TCDB is operated by the Saier Lab Bioinformatics Group
TCIDNameDomainKingdom/PhylumProtein(s)
8.A.140.1.1









Inositol 1,4,5-triphosphate receptor associated 2, IRAG2, JAW1, LRMP, of 555 aas and one C-terminal TMS. It plays a role in the delivery of peptides to major histocompatibility complex (MHC) class I molecules which occurs in a transporter associated with antigen processing (TAP)-independent manner. It may also play a role in taste signal transduction via ITPR3 as well as during fertilization in pronucleus congression and fusion. It regulates HCN4 channels (Peters et al. 2020). A recurrent missense variant in ITPR3 causes demyelinating Charcot-Marie-Tooth disease with variable severity (Beijer et al. 2025).

Eukaryota
Metazoa, Chordata
HCN4 channel regulator, IRAG2 of Homo sapiens
8.A.140.1.2









Uncharacterized protein of 959 aas and 2 TMSs, one about one-fourth from the N-terminus and one at the C-terminus.

Eukaryota
Metazoa, Chordata
UP of Pygoscelis adeliae (Adelie penguin)
8.A.140.1.3









Lymphoid-restricted membrane protein-like, LRMP-L, isoform X1 of 1370 aas and one C-terminal TMS.

Eukaryota
Metazoa, Cnidaria
LRMP-L of Dendronephthya gigantea
8.A.140.1.4









Uncharacterized protein of 706 aas and one C-terminal TMS.

Eukaryota
Metazoa, Cnidaria
UP of Hydra vulgaris (swiftwater hydra)
8.A.140.2.1









Uncharacterized protein of 475 aas and one C-terminal TMS [Penaeus vannamei

Eukaryota
Metazoa, Arthropoda
UP of Penaeus vannamei
8.A.140.2.2









Uncharacterized protein of 706 aas and 1 TMS, about one-third from the C-terminus.

Eukaryota
Metazoa, Arthropoda
UP of Lamprigera yunnana (firefly)