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Cis AB
Cis AB is a type of rare mutation in the ABO gene. It happens when the transferase allele contains a mix of amino acids from either A or B alleles, producing a bifunctional enzyme that can produce both types of antigens, usually with one weaker than the other. This results in a serum test result much like the standard, separate (trans) AB phenotype, although the weaker antigen can occasionally fail to be detected. It complicates the basic inheritance pattern (as the allele comes from one parent only) and blood-transfusion compatibility matching for ABO blood group system, ABO blood typing. Different DNA mutations of either type A or Type B alleles change amino acids in enzyme transferase A or B, homologous enzymes differing in only four of 354 amino acids (R176G, G235S, L266M, and G268A). A single change in ABO gene DNA could switch type B to type A and then, a new hybrid enzyme can produce both weak B and A2 (in serum test, A2B, and A2B3). The most common mutation is an A105 alle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mutation
In biology, a mutation is an alteration in the nucleic acid sequence of the genome of an organism, virus, or extrachromosomal DNA. Viral genomes contain either DNA or RNA. Mutations result from errors during DNA or viral replication, mitosis, or meiosis or other types of damage to DNA (such as pyrimidine dimers caused by exposure to ultraviolet radiation), which then may undergo error-prone repair (especially microhomology-mediated end joining), cause an error during other forms of repair, or cause an error during replication ( translesion synthesis). Mutations may also result from substitution, insertion or deletion of segments of DNA due to mobile genetic elements. Mutations may or may not produce detectable changes in the observable characteristics ( phenotype) of an organism. Mutations play a part in both normal and abnormal biological processes including: evolution, cancer, and the development of the immune system, including junctional diversity. Mutati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alanine
Alanine (symbol Ala or A), or α-alanine, is an α-amino acid that is used in the biosynthesis of proteins. It contains an amine group and a carboxylic acid group, both attached to the central carbon atom which also carries a methyl group side chain. Consequently it is classified as a non-polar, aliphatic α-amino acid. Under biological conditions, it exists in its zwitterionic form with its amine group protonated (as ) and its carboxyl group deprotonated (as ). It is non-essential to humans as it can be synthesized metabolically and does not need to be present in the diet. It is encoded by all codons starting with G C (GC U, GCC, GC A, and GCG). The L-isomer of alanine (left-handed) is the one that is incorporated into proteins. L-alanine is second only to L-leucine in rate of occurrence, accounting for 7.8% of the primary structure in a sample of 1,150 proteins. The right-handed form, D-alanine, occurs in peptides in some bacterial cell walls (in peptidoglycan) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blood
Blood is a body fluid in the circulatory system of humans and other vertebrates that delivers necessary substances such as nutrients and oxygen to the cells, and transports metabolic waste products away from those same cells. Blood is composed of blood cells suspended in blood plasma. Plasma, which constitutes 55% of blood fluid, is mostly water (92% by volume), and contains proteins, glucose, mineral ions, and hormones. The blood cells are mainly red blood cells (erythrocytes), white blood cells (leukocytes), and (in mammals) platelets (thrombocytes). The most abundant cells are red blood cells. These contain hemoglobin, which facilitates oxygen transport by reversibly binding to it, increasing its solubility. Jawed vertebrates have an adaptive immune system, based largely on white blood cells. White blood cells help to resist infections and parasites. Platelets are important in the clotting of blood. Blood is circulated around the body through blood vessels by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sen-itiroh Hakomori
was a Japanese-American biochemist. Hakomori was born in Sendai on 13 February 1929, and graduated from Tohoku University Medical College in 1951. He elected for further study in biochemistry under Hajime Masamune. As a Fulbright Scholar, Hakomori also worked with Roger W. Jeanloz. In 1959, Hakomori began teaching at the Tohoku College of Pharmaceutical Science. Hakomori returned to the United States in 1964, again working under Jeanloz. In 1966, Hakomori joined the faculty of Brandeis University. He left Massachusetts two years later for a position at the University of Washington. Upon moving to Washington, Hakomori concurrently began work for the Fred Hutchinson Cancer Research Center and later the Pacific Northwest Research Institute. The Society for Glycobiology gave Hakomori its Karl Meyer Award in 1995. He was elected member of the Finnish Society of Sciences and Letters in 1987 and of the National Academy of Sciences The National Academy of Sciences (NAS) is a United ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bombay Phenotype
Mumbai ( ; ), also known as Bombay ( ; its official name until 1995), is the capital city of the Indian state of Maharashtra. Mumbai is the financial capital and the most populous city proper of India with an estimated population of 12.5 million (1.25 crore). Mumbai is the centre of the Mumbai Metropolitan Region, the seventh-most populous metropolitan area in the world with a population of over 23 million (2.3 crore). Mumbai lies on the Konkan coast on the west coast of India and has a deep natural harbour. In 2008, Mumbai was named an alpha world city. Mumbai has the highest number of billionaires out of any city in Asia. The seven islands that constitute Mumbai were earlier home to communities of Marathi language-speaking Koli people. For centuries, the seven islands of Bombay were under the control of successive indigenous rulers before being ceded to the Portuguese Empire, and subsequently to the East India Company in 1661, as part of the dowry ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genotype
