교고,기차시피부、기육,재심장、간장중표체량교저。
The full-length cDNA of PPAR α in Trachinotus ovatus was cloned by RACE (Rapid Amplification of cDNA Ends), and the protein structures, physical, chemical properties and their functional domain structures which encoded by PPAR α gene were analyzed by bioinformatics method. The results showed that cDNA sequences of PPAR α in T. ovatus were 1 930 bp, and the open reading frame was 1 425 bp, encoding 474 amino acids (GenBank accession No. KP893147). The protein was unstable protein without signal peptide and trans-membrane. The secondary structure of PPAR αcontains alpha helixes, beta turns, and extended strands, random coils. At the same time, alpha helixes were 45.15%. There were some typical structures in PPAR α, including a DNA-binding domain with zinc-finger structures, and a ligand binding domain which can integrate ligands and activate PPAR α. That the sequences of T. ovatus PPAR α were highly homologous with those cloned from Japanese sea perch, cobia, large yellow croaker and gilthead sea-bream (81% - 89%), phylogenetic tree analysis of PPAR α protein showed that the nearest relationship existed between T. ovatus and cobia among all the species mentioned above, and the lowest homology was human. Using quantitative real-time RT-PCR, we observed that PPAR α mRNA was expressed predominantly in brain-lipid, spleen, intestine and head-kidney tissues of T. ovatus.