HCLS1-associated protein X-1 is a protein that in humans is encoded by the HAX1gene.[5][6][7]
The protein encoded by this gene is known to associate with HS1, a substrate of Src family tyrosine kinases. It also interacts with the product of PKD2 gene, mutations in which are associated with autosomal-dominant polycystic kidney disease, and with F-actin-binding protein, cortactin. It was earlier thought that this gene product is mainly localized in the mitochondria, however, recent studies indicate it to be localized in the cell body. Two transcript variants encoding different isoforms have been found for this gene.[7]
In 2015, localization of the protein to P-bodies was demonstrated.[8]
HAX1 has been shown to interact with IL1A.[10] The protein has also been shown to interact with the 3' untranslated regions of vimentin and DNA polymerase B transcripts.[8] The protein has been shown to interact with the mitochondrial protein disaggregase Skd3 and Skd3 has been shown to be essential for HAX1 solubility within mitochondria.[11]
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^Suzuki Y, Demoliere C, Kitamura D, Takeshita H, Deuschle U, Watanabe T (Apr 1997). "HAX-1, a novel intracellular protein, localized on mitochondria, directly associates with HS1, a substrate of Src family tyrosine kinases". J Immunol. 158 (6): 2736–44. doi:10.4049/jimmunol.158.6.2736. PMID9058808.
^Klein C, Grudzien M, Appaswamy G, Germeshausen M, Sandrock I, Schäffer AA, Rathinam C, Boztug K, Schwinzer B (January 2007). "HAX1 deficiency causes autosomal recessive severe congenital neutropenia (Kostmann disease)". Nat. Genet. 39 (1): 86–92. doi:10.1038/ng1940. PMID17187068. S2CID22757727.
^Yin H, Morioka H, Towle C A, Vidal M, Watanabe T, Weissbach L (Aug 2001). "Evidence that HAX-1 is an interleukin-1 alpha N-terminal binding protein". Cytokine. 15 (3): 122–37. doi:10.1006/cyto.2001.0891. ISSN1043-4666. PMID11554782.
Rual JF, Venkatesan K, Hao T, Hirozane-Kishikawa T, Dricot A, Li N, Berriz GF, Gibbons FD, Dreze M (2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature. 437 (7062): 1173–78. Bibcode:2005Natur.437.1173R. doi:10.1038/nature04209. PMID16189514. S2CID4427026.
Yin H, Morioka H, Towle CA, Vidal M, Watanabe T, Weissbach L (2001). "Evidence that HAX-1 is an interleukin-1 alpha N-terminal binding protein". Cytokine. 15 (3): 122–37. doi:10.1006/cyto.2001.0891. PMID11554782.