Extensive Expansion of the Claudin Gene Family in the Teleost Fish, Fugu rubripes

Table 1.

Nomenclature, Scaffold Location, and Exon/Intron Organization of Fugu Claudin Genes


S/No.

Fugu scaffold number

Fugu claudin number

No. of exons in Fugu

No. of exons in human orthologa

Zebrafish orthologaexon structure
1 2 fu-cldn 5a 1 1
2 fu-cldn 33c 1
3 8 fu-cldn 7a 4 4 zf-cldn 7/M
4 fu-cldn 3c 1 1
5 fu-cldn 3d 1 1 zf-cldn c/S
6 fu-cldn 27c 1
7 fu-cldn 27d 3
8 102 fu-cldn 28b 1 zf-cldn e/S
9 fu-cldn 28c 1
10 fu-cldn 29a 1 zf-cldn d/S
11 fu-cldn 29b 1
12 fu-cldn 30c 1
13 fu-cldn 30d 1 zf-cldn a/b/S
14 107 fu-cldn 18 4 5
15 137 fu-cldn 23b 1
16 161 fu-cldn 12 2 3 zf-cldn 12/S
17 196 fu-cldn 7b 4 4 zf-cldn 7/M
18 281 fu-cldn 23a 1
19 300 fu-cldn 14a 2 3
20 fu-cldn 3a 1 1 zf-cldn h/S
21 fu-cldn 3b 1 1
22 fu-cldn 5c 1 1
23 fu-cldn 6 1 1 zf-cldn j/S
24 302 fu-cldn 13 1
25 fu-cldn 27a 1
26 fu-cldn 27b 1 zf-cldn f/S
27 fu-cldn 28a 1 zf-cldn e/S
28 fu-cldn 30a 1
29 fu-cldn 30b 1 zf-cldn a/b/S
30 415 fu-cldn 20a 1 1
31 457 fu-cldn 31 1 zf-cldn g/S
32 552 fu-cldn 1 4 4 zf-cldn 19/M
33 628 fu-cldn 2 1 2
34 641 fu-cldn 20b 1 1
35 654 fu-cldn 11b 3 3 zf-cldn 11/M
36 696 fu-cldn 32b 1
37 812 fu-cldn 15b 5 5
38 fu-cldn 8a 1 1
39 863 fu-cldn 8b 1 1
40 fu-cldn 8c 1 1
41 fu-cldn 8d 1 1
42 1289 fu-cldn 11a 3 3 zf-cldn 11/M
43 1321 fu-cldn 10d 4 5
44 fu-cldn 10e 3 5
45 1339 fu-cldn 10a 4 5
46 2207 fu-cldn 32a 2 zf-cldn I/S
47 2235 fu-cldn 5b 1 1
48 2355 fu-cldn 19 3 4
49 2558 fu-cldn 26 4
50 2732 fu-cldn 25 4 zf-cldn 10/M
51 2743 fu-cldn 14b 1 3
52 fu-cldn 33b 1
53 2835 fu-cldn 15a 4 5
54 2840 fu-cldn 10b 4 5
55 fu-cldn 10c 4 5
56
3054
fu-cldn 33a
1


  • Each of the predicted 56 Fugu claudin genes was named according to its human ortholog (see Fig. 1), with alphabetical suffixes if there was more than one Fugu ortholog. If a human ortholog could not be identified, the identity of such genes was confirmed after phylogenetic analysis, and new numbers were assigned from 25 onward. The scaffolds on which the different Fugu claudin genes are located are listed. The exon—intron structures of Fugu genes were predicted based on their homology to known claudin genes from other organisms, and, where the boundaries were not clear, the intron acceptor and donor sites and the corresponding open reading frames were determined by visual inspection. The number of exons encoding the human orthologs is provided for reference. Where data were available, zebrafish orthologs were classified into single (S) or multiple (M) exon genes (Kollmar et al. 2001).

  • a Where applicable/data available.

This Article

  1. Genome Res. 14: 1248-1257

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