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Related Concept Videos

Blood Types02:20

Blood Types

Human blood is classified into different types based on the presence of antigens on the red blood cell's surface and antibodies in the plasma. Proper identification of blood type is essential for successful blood transfusion. The International Society of Blood Transfusion has identified 38 human blood types based on the surface antigens on the red blood cells. The most common types are ABO, Rh, and MNS blood types.
ABO blood group
ABO antigens are glycoproteins encoded by genes present on...
Blood Typing01:10

Blood Typing

Understanding an individual's blood group is a critical component of transfusion medicine. It ensures compatibility in blood transfusions, organ transplants, and even during pregnancy. Determining these blood groups involves the ABO and Rh blood typing systems, utilizing specific antigens and corresponding anti-sera to identify an individual's blood type.
Antigens are protein molecules that reside on the surface of red blood cells (RBCs). The ABO and Rh blood typing systems target antigens A,...
Multiple Allele Traits01:49

Multiple Allele Traits

The Concept of Multiple Allelism

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Associated Chromosome Trap for Identifying Long-range DNA Interactions
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Published on: April 23, 2011

A novel HLA-B*54 allele, B*54:25, identified by sequence-based typing.

A H Lim1, S N Song, J Y Lee

  • 1Blood Transfusion Research Institute, Korean Red Cross, Seoul, Korea.

Tissue Antigens
|June 8, 2012
PubMed
Summary

A new human leukocyte antigen (HLA) allele, B*54:25, was identified with a single nucleotide difference from B*54:01:01. This discovery contributes to the understanding of HLA polymorphism and its role in immune responses.

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Area of Science:

  • Immunogenetics
  • Molecular biology

Background:

  • Human leukocyte antigen (HLA) alleles are crucial for immune system function.
  • Accurate HLA typing is essential for transplantation and disease association studies.

Purpose of the Study:

  • To report the identification and characterization of a novel HLA-B allele.

Main Methods:

  • Sequence analysis of the HLA-B gene.
  • Comparison of the novel allele sequence with known alleles in the IMGT/HLA database.

Main Results:

  • A novel allele, designated HLA-B*54:25, was identified.
  • This allele differs from HLA-B*54:01:01 by a single nucleotide substitution (C>G) at position 208 in exon 2.

Conclusions:

  • The identification of HLA-B*54:25 expands the known HLA-B allele repertoire.
  • This finding underscores the importance of continuous HLA allele discovery for comprehensive immunogenetic databases.