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Coronin
Coronin is an actin binding protein which also interacts with microtubules and in some cell types is associated with phagocytosis. Coronin proteins are expressed in a large number of eukaryotic organisms from yeast to humans. Discovery Initially, a 55 kDa protein was isolated from the actomyosin complex of '' Dictyostelium discoideum'', which was later shown to bind actin in vitro. This actin binding protein was named coronin after its strong immunolocalisation in the actin rich crown like extension of the cell cortex in ''D. discoideum''. Initially this protein was admitted into club of actin binding proteins with least enthusiasm, as the primary structure did not match any other ABPs. But null mutation of coronin in ''D. discoideum'' resulted in impaired cytokinesis, and many actin mediated processes like endocytosis, cell motility etc. Later on, the protein was identified in many eukaryotic cells. Structure Coronin belongs to the WD-repeat containing proteins, which form a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CORO1A
Coronin-1A is a protein that in humans is encoded by the ''CORO1A'' gene. It has been implicated in both T-cell mediated immunity and mitochondrial apoptosis Apoptosis (from grc, ἀπόπτωσις, apóptōsis, 'falling off') is a form of programmed cell death that occurs in multicellular organisms. Biochemical events lead to characteristic cell changes (morphology) and death. These changes incl .... In a recent genome-wide longevity study, its expression levels were found to be negatively associated both with age at the time of blood sample and the survival time after blood draw. Discovery The coronin protein family was discovered in 1991 by Eugenio L. Hostos. Hostos used a cytoskeletal preparation called the “contracted propeller” that efficiently helped with the purification of cytoskeletal proteins. This technique allowed him to precipitate actomyosin components together with the desired proteins. These protein were named Corona, which is the Latin word for c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CORO1B
Coronin, actin binding protein, 1B also known as CORO1B is a protein which in humans is encoded by the ''CORO1B'' gene. Members of the coronin family, such as CORO1B, are WD repeat-containing actin-binding proteins that regulate cell motility Motility is the ability of an organism to move independently, using metabolic energy. Definitions Motility, the ability of an organism to move independently, using metabolic energy, can be contrasted with sessility, the state of organisms th .... Function A mammalian coronin enriches at the leading edge of migrating cells. Studies related to this protein are as follows: * Coronin 1B antagonizes cortactin and remodels Arp2/3-containing actin branches in lamellipodia. * F-actin binding is essential for coronin 1B function in vivo. * Coronin 1B coordinates Arp2/3 complex and cofilin activities at the leading edge. * Phosphorylation of coronin 1B by protein kinase C regulates interaction with Arp2/3 and cell motility. * In vivo and i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CORO1C
Coronin-1C is a protein that in humans is encoded by the ''CORO1C'' gene. This gene encodes a member of the WD repeat protein family. WD repeats are minimally conserved regions of approximately 40 amino acids typically bracketed by gly-his and trp-asp (GH-WD), which may facilitate formation of heterotrimeric or multiprotein complexes. Members of this family are involved in a variety of cellular processes, including cell cycle progression, signal transduction, apoptosis, and gene regulation. References External links * Further reading * * * * * * * * * * {{gene-12-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CORO6
Coronin-6 also known as coronin-like protein E (Clipin-E) is a protein that in humans is encoded by the CORO6 gene. Coronin-6 belongs to the coronin family which is an actin binding protein. Human CORO6 gene is located on chromosome 17 on the cytogenetic band 17 p11.2. Gene CORO6 is well conserved across domain of eukaryotic organisms from animal to fungi. Expression EST profile Based on the EST profile, CORO6 expressed in high level at the larynx, nerve and muscle. CORO6 has also been shown to be expressed in high levels in the breast (mammary gland) tumor. During the human development stage, the higher level of CORO6 expressed at blastocyst and adult. Transcript Variant Alternative mRNAs are shown aligned from 5' to 3' on a virtual genome where introns have been shrunk to a minimal length. Exon size is proportional to length, intron height reflects the number of cDNAs supporting each intron. Introns of the same color are identical, of different colors are different. 'Goo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CORO2A
Coronin, actin binding protein, 2A is a protein that in humans is encoded by the CORO2A gene. This gene encodes a member of the WD repeat The WD40 repeat (also known as the WD or beta-transducin repeat) is a short structural motif of approximately 40 amino acids, often terminating in a tryptophan- aspartic acid (W-D) dipeptide. Tandem copies of these repeats typically fold toget ... protein family. WD repeats are minimally conserved regions of approximately 40 amino acids typically bracketed by gly-his and trp-asp (GH-WD), which may facilitate formation of heterotrimeric or multiprotein complexes. Members of this family are involved in a variety of cellular processes, including cell cycle progression, signal transduction, apoptosis, and gene regulation. This protein contains 5 WD repeats, and has a structural similarity with actin-binding proteins: the D. discoideum coronin and the human p57 protein, suggesting that this protein may also be an actin-binding protein that regu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actin
Actin is a family of globular multi-functional proteins that form microfilaments in the cytoskeleton, and the thin filaments in muscle fibrils. It is found in essentially all eukaryotic cells, where it may be present at a concentration of over 100 μM; its mass is roughly 42 kDa, with a diameter of 4 to 7 nm. An actin protein is the monomeric subunit of two types of filaments in cells: microfilaments, one of the three major components of the cytoskeleton, and thin filaments, part of the contractile apparatus in muscle cells. It can be present as either a free monomer called G-actin (globular) or as part of a linear polymer microfilament called F-actin (filamentous), both of which are essential for such important cellular functions as the mobility and contraction of cells during cell division. Actin participates in many important cellular processes, including muscle contraction, cell motility, cell division and cytokinesis, vesicle and organelle movement, cell sign ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aspartic Acid
