XK (also known as Kell blood group precursor) is a protein found on human red blood cells and other tissues which is responsible for the Kx antigen which helps determine a person's blood type.
Clinical significance [ edit ]
The Kx antigen plays a role in matching blood for
Mutation of XK protein may lead to
McLeod syndrome, a multi-system disorder characterized by [1 ] hemolytic anemia, myopathy, acanthocytosis, and chorea. [2 ]
XK is located on the
X chromosome and absence of the XK protein is an X-linked disease. [3 ]
Function [ edit ]
XK is a
membrane transport protein of unknown action. [4 ]
References [ edit ]
^ Arnaud L, Salachas F, Lucien N et al. (March 2009). "Identification and characterization of a novel XK splice site mutation in a patient with McLeod syndrome". Transfusion 49 (3): 479–84. doi: 10.1111/j.1537-2995.2008.02003.x. PMID 19040496.
^ Malandrini, A; Fabrizi, GM; Truschi, F; Di Pietro, G; Moschini, F; Bartalucci, P; Berti, G; Salvadori, C et al. (1994). "Atypical McLeod syndrome manifested as X-linked chorea-acanthocytosis, neuromyopathy and dilated cardiomyopathy: report of a family". Journal of the neurological sciences 124 (1): 89–94. doi: 10.1016/0022-510X(94)90016-7. PMID 7931427.
^ Ho, MF; Monaco, AP; Blonden, LA; Van Ommen, GJ; Affara, NA; Ferguson-Smith, MA; Lehrach, H (1992). "Fine mapping of the McLeod locus (XK) to a 150-380-kb region in Xp21". American Journal of Human Genetics 50 (2): 317–30. PMC 1682457. PMID 1734714.
^ Jung, HH; Russo, D; Redman, C; Brandner, S (2001). "Kell and XK immunohistochemistry in McLeod myopathy". Muscle & nerve 24 (10): 1346–51. doi: 10.1002/mus.1154. PMID 11562915.
External links [ edit ]