Hereditary spherocytosis is associated with decreased pyruvate kinase activity due to impaired structural integrity of the red blood cell membrane

2019 ◽  
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Felicia Loewecke ◽  
Henner Morbach ◽  
Sabrina Kraus ◽  
Hermann Einsele ◽  
...  
Diabetes ◽  
1983 ◽  
Vol 32 (11) ◽  
pp. 1017-1022 ◽  
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A. Camagna ◽  
R. De Pirro ◽  
L. Tardella ◽  
L. Rossetti ◽  
R. Lauro ◽  
...  

Diabetes ◽  
1983 ◽  
Vol 32 (11) ◽  
pp. 1017-1022 ◽  
Author(s):  
A. Camagna ◽  
R. D. Pirro ◽  
L. Tardella ◽  
L. Rossetti ◽  
R. Lauro ◽  
...  

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J. L. Vives-Corrons ◽  
V. Rizzuto ◽  
P. Gómez-Ramírez ◽  
J. Sevilla Navarro ◽  
...  

Blood ◽  
1995 ◽  
Vol 85 (3) ◽  
pp. 634-640 ◽  
Author(s):  
P Jarolim ◽  
HL Rubin ◽  
V Brabec ◽  
L Chrobak ◽  
AS Zolotarev ◽  
...  

To elucidate the molecular basis of band 3 deficiency in a recently defined subset of patients with autosomal dominant hereditary spherocytosis (HS), we screened band 3 cDNA for single-strand conformation polymorphism (SSCP). In 5 of 17 (29%) unrelated HS subjects with band 3 deficiency, we detected substitutions R760W, R760Q, R808C, and R870W that were all coinherited with the HS phenotype. The involved arginines are highly conserved throughout evolution. To examine whether or not the product of the mutant allele is inserted into the membrane, we studied one HS subject who was doubly heterozygous for the R760Q mutation and the K56E (band 3sMEMPHIS) polymorphism that results in altered electrophoretic mobility of the band 3 Memphis proteolytic fragments. We detected only the band 3MEMPHIS in the erythrocyte membrane indicating that the protein product of the mutant, R760Q, band 3 allele is absent from the red blood cell membrane. These findings suggest that the R760Q substitution, and probably the other arginine subsitutions, produce band 3 deficiency either by precluding incorporation of the mutant protein into the red blood cell membrane or by leading to loss of mutant protein from differentiating erythroid precursors.


2005 ◽  
Vol 74 (5) ◽  
pp. 396-401 ◽  
Author(s):  
Paulo Roberto Moura Lima ◽  
Mariana Ozello Baratti ◽  
Maria Lucia Chiattone ◽  
Fernando Ferreira Costa ◽  
Sara Teresinha Olalla Saad

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