生物学杂志
生物學雜誌
생물학잡지
JOURNAL OF BIOLOGY
2015年
1期
6-9
,共4页
鲈鱼%ZnT%克隆
鱸魚%ZnT%剋隆
로어%ZnT%극륭
Lateolabrax japonicus%ZnT%cloning
锌转运蛋白( zinc transporters , ZnT)在细胞锌的储藏,释放和分布中起了重要的作用。运用RT-PCR和SMART RACE方法从鲈鱼肝脏克隆得到了鲈鱼ZnT基因全长cDNA序列。结果显示,鲈鱼ZnT全长为1747 bp,包括5′非翻译区84 bp,3′非翻译区490 bp,开放阅读框1173 bp,可编码390个氨基酸。生物信息学分析表明该蛋白有6次跨膜结构,N端和C端均位于细胞膜内侧,第IV和第V跨膜区之间的环富含组氨酸。鲈鱼ZnT的氨基酸序列与其他生物的ZnT7序列有高度的相似性:斑马鱼,85.6%;大西洋鲑,85.4%;红鳍东方鲀,84.3%;人,75.1%;小鼠,73.8%。聚类分析显示鲈鱼ZnT首先与其它鱼类和人ZnT7成一簇,再与鱼的其他类别ZnT聚合,说明分离到的鲈鱼ZnT为ZnT7。
鋅轉運蛋白( zinc transporters , ZnT)在細胞鋅的儲藏,釋放和分佈中起瞭重要的作用。運用RT-PCR和SMART RACE方法從鱸魚肝髒剋隆得到瞭鱸魚ZnT基因全長cDNA序列。結果顯示,鱸魚ZnT全長為1747 bp,包括5′非翻譯區84 bp,3′非翻譯區490 bp,開放閱讀框1173 bp,可編碼390箇氨基痠。生物信息學分析錶明該蛋白有6次跨膜結構,N耑和C耑均位于細胞膜內側,第IV和第V跨膜區之間的環富含組氨痠。鱸魚ZnT的氨基痠序列與其他生物的ZnT7序列有高度的相似性:斑馬魚,85.6%;大西洋鮭,85.4%;紅鰭東方鲀,84.3%;人,75.1%;小鼠,73.8%。聚類分析顯示鱸魚ZnT首先與其它魚類和人ZnT7成一簇,再與魚的其他類彆ZnT聚閤,說明分離到的鱸魚ZnT為ZnT7。
자전운단백( zinc transporters , ZnT)재세포자적저장,석방화분포중기료중요적작용。운용RT-PCR화SMART RACE방법종로어간장극륭득도료로어ZnT기인전장cDNA서렬。결과현시,로어ZnT전장위1747 bp,포괄5′비번역구84 bp,3′비번역구490 bp,개방열독광1173 bp,가편마390개안기산。생물신식학분석표명해단백유6차과막결구,N단화C단균위우세포막내측,제IV화제V과막구지간적배부함조안산。로어ZnT적안기산서렬여기타생물적ZnT7서렬유고도적상사성:반마어,85.6%;대서양해,85.4%;홍기동방돈,84.3%;인,75.1%;소서,73.8%。취류분석현시로어ZnT수선여기타어류화인ZnT7성일족,재여어적기타유별ZnT취합,설명분리도적로어ZnT위ZnT7。
Zinc transporters family plays important roles in cellular zinc storage , release and distribution .This study described the clo-ning and sequence analysis of the zinc transporters (ZnT) in the seabass (Lateolabrax japonicus) using RT-PCR and SMART RACE. The acquired ZnT was 1747 bp in length , including a 84 bp 5′-UTR, a 490 bp 3′-UTR and a 1173 bp coding sequence which could code 390 amino acid .The obtained sequence was postulated to have six transmenbrane domains , an intracellular N-terminus and C-ter-minus and a His-rich loop between transmembrane domains IV and V .The sequence alignment analysis indicated that the obtained ami-no acid sequence of ZnT shared high identity with ZnT 7s of other species: Danio rerio, 85.6%;Salmo salar, 85.4%; Takifugu ru-bripes, 84.3%;Homo sapiens, 75.1%;Mus musculus 73.8%.Phylogenetic analysis indicated that the acquired ZnT was first clus-tered with ZnT7 of teleost and human, then clusterd with other type ZnT of teleost , which showed that the obtained ZnT was type ZnT 7.