The genotype of an organism is its complete set of genetic material. Genotype can also be used to refer to the alleles or variants an individual carries in a particular gene or genetic location. The number of alleles an individual can have in a specific gene depends on the number of copies of each chromosome found in that species, also referred to as ploidy. In diploid species like humans, two full sets of chromosomes are present, meaning each individual has two alleles for any given gene. If both alleles are the same, the genotype is referred to as Zygosity, homozygous. If the alleles are different, the genotype is referred to as heterozygous. Genotype contributes to phenotype, the observable traits and characteristics in an individual or organism. The degree to which genotype affects phenotype depends on the trait. For example, the petal color in a pea plant is exclusively determined by genotype. The petals can be purple or white depending on the alleles present in the pea plan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hh Antigen System
hh, or the Bombay blood group, is a rare blood type. This blood phenotype was first discovered in Bombay by Y. M. Bhende in 1952. It is mostly found in the Indian subcontinent (India, Bangladesh, Pakistan) and Iran. Problems with blood transfusion The first person found to have the Bombay phenotype had a blood type that reacted to other blood types in a way never seen before. The serum contained antibodies that attacked all red blood cells of normal ABO phenotypes. The red blood cells appeared to lack all of the ABO blood group antigens and to have an additional antigen that was previously unknown. Individuals with the rare Bombay phenotype (hh) do not express H antigen (also called substance H), the antigen which is present in blood group O. As a result, they cannot make A antigen (also called substance A) or B antigen (substance B) on their red blood cells, whatever alleles they may have of the A and B blood-group genes, because A antigen and B antigen are made from H antigen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Red Cross
The American National Red Cross is a Nonprofit organization, nonprofit Humanitarianism, humanitarian organization that provides emergency assistance, disaster relief, and disaster preparedness education in the United States. Clara Barton founded the organization in 1881 after initially learning of the Red Cross, founded 1863 in Geneva, Switzerland. It is the designated American affiliate of the International Federation of Red Cross and Red Crescent Societies and the International Red Cross and Red Crescent Movement. The organization has provided services after many notable disasters, including the sinking of the Titanic, RMS ''Titanic'' in 1912, World War I, the Spanish flu, Spanish flu pandemic of 1918, World War II, Hurricane Katrina disaster relief, Hurricane Katrina, and the 2023 Hawaii wildfires, Maui wildfires of 2023. It also provides blood banking services. History and organization Founders Clara Barton established the American Red Cross in Dansville, Livingst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BGMUT
The BGMUT (Blood Group antigen gene MUTation) Database documents allele, allelic variations in the genes encoding for human blood group systems. It was set up in 1999 through an initiative of the Human Genome Variation Society (HGVS). Since 2006, it has been a part of the dbRBC (database Red Blood Cells) resource of National Center for Biotechnology Information, NCBI at the National Institutes of Health, NIH. In addition to being a repository of the genetic variations of the blood group antigen-encoding genes, the database also provides information on the blood group systems, the genes that encode them, the serology, serological phenotypes associated with the alleles of the genes, etc. Information on genetic variations in some non-human Homology (biology)#Orthology, orthologous genes is also provided. References External links * {{cite web , url = https://www.ncbi.nlm.nih.gov/gv/rbc/ , title = Blood Group Antigen Gene Mutation Database (BGMUT) , vauthors=Blumenfeld OO, Patna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glycine
Glycine (symbol Gly or G; ) is an amino acid that has a single hydrogen atom as its side chain. It is the simplest stable amino acid. Glycine is one of the proteinogenic amino acids. It is encoded by all the codons starting with GG (GGU, GGC, GGA, GGG). Glycine disrupts the formation of alpha-helices in secondary protein structure. Its small side chain causes it to favor random coils instead. Glycine is also an inhibitory neurotransmitter – interference with its release within the spinal cord (such as during a '' Clostridium tetani'' infection) can cause spastic paralysis due to uninhibited muscle contraction. It is the only achiral proteinogenic amino acid. It can fit into both hydrophilic and hydrophobic environments, due to its minimal side chain of only one hydrogen atom. History and etymology Glycine was discovered in 1820 by French chemist Henri Braconnot when he hydrolyzed gelatin by boiling it with sulfuric acid. He originally called it "sugar of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ABO Gene
Histo-blood group ABO system transferase is an enzyme with glycosyltransferase activity, which is encoded by the ''ABO'' gene in humans. It is ubiquitously expressed in many tissues and cell types. ABO determines the ABO blood group of an individual by modifying the oligosaccharides on cell surface glycoproteins. Variations in the sequence of the protein between individuals determine the type of modification and the blood group. The ''ABO'' gene also contains one of 27 SNPs associated with increased risk of coronary artery disease. Alleles The ''ABO'' gene resides on chromosome 9 at the band 9q34.2 and contains 7 exons. The ''ABO'' locus encodes three alleles, that is, 3 variants of the same gene. One allele is derived from each parent. The A allele produces α-1,3-N-acetylgalactosamine transferase (A-transferase), which catalyzes the transfer of GalNAc residues from the UDP-GalNAc donor nucleotide to the Gal residues of the acceptor H antigen, converting the H antigen into ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nucleotide
Nucleotides are Organic compound, organic molecules composed of a nitrogenous base, a pentose sugar and a phosphate. They serve as monomeric units of the nucleic acid polymers – deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), both of which are essential biomolecules within all Life, life-forms on Earth. Nucleotides are obtained in the diet and are also synthesized from common Nutrient, nutrients by the liver. Nucleotides are composed of three subunit molecules: a nucleobase, a pentose, five-carbon sugar (ribose or deoxyribose), and a phosphate group consisting of one to three phosphates. The four nucleobases in DNA are guanine, adenine, cytosine, and thymine; in RNA, uracil is used in place of thymine. Nucleotides also play a central role in metabolism at a fundamental, cellular level. They provide chemical energy—in the form of the nucleoside triphosphates, adenosine triphosphate (ATP), guanosine triphosphate (GTP), cytidine triphosphate (CTP), and uridine triph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