Aspartic acid (symbol Asp or D; the ionic form is known as aspartate), is an α-amino acid that is used in the biosynthesis of proteins. Like all other amino acids, it contains an amino group and a carboxylic acid. Its α-amino group is in the protonated –NH form under physiological conditions, while its α-carboxylic acid group is deprotonated −COO− under physiological conditions. Aspartic acid has an acidic side chain (CH2COOH) which reacts with other amino acids, enzymes and proteins in the body. Under physiological conditions (pH 7.4) in proteins the side chain usually occurs as the negatively charged aspartate form, −COO−. It is a non-essential amino acid in humans, meaning the body can synthesize it as needed. It is encoded by the codons GAU and GAC. D-Aspartate is one of two D-amino acids commonly found in mammals. .html" ;"title="/sup>">/sup> In proteins aspartate sidechains are often hydrogen bonded to form asx turns or asx motifs, which frequently occur at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CORO2B
Coro or CORO may refer to: Entertainment * ''Coro'' (Berio), a composition by Luciano Berio * Coro (music), Italian for choir * Coro TV, Venezuelan community television channel * Omweso (Coro), mancala game played in the Lango region of Uganda * Coro, The Sixteen's record label People * Coro (footballer), Spanish footballer * Coro (singer), Dominican singer and actor Places * Coro Coro Municipality * Coro Gulf * Coro Province, historic province of Gran Colombia * Coro region, a geographical region of Venezuela * Coro, Venezuela, the capital city of Falcón State Other * Coro (non-profit organization) Coro is an American non-partisan, non-profit organization best known for its fellowship program dedicated to teaching skills useful in leadership in public affairs to young adults. The organization was founded in San Francisco in 1942 by W. Do ..., teaches leadership skills to young adults * Corocraft, costume jewelry makers of the early 20th century {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cytoskeleton
The cytoskeleton is a complex, dynamic network of interlinking protein filaments present in the cytoplasm of all cells, including those of bacteria and archaea. In eukaryotes, it extends from the cell nucleus to the cell membrane and is composed of similar proteins in the various organisms. It is composed of three main components, microfilaments, intermediate filaments and microtubules, and these are all capable of rapid growth or disassembly dependent on the cell's requirements. A multitude of functions can be performed by the cytoskeleton. Its primary function is to give the cell its shape and mechanical resistance to deformation, and through association with extracellular connective tissue and other cells it stabilizes entire tissues. The cytoskeleton can also contract, thereby deforming the cell and the cell's environment and allowing cells to migrate. Moreover, it is involved in many cell signaling pathways and in the uptake of extracellular material ( endocytosis), the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drosophila
''Drosophila'' () is a genus of flies, belonging to the family Drosophilidae, whose members are often called "small fruit flies" or (less frequently) pomace flies, vinegar flies, or wine flies, a reference to the characteristic of many species to linger around overripe or rotting fruit. They should not be confused with the Tephritidae, a related family, which are also called fruit flies (sometimes referred to as "true fruit flies"); tephritids feed primarily on unripe or ripe fruit, with many species being regarded as destructive agricultural pests, especially the Mediterranean fruit fly. One species of ''Drosophila'' in particular, ''D. melanogaster'', has been heavily used in research in genetics and is a common model organism in developmental biology. The terms "fruit fly" and "''Drosophila''" are often used synonymously with ''D. melanogaster'' in modern biological literature. The entire genus, however, contains more than 1,500 species and is very diverse in appearance, be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tryptophan
Tryptophan (symbol Trp or W) is an α-amino acid that is used in the biosynthesis of proteins. Tryptophan contains an α-amino group, an α- carboxylic acid group, and a side chain indole, making it a polar molecule with a non-polar aromatic beta carbon substituent. It is essential in humans, meaning that the body cannot synthesize it and it must be obtained from the diet. Tryptophan is also a precursor to the neurotransmitter serotonin, the hormone melatonin, and vitamin B3. It is encoded by the codon UGG. Like other amino acids, tryptophan is a zwitterion at physiological pH where the amino group is protonated (–; pKa = 9.39) and the carboxylic acid is deprotonated ( –COO−; pKa = 2.38). Humans and many animals cannot synthesize tryptophan: they need to obtain it through their diet, making it an essential amino acid. Function Amino acids, including tryptophan, are used as building blocks in protein biosynthesis, and proteins are required to sustain life. Man ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microtubule
Microtubules are polymers of tubulin that form part of the cytoskeleton and provide structure and shape to eukaryotic cells. Microtubules can be as long as 50 micrometres, as wide as 23 to 27 nm and have an inner diameter between 11 and 15 nm. They are formed by the polymerization of a dimer of two globular proteins, alpha and beta tubulin into protofilaments that can then associate laterally to form a hollow tube, the microtubule. The most common form of a microtubule consists of 13 protofilaments in the tubular arrangement. Microtubules play an important role in a number of cellular processes. They are involved in maintaining the structure of the cell and, together with microfilaments and intermediate filaments, they form the cytoskeleton. They also make up the internal structure of cilia and flagella. They provide platforms for intracellular transport and are involved in a variety of cellular processes, including the movement of secretory vesicles, organell ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
