Inter-alpha-trypsin Inhibitor

	Inter-alpha-trypsin Inhibitor Inter-alpha-trypsin inhibitors (IαI) are plasma proteins consisting of three of four heavy chains selected from the group ITIH1, ITIH2, ITIH3, ITIH4 and one light chain selected from the group Alpha-1-microglobulin/bikunin precursor, AMBP or SPINT2. They function as protease inhibitors. IαI form complexes with hyaluronan (HA), generating a serum-derived hyaluronan-associated protein (SHAP)-HA complex. The SHAP-HA complex is found in very high concentration in rheumatoid arthritic synovial fluid suggesting it has a role in the inflammatory response. References External links * Protease inhibitors Human proteins Arthritis {{protein-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Protein Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residues. Proteins perform a vast array of functions within organisms, including catalysing metabolic reactions, DNA replication, responding to stimuli, providing structure to cells and organisms, and transporting molecules from one location to another. Proteins differ from one another primarily in their sequence of amino acids, which is dictated by the nucleotide sequence of their genes, and which usually results in protein folding into a specific 3D structure that determines its activity. A linear chain of amino acid residues is called a polypeptide. A protein contains at least one long polypeptide. Short polypeptides, containing less than 20–30 residues, are rarely considered to be proteins and are commonly called peptides. The individual amino acid residues are bonded together by peptide bonds and adjacent amino acid residues. The sequence of amino acid residue ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	ITIH1 Inter-alpha-trypsin inhibitor heavy chain H1 is a protein that in humans is encoded by the ''ITIH1'' gene. See also * Inter-alpha-trypsin inhibitor * ITIH2 * ITIH3 * ITIH4 Inter-alpha-trypsin inhibitor heavy chain H4 is a protein that in humans is encoded by the ''ITIH4'' gene. See also * Inter-alpha-trypsin inhibitor * ITIH1 * ITIH2 * ITIH3 Inter-alpha-trypsin inhibitor heavy chain H3 is a protein that in humans ... References Further reading * * * * * * * * * * * * * * * * * * {{gene-3-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	ITIH2 Inter-alpha-trypsin inhibitor heavy chain H2 is a protein that in humans is encoded by the ''ITIH2'' gene. It is known to contain a Gla domain, and thus be dependent for production on post translational modification requiring vitamin K. Its function is also presumably dependent on calcium ions. See also * Inter-alpha-trypsin inhibitor * ITIH1 * ITIH3 * ITIH4 Inter-alpha-trypsin inhibitor heavy chain H4 is a protein that in humans is encoded by the ''ITIH4'' gene. See also * Inter-alpha-trypsin inhibitor * ITIH1 * ITIH2 * ITIH3 Inter-alpha-trypsin inhibitor heavy chain H3 is a protein that in humans ... References Further reading * * * * * * * * * * * * * * * * * * {{gene-10-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	ITIH3 Inter-alpha-trypsin inhibitor heavy chain H3 is a protein that in humans is encoded by the ''ITIH3'' gene. See also * Inter-alpha-trypsin inhibitor * ITIH1 * ITIH2 * ITIH4 Inter-alpha-trypsin inhibitor heavy chain H4 is a protein that in humans is encoded by the ''ITIH4'' gene. See also * Inter-alpha-trypsin inhibitor * ITIH1 * ITIH2 * ITIH3 Inter-alpha-trypsin inhibitor heavy chain H3 is a protein that in humans ... References Further reading * * * * * * * * * * * * * * * * * {{gene-3-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	ITIH4 Inter-alpha-trypsin inhibitor heavy chain H4 is a protein that in humans is encoded by the ''ITIH4'' gene. See also * Inter-alpha-trypsin inhibitor * ITIH1 * ITIH2 * ITIH3 Inter-alpha-trypsin inhibitor heavy chain H3 is a protein that in humans is encoded by the ''ITIH3'' gene. See also * Inter-alpha-trypsin inhibitor * ITIH1 * ITIH2 * ITIH4 Inter-alpha-trypsin inhibitor heavy chain H4 is a protein that in humans ... References Further reading * * * * * * * * * * * * * {{protein-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Alpha-1-microglobulin/bikunin Precursor Protein AMBP is a protein that in humans is encoded by the ''AMBP'' gene. Interactions Alpha-1-microglobulin/bikunin precursor has been shown to interact with CD79A. See also * Inter-alpha-trypsin inhibitor * Alpha-1-microglobulin References Further reading * * * * * * * * * * * * * * * * * * External links * The MEROPS MEROPS is an online database for peptidases (also known as proteases, proteinases and proteolytic enzymes) and their inhibitors. The classification scheme for peptidases was published by Rawlings & Barrett in 1993, and that for protein inhibitor ... online database for peptidases and their inhibitorsLI02-001 Precursor proteins Lipocalins {{gene-9-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	SPINT2 Kunitz-type protease inhibitor 2 is an enzyme inhibitor that in humans is encoded by the ''SPINT2'' gene. SPINT2 is a transmembrane protein with two extracellular Kunitz domains to inhibit serine proteases. This gene is a presumed tumor suppressor by inhibiting HGF activator which prevents the formation of active hepatocyte growth factor. 