major histocompatibility complex (human), class I, B49 Alleles B*4901, B*4902, B*4903 Structure (See HLA-B) Symbol(s) HLA-B EBI-HLA B*4901 B*4902 B*4903 Locus chr.6 6p21.31
HLA-B49 (B49) is an HLA-B serotype. B49 is a split antigen from the B21 broad antigen, the sister serotype B50. The serotype identifies the more common HLA-B*50 gene products. (For terminology help see: HLA-serotype tutorial)
Serotype + B49 and B21 serotype recognition of some more common HLA B*49 allelesderived from IMGT/HLA B*49 B49 B21 Sample allele % % size (N) 4901 94 1 3002
Allele distribution + HLA B*4901 frequencies freq ref. Population (%) Portugal North8.7 Spain Basque Gipuzkoa Province6.1 Madeira5.9 Cameroon Yaounde5.4 Morocco Nador Metalsa (Berber)5.1 Kenya Nandi4.6 Sudanese4.3 Portugal South4.1 Tunisia Tunis4.0 India Jalpaiguri Toto3.8 Senegal Niokholo Mandenka3.7 Uganda Kampala3.7 Spain Eastern Andalusia3.5 Tunisia3.5 Georgia Tbilisi Kurds3.4 Spain Catalonia Girona3.4 Italy North (1)3.3 Cameroon Beti3.2 Israel Ashkenazi and Non Ashkenazi Jews3.2 Guinea Bissau3.1 France South East2.7 Israel Arab Druse2.5 Mali Bandiagara2.5 Jordan Amman2.4 Tunisia Ghannouch2.4 Georgia Tbilisi Georgians2.3 Saudi Arabia Guraiat and Hail2.2 Cameroon Bamileke1.9 Czech Republic1.9 Georgia Svaneti Svans1.9 Macedonia (4)1.9 Bulgaria1.8 Romanian1.6 Italy Bergamo1.1 Zambia Lusaka1.1 Belgium1.0 China North Han1.0 India Andhra Pradesh Golla1.0 Ireland Northern1.0 South African Natal Zulu1.0
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