Hemoglobin subunit theta-1 is a protein that in humans is encoded by the HBQ1gene.
Theta-globin mRNA is found in human fetalerythroid tissue but not in adult erythroid or other nonerythroid tissue. The theta-1 gene may be expressed very early in embryonic life, perhaps sometime before 5 weeks. Theta-1 is a member of the human alpha-globin gene cluster that involves five functional genes and two pseudogenes. The order of genes is: 5' - zeta - pseudozeta - mu - pseudoalpha-1 - alpha-2 - alpha-1 - theta-1 - 3'. Research supports a transcriptionally active role for the gene and a functional role for the peptide in specific cells, possibly those of early erythroid tissue.
Gonzalez-Redondo JM, Han IS, Gu YC, Huisman TH (1988). "Nucleotide sequence of the human theta 1-globin gene". Biochem. Genet. 26 (3–4): 207–11. doi:10.1007/BF00561460. PMID3408475.
Hsu SL, Marks J, Shaw JP, et al. (1988). "Structure and expression of the human theta 1 globin gene". Nature. 331 (6151): 94–6. doi:10.1038/331094a0. PMID3422341.
Daniels RJ, Peden JF, Lloyd C, et al. (2001). "Sequence, structure and pathology of the fully annotated terminal 2 Mb of the short arm of human chromosome 16". Hum. Mol. Genet. 10 (4): 339–52. doi:10.1093/hmg/10.4.339. PMID11157797.
De Gobbi M, Viprakasit V, Hughes JR, et al. (2006). "A regulatory SNP causes a human genetic disease by creating a new transcriptional promoter". Science. 312 (5777): 1215–7. doi:10.1126/science.1126431. PMID16728641.