GTSF1L and GTSF2 have two N-terminal CHHC-type Zn-finger domains.

<p>(A) Domain architecture of mouse UPF0224-family proteins. The N-terminal region has two CHHC Zn-finger domains. The black lines indicate the regions used to raise rabbit antibodies against GTSF1L and GTSF2. (B) Alignment of the amino-acid residues of the mouse UPF0224-family proteins using CLUSTAL-X. The first and second CHHC Zn-finger domains are indicated in blue and red, respectively. Asterisks indicate amino-acid residues that are conserved among GTSF1, GTSF1L, and GTSF2. Pluses indicate amino-acid residues that are conserved between GTSF1L and GTSF2.</p>