Hemoglobin subunit theta 1 (HBQ1)

Hemoglobin subunit theta 1 is a member of the human alpha-globin gene cluster, encoding a globin protein that is mainly expressed in fetal erythroid tissues in very early embryonic development. Unlike the major adult hemoglobins, theta-globin is predominately absent from adult erythroid tissues. Its primary roles include oxygen transport as part of fetal hemoglobin, and emerging evidence points to a regulatory or antioxidative function in non-erythroid cells, particularly in cancer where its overexpression is linked to increased cell proliferation and poor clinical outcome in lung adenocarcinoma. The gene is located on chromosome 16 within the alpha-globin cluster, and its sequence shares homology but not identity with other alpha-globin subunits, suggesting a distinct functional role in development and disease.

Other names

Hemoglobin theta-1 chainTheta-1-globinHBQhemoglobin, theta 1hemoglobin subunit θ 1haemoglobin subunit theta 1haemoglobin subunit θ 1

For drugs that would theoretically target this molecule, mechanisms might include inhibition of oncogenic functions (cell proliferation), modulation of oxygen transport or antioxidant capacity, but no such drugs are documented in current sources.