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676 渔 业 研 究 第 47 卷
表 3 WNK 基因的外显子数量
Tab. 3 The number of exons in the WNK genes
种类 外显子数量 Mumber of exons
Species
WNK1a WNK1b WNK2 WNK3 WNK4a WNK4b
斑点叉尾鮰 I. punctatus 24 34 30 24 20 27
长鳍真鮰 I. furcatus 25 29 25 23 19 26
斑马鱼 D. rerio 25 32 34 26 21 21
海水青鳉 O. melastigma 27 39 29 24 20 −
红鳍东方鲀 T. rubripes 31 40 30 25 22 23
非洲爪蟾 X. tropicalis 33 28 27 21
红原鸡 G. gallus 33 32 − 20
人类 H. sapiens 31 34 27 18
小鼠 M. musculus 34 32 27 19
注:人类、小鼠、红原鸡和非洲爪蟾中只存在 1 个 WNK1 和 1 个 WNK4 基因,进化关系上不能明确其具体与鱼类的更细致划分。
Notes: In H. sapiens, M. musculus, G. gallus and X. tropicalis, there is only one WNK1 gene and one WNK4 gene. In terms of evolutionary
relationships, it is unclear how they specifically correspond to the more detailed classification in fish.
Motif 7 STKc_WNK1 UTR
a) WNK1a b) c)
Motif 3 OSRI_C CDS
Motif 9 PHA03247 superfamily
Motif 2 PAT1 superfamily
Motif 10 OSR1_C superfamily
Motif 1 STKc_WNK
WNK1b
Motif 4 STKc_WNK3
Motif 6 Atrophin-1 superfamily
Motif 5 STKc_WNK4
Motif 8 SOBP superfamily
WNK2
WNK3
WNK4a
WNK1b
5’ 3’ 5’ 3’ 5’ 3’
0 600 1 200 1 800 2 400 3 000 0 600 1 200 1 800 2 400 3 000 0 20 000 40 000 60 000 80 000 100 000
图 3 斑点叉尾鮰WNK 成员的结构
Fig. 3 The structure of WNK members in I. punctatus
注:a. 斑点叉尾鮰WNK 成员之间的系统发育关系和保守蛋白质基序(Motif)的分布,底部刻度代表蛋白质长度(aa) ,
总共鉴定了 10 个基序。b. 预测的斑点叉尾鮰WNK 蛋白的保守蛋白结构域。灰色条形表示每个蛋白质序列的长度,保守的蛋
白激酶结构域用彩色框表示,底部刻度代表蛋白质长度(aa) 。STKc. 丝氨酸/苏氨酸蛋白激酶,催化结构域;OSR1_C. 氧化
应激反应激酶 1 C 端结构域;Atrophin-1. 萎缩蛋白−1;PAT1. mRNA 衰变因子 PAT1 结构域;SOBP. 正弦眼形蛋白结合蛋白
同源物;PHA03247. 保守结构域数据库中的一个超家族。c. 斑点叉尾鮰WNK 基因的外显子−内含子结构。黄色框代表外显子
(CDS) ,灰色线代表内含子,绿色框代表 5’和 3’非翻译区(UTR) ,底部刻度代表基因在染色体上的长度(bp) 。
Notes: a. The phylogenetic relationships among WNK members in I. punctatus and the distribution of conserved protein motifs
(Motif), the bottom scale represents protein length (amino acid), a total of 10 motifs are identified. b. Predicted conserved protein domains
of WNK proteins in I. punctatus. Gray bars represent the length of each protein sequence, and conserved protein kinase domains are
represented by colored boxes, the bottom scale represents protein length (amino acid). STKc. Serine/threonine protein kinases, catalytic
domain; OSR1_C. Oxidative-stress-responsive kinase 1 C-terminal domain; Atrophin-1. Atrophin-1; PAT1. mRNA decay factor PAT1
domain; SOBP. Sine oculis-binding protein homologue; PHA03247. A superfamily in conservative domain database. c. Exon-intron
structure of I. punctatus WNK genes. Yellow boxes represent exons (CDS), gray lines represent introns, and green boxes represent 5’ and
3’ untranslated regions (UTR), the bottom scale represents the length of the gene on the chromosome (base pair).

