IthaID: 230



Names and Sequences

Functionality: Globin gene causative mutation Pathogenicity: Pathogenic / Likely Pathogenic
Common Name: CD 106 CTG>CGG [Leu>Arg] HGVS Name: HBB:c.320T>G
Hb Name: Hb Terre Haute Protein Info: β 106(G8) Leu>Arg

Context nucleotide sequence:
CCTCTTATCTTCCTCCCACAGCTCC [A/C/G/T] GGGCAACGTGCTGGTCTGTGTGCTG (Strand: -)

Protein sequence:
MVHLTPEEKSAVTALWGKVNVDEVGGEALGRLLVVYPWTQRFFESFGDLSTPDAVMGNPKVKAHGKKVLGAFSDGLAHLDNLKGTFATLSELHCDKLHVDPENFRLRGNVLVCVLAHHFGKEFTPPVQAAYQKVVAGVANALAHKYH

Also known as:

Comments: Leu>Arg substitution at position β106 (G8) associated with disruption of the heme pocket and heme loss. Presented with a severe Heinz body haemolytic anaemia and globin chain imbalance. Reported in a heterozygous state in a family with a severe, dominantly inherited β-thalassemia phenotype. Extremely unstable variant; its identity could only be studied by biosynthetic analysis in which a radio-active abnormal peak was observed. Isopropanol and heat stability tests were inconclusive [PMID: 429365, 447835].

We follow the HGVS sequence variant nomenclature and IUPAC standards.

External Links

Phenotype

Hemoglobinopathy Group: Thalassaemia and Structural Haemoglobinopathy
Hemoglobinopathy Subgroup: β-thalassaemia, β-chain variant
Allele Phenotype:Thalassaemia dominant
Dominant
Stability: Hyperunstable
Oxygen Affinity: N/A
Associated Phenotypes: Haemolytic anaemia [HP:0001878]
Ineffective erythropoiesis [HP:0010972]

Location

Chromosome: 11
Locus: NG_000007.3
Locus Location: 71894
Size: 1 bp
Located at: β
Specific Location: Exon 3

Other details

Type of Mutation: Point-Mutation(Substitution)
Effect on Gene/Protein Function: Missense codons (Protein Structure)
Ethnic Origin: North European, French
Molecular mechanism: Altered heme pocket
Inheritance: Dominant
DNA Sequence Determined: Yes

In silico pathogenicity prediction

Sequence Viewer

Note: The NCBI Sequence Viewer is not installed on the ITHANET servers but it is embedded in this page from the NCBI. Therefore, IthaGenes has no responsibility over any temporary unavailability of the service. In such a case, please Refresh the page or retry at a later stage. Otherwise, use this external link.

Publications / Origin

  1. Adams JG, Steinberg MH, Boxer LA, Baehner RL, Forget BG, Tsistrakis GA, The structure of hemoglobin Indianapolis [beta112(G14) arginine]. An unstable variant detectable only by isotopic labeling., The Journal of biological chemistry, 254(9), 3479-82, 1979 PubMed
  2. Adams JG, Boxer LA, Baehner RL, Forget BG, Tsistrakis GA, Steinberg MH, Hemoglobin Indianapolis (beta 112[G14] arginine). An unstable beta-chain variant producing the phenotype of severe beta-thalassemia., J. Clin. Invest., 63(5), 931-8, 1979 PubMed
  3. Coleman MB, Steinberg MH, Adams JG, Hemoglobin Terre Haute arginine beta 106. A posthumous correction to the original structure of hemoglobin Indianapolis., The Journal of biological chemistry, 266(9), 5798-800, 1991 PubMed
  4. Girodon E, Ghanem N, Vidaud M, Riou J, Martin J, Galactéros F, Goossens M, Rapid molecular characterization of mutations leading to unstable hemoglobin beta-chain variants., Annals of hematology, 65(4), 188-92, 1992 PubMed
  5. Thom CS, Dickson CF, Gell DA, Weiss MJ, Hemoglobin variants: biochemical properties and clinical correlates., Cold Spring Harb Perspect Med, 3(3), a011858, 2013 PubMed
Created on 2010-06-16 16:13:15, Last reviewed on 2019-06-24 15:02:21 (Show full history)

Disclaimer: The information on this website is provided as an information resource only and must not to be used as a substitute for professional diagnosis and treatment. The ITHANET Portal and IthaGenes are not responsible or liable for any advice, course of treatment, diagnosis or any other information, services or products that an individual obtains through this website.