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, mi ...s in SPINT2 could result in congenital sodium diarrhea (CSD). References Further reading * * * * * * * * * * * * * * * * * External links * {{gene-19-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Protease A protease (also called a peptidase, proteinase, or proteolytic enzyme) is an enzyme that catalyzes (increases reaction rate or "speeds up") proteolysis, breaking down proteins into smaller polypeptides or single amino acids, and spurring the formation of new protein products. They do this by cleaving the peptide bonds within proteins by hydrolysis, a reaction where water breaks bonds. Proteases are involved in many biological functions, including digestion of ingested proteins, protein catabolism (breakdown of old proteins), and cell signaling. In the absence of functional accelerants, proteolysis would be very slow, taking hundreds of years. Proteases can be found in all forms of life and viruses. They have independently evolved multiple times, and different classes of protease can perform the same reaction by completely different catalytic mechanisms. Hierarchy of proteases Based on catalytic residue Proteases can be classified into seven broad groups: * Serine protease ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Hyaluronan Hyaluronic acid (; abbreviated HA; conjugate base hyaluronate), also called hyaluronan, is an anionic, nonsulfated glycosaminoglycan distributed widely throughout connective, epithelial, and neural tissues. It is unique among glycosaminoglycans as it is non-sulfated, forms in the plasma membrane instead of the Golgi apparatus, and can be very large: human synovial HA averages about 7 million Da per molecule, or about 20,000 disaccharide monomers, while other sources mention 3–4 million Da. The average 70 kg (150 lb) person has roughly 15 grams of hyaluronan in the body, one-third of which is turned over (i.e., degraded and synthesized) per day. As one of the chief components of the extracellular matrix, it contributes significantly to cell proliferation and migration, and is involved in the progression of many malignant tumors. Hyaluronic acid is also a component of the group A streptococcal extracellular capsule, and is believed to play a role in virule ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Synovial Fluid Synovial fluid, also called synovia, elp 1/sup> is a viscous, non-Newtonian fluid found in the cavities of synovial joints. With its egg white–like consistency, the principal role of synovial fluid is to reduce friction between the articular cartilage of synovial joints during movement. Synovial fluid is a small component of the transcellular fluid component of extracellular fluid. Structure The inner membrane of synovial joints is called the synovial membrane and secretes synovial fluid into the joint cavity. Synovial fluid is an ultrafiltrate from plasma, and contains proteins derived from the blood plasma and proteins that are produced by cells within the joint tissues. The fluid contains hyaluronan secreted by fibroblast-like cells in the synovial membrane, lubricin (proteoglycan 4; PRG4) secreted by the surface chondrocytes of the articular cartilage and interstitial fluid filtered from the blood plasma. This fluid forms a thin layer (roughly 50 μm) at the surface of c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Protease Inhibitors Protease inhibitors (PIs) are medications that act by interfering with enzymes that cleave proteins. Some of the most well known are antiviral drugs widely used to treat HIV/AIDS and hepatitis C. These protease inhibitors prevent viral replication by selectively binding to viral proteases (e.g. HIV-1 protease) and blocking proteolytic cleavage of protein precursors that are necessary for the production of infectious viral particles. Protease inhibitors that have been developed and are currently used in clinical practice include: * Antiretroviral HIV-1 protease inhibitors—class stem Amprenavir Atazanavir Darunavir Fosamprenavir Indinavir Lopinavir Nelfinavir Ritonavir Saquinavir Tipranavir * Hepatitis C virus NS3/ 4A protease inhibitors—class stem Asunaprevir Boceprevir Grazoprevir Glecaprevir Paritaprevir Simeprevir ** Telaprevir * Severe acute respiratory syndrome coronavirus 2 3-chymotrypsin-like protease inhibitors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Human Proteins Humans (''Homo sapiens'') are the most abundant and widespread species of primate, characterized by bipedalism and exceptional cognitive skills due to a large and complex brain. This has enabled the development of advanced tools, culture, and language. Humans are highly social and tend to live in complex social structures composed of many cooperating and competing groups, from families and kinship networks to political states. Social interactions between humans have established a wide variety of values, social norms, and rituals, which bolster human society. Its intelligence and its desire to understand and influence the environment and to explain and manipulate phenomena have motivated humanity's development of science, philosophy, mythology, religion, and other fields of study. Although some scientists equate the term ''humans'' with all members of the genus ''Homo'', in common usage, it generally refers to ''Homo sapiens'', the only extant member. Anatomically modern huma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]