= Human globin gene records in NCBI Gene
https://www.ncbi.nlm.nih.gov/gene/3039
Primary human gene annotations: HBA1, Gene 3039, https://www.ncbi.nlm.nih.gov/gene/3039 ; HBA2, Gene 3040, https://www.ncbi.nlm.nih.gov/gene/3040 ; HBB, Gene 3043, https://www.ncbi.nlm.nih.gov/gene/3043 ; HBG1, Gene 3047, https://www.ncbi.nlm.nih.gov/gene/3047 ; HBG2, Gene 3048, https://www.ncbi.nlm.nih.gov/gene/3048 . Summary/nomenclature: alpha, beta and gamma gene products and alpha/beta HbA composition. HBG1/HBG2 summary distinguishes A-gamma and G-gamma products at residue 136. Official indexed summaries verified; direct Gene readers returned browser challenges. No clinical management guidance is drawn from these records.
Additional verified RefSeq-summary detail for HBA1/HBA2: the alpha-globin loci are on chromosome 16, their reference coding sequences are identical, and their 3-prime untranslated regions differ substantially. The HBA2 record provides these distinctions explicitly: https://www.ncbi.nlm.nih.gov/gene/3040/ . The official HBG1 summary is also available through https://www.ncbi.nlm.nih.gov/gtr/genes/3047/ .
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