B*5101-β2MG with bound peptide 1e27 | ||
major histocompatibility complex (human), class I, B51
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Alleles | B*5101, 5102, 5103, . . . |
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Structure (See HLA-B) | Available 3D structures |
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EBI-HLA | B*5101 | 1e28, 1e27 |
HLA-B51 (B51) is an HLA-B serotype. The serotype identifies the more common HLA-B*51 gene products.[1]
B51 is a split antigen of the broad antigen B5, and is a sister serotype of B52.[2] There are a large number of alleles within the B*51 allele group. B51 is associated with several diseases, including Behçet's disease.
Contents |
B*51 | B51 | B5 | B52 | B53 | Sample |
allele | % | % | % | % | size (N) |
*5101 | 96 | 2 | 1 | 1899 | |
*5102 | 73 | 3 | 6 | 11 | 218 |
*5104 | 83 | 17 | 6 | ||
*5105 | 48 | 16 | 24 | 25 | |
*5106 | 64 | 7 | 12 | 42 | |
*5107 | 78 | 9 | 68 | ||
*5108 | 77 | 3 | 154 | ||
*5109 | 86 | 43 | |||
B**5102 also reacts to B5102 - 3%, **5103 with B5103 | |||||
Alleles link-out to IMGT/HLA Databease at EBI |
There are 71 alleles, 57 amino acid sequence variants in B51 of which 4 are nulls. Of these only 9 are frequent enough to have been reliably serotyped. B*5101 is the most common, but others have a large regional abundance.
freq | ||
ref. | Population | (%) |
[4] | Bulgaria | 20.9 |
[4] | Georgia Tibilisi Georgians | 15.7 |
[4] | India Tamil Nadu Nadar | 15.6 |
[4] | China North Han | 14.8 |
[4] | Georgia Tibilisi Kurds | 12.1 |
[4] | India Andhra Pradesh Golla | 12.0 |
[4] | China Qinghai Hui | 11.4 |
[4] | India New Delhi | 9.8 |
[4] | Madeira | 9.7 |
[4] | South Africa Natal Tamil | 9.2 |
[4] | USA Hawaii Okinawa | 8.7 |
[4] | Cape Verde Northwestern Islands | 8.1 |
[4] | Cape Verde Southeastern Islands | 7.3 |
[4] | India Mumbai Marathas | 6.8 |
[4] | Russia Tuva pop 2 | 6.1 |
[4] | Israel Arab Druse | 6.0 |
[4] | China Inner Mongolia | 5.9 |
[4] | Czech Republic | 5.7 |
[4] | Finland | 5.6 |
[4] | Iran Baloch | 8.1 |
[4] | Brazil | 5.1 |
[4] | Mexico Guadalajara Mestizos | 4.9 |
[4] | New Mexico Canoncito Navajo | 4.9 |
[4] | China South Han | 4.6 |
[4] | India North Hindus | 3.8 |
[4] | Thailand | 3.1 |
[4] | Ivory Coast Akan Adiopodoume | 2.3 |
[4] | Singapore Chinese Han | 2.3 |
[4] | Singapore Javanese Indonesians | 2.0 |
[4] | Taiwan Saisiat | 2.0 |
[4] | Kenya | 1.7 |
[4] | Cameroon Yaounde | 1.6 |
[4] | Senegal Niokholo Mandenka | 1.6 |
[4] | Guinea Bissau | 1.5 |
[4] | USA Arizona Pima | 1.1 |
[4] | Venezuela Perja Mountain Bari | 1.1 |
[4] | Taiwan Pazeh | 0.9 |
[4] | China Guangdong Meizhou Han | 0.5 |
[4] | Israel Ashk. & Non Ashk. Jews | 0.5 |
[4] | Singapore Thai | 3.0 |
[4] | Iran Baloch | 1.0 |
[4] | USA Asian | 1.0 |
Bw51 was associated with Behçet's disease,[5] in endemic (versus epidemic) mucocutaneous lymph node syndrome,[6] susceptibility to the virus that causes German measles infection.[7]
freq | ||
ref. | Population | (%) |
[4] | Mexico Sonora Seri | 1.5 |
[4] | Thailand | 1.4 |
[4] | Singapore Chinese | 1.3 |
[4] | Hong Kong Chinese | 1.0 |
[4] | USA Natives | 0.8 |
[4] | Mexico Zaptotec Oaxaca | 0.7 |
[4] | South Korea pop 3 | 0.6 |
[4] | Shijiazhuang Tianjian Han | 0.5 |
[4] | China Guangxi Maonan | 0.5 |
[4] | Japan (5) | 0.4 |
[4] | USA Asian | 0.4 |
[4] | USA Hispanic | 0.4 |
[4] | USA African America | 0.2 |
Behçet's disease is an inflammation of the wall of blood vessels that can involve the eyes, skin, and the rest of the body.[8] Several alleles of B51 (B*5101, B*5108, B*5105, and B*5104) are found in disease, and linkage to markers, D6S285, in the HLA locus was strong (P>0.005).[9] Homozygotes of B51 showed considerably high risk for disease indicating a possible gene-dose effect. B51 is capable of distinguishing several varieties of disease. HLA-B51 is found more frequently in disease that has an eye involvement.[10] However it is less common in some regions when there is increased neurological involvement.[11] The MICA*009 allele has been found to also associated with ABD when B51 is also present,[12] IL-8 and other cytokines may also be involved.[13][14] Sister chromatid exchange has also been observed more frequently in B51(+) ABD.[15]
However, B51 tends not to be found in ABD when a certain SUMO4 gene variant is involved,[16] and symptoms appear to be milder when HLA-B27 is present.[17]
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