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  • Title: Red cell glucose phosphate isomerase (GPI): a molecular study of three novel mutations associated with hereditary nonspherocytic hemolytic anemia.
    Author: Repiso A, Oliva B, Vives-Corrons JL, Beutler E, Carreras J, Climent F.
    Journal: Hum Mutat; 2006 Nov; 27(11):1159. PubMed ID: 17041899.
    Abstract:
    Molecular characteristics of red blood cell (RBC) glucose phosphate isomerase (GPI) deficiency are described in two Spanish patients with chronic nonspherocytic hemolytic anemia. One patient, with residual GPI activity in RBCs of around 7% (GPI-Catalonia), is homozygous for the missense mutation c.1648A>G (p.Lys550Glu) in exon 18. The other patient, with residual activity in RBCs of around 20% (GPI-Barcelona), was found to be a compound heterozygote for two different missense mutations: c.341A>T (p.Asp113Val) in exon 4 and c.663T>G (p.Asn220Lys) in exon 7. Molecular modeling using the human crystal structure of GPI as a model was performed to determine how these mutations could affect enzyme structure and function.
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