|
Dynein
Dyneins are a family of cytoskeletal motor proteins (though they are actually protein complexes) that move along microtubules in cells. They convert the chemical energy stored in ATP to mechanical work. Dynein transports various cellular cargos, provides forces and displacements important in mitosis, and drives the beat of eukaryotic cilia and flagella. All of these functions rely on dynein's ability to move towards the minus-end of the microtubules, known as retrograde transport; thus, they are called "minus-end directed motors". In contrast, most kinesin motor proteins move toward the microtubules' plus-end, in what is called anterograde transport. Classification Dyneins can be divided into two groups: cytoplasmic dyneins and axonemal dyneins, which are also called ciliary or flagellar dyneins. * cytoplasmic ** heavy chain: DYNC1H1, DYNC2H1 ** intermediate chain: DYNC1I1, DYNC1I2 ** light intermediate chain: DYNC1LI1, DYNC1LI2, DYNC2LI1 ** light chain: DYNLL1, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Axonemal Dynein
Dyneins are a family of cytoskeletal motor proteins (though they are actually protein complexes) that move along microtubules in biological cell, cells. They convert the chemical energy stored in adenosine triphosphate, ATP to mechanical work. Dynein intracellular transport, transports various cellular cargos, provides forces and displacements important in mitosis, and drives the beat of eukaryotic cilia and flagella. All of these functions rely on dynein's ability to move towards the minus-end of the microtubules, known as Axonal transport#Retrograde transport, retrograde transport; thus, they are called "minus-end directed motors". In contrast, most kinesin motor proteins move toward the microtubules' plus-end, in what is called Axonal transport#Anterograde transport, anterograde transport. Classification Dyneins can be divided into two groups: cytoplasmic dyneins and axonemal dyneins, which are also called ciliary or flagellar dyneins. * cytoplasmic ** heavy chain: DYNC1H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DYNC1H1
Cytoplasmic dynein 1 heavy chain 1 is a protein that in humans is encoded by the ''DYNC1H1'' gene. Dynein is a molecular motor protein that is responsible for the transport of numerous cellular cargoes to minus ends of microtubules, which are typically found in the center of a cell, or the cell body of neurons. It is located on the 14th chromosome at position 14q32.31. Cytoplasmic dynein transports cargoes along the axon in the retrograde direction, bringing materials from the axon to the cell body. Dynein heavy chain binds microtubules and hydrolyzes ATP at its C-terminal head. It binds cargo via interaction with other dynein subunits at its N-terminal tail. Interactions DYNC1H1 has been shown to Protein-protein interaction, interact with a large variety of proteins that act as adaptors and regulators. The dynein motor protein complex itself is a large, 1.4 MDa multimeric complex composed of dimerized heavy chains, two intermediate chains, two light intermediate chains, and add ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DYNLL1
Dynein light chain 1, cytoplasmic is a protein that in humans is encoded by the ''DYNLL1'' gene. Function Cytoplasmic dyneins are large enzyme complexes with a molecular mass of about 1,200 kD. They contain two force-producing heads formed primarily from dynein heavy chains, and stalks linking the heads to a basal domain, which contains a varying number of accessory intermediate chains. The complex is involved in intracellular transport and motility. The protein described in this record is a light chain and exists as part of this complex but also physically interacts with and inhibits the activity of neuronal nitric oxide synthase. Binding of this protein destabilizes the neuronal nitric oxide synthase dimer, a conformation necessary for activity, and it may regulate numerous biologic processes through its effects on nitric oxide synthase activity. Alternate transcriptional splice variants have been characterized. Interactions DYNLL1 has been shown to interact with: * BCL ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DYNLT1
Dynein light chain Tctex-type 1 is a protein that in humans is encoded by the DYNLT1 gene. Cytoplasmic dynein is the major motor protein complex responsible for minus-end, microtubule-based motile processes. Each dynein complex consists of 2 heavy chains that have ATPase and motor activities, plus a group of accessory polypeptides. TCTEX1 is a dynein light chain involved in cargo binding (Chuang et al., 2005). upplied by OMIMref name="entrez" /> In cancer Cancer is a group of diseases involving Cell growth#Disorders, abnormal cell growth with the potential to Invasion (cancer), invade or Metastasis, spread to other parts of the body. These contrast with benign tumors, which do not spread. Po ... patients, DYNLT1 expression has been linked to both higher and lower survival rates, depending on cancer type. References Further reading * * * * * * * * * * * * * * * {{gene-6-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DYNC2H1
Cytoplasmic dynein 2 heavy chain 1 is a protein that in humans is encoded by the ''DYNC2H1'' gene. It is associated with Short rib-polydactyly syndrome type 3. It is also associated with Asphyxiating thoracic dysplasia. See also * dynein Dyneins are a family of cytoskeletal motor proteins (though they are actually protein complexes) that move along microtubules in cells. They convert the chemical energy stored in ATP to mechanical work. Dynein transports various cellular cargo ... References Further reading * * * * * * * * * * {{gene-11-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cilia
The cilium (: cilia; ; in Medieval Latin and in anatomy, ''cilium'') is a short hair-like membrane protrusion from many types of eukaryotic cell. (Cilia are absent in bacteria and archaea.) The cilium has the shape of a slender threadlike projection that extends from the surface of the much larger cell body. Eukaryotic flagella found on sperm cells and many protozoans have a similar structure to motile cilia that enables swimming through liquids; they are longer than cilia and have a different undulating motion. There are two major classes of cilia: ''motile'' and ''non-motile'' cilia, each with two subtypes, giving four types in all. A cell will typically have one primary cilium or many motile cilia. The structure of the cilium core, called the axoneme, determines the cilium class. Most motile cilia have a central pair of single microtubules surrounded by nine pairs of double microtubules called a 9+2 axoneme. Most non-motile cilia have a 9+0 axoneme that lacks the central pai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DNAH5
Dynein axonemal heavy chain 5 is a protein that in humans is encoded by the ''DNAH5'' gene. ''DNAH5'' is a protein-coding gene.1 It provides the instructions for synthesizing a protein that belongs to a microtubule-associated protein complex made of heavy, light and intermediate chains.2 ''DNAH5'' is responsible for making the heavy chain 5, found within the outer dynein arms of cilia.1 It will function as a force generating protein by using ATP, producing the power stroke for cilia.3 During early development, the cilia found on the primitive node will beat in a directional pattern, sending signaling molecules to the left, this process will begin to establish the internal left-right asymmetry.3 Mutations in ''DNAH5'' are linked to primary ciliary dyskinesia, an autosomal recessive disorder.4 This X-linked disorder is characterized by recurrent respiratory infections, infertility In biology, infertility is the inability of a male and female organism to Sexual reproduction, re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motor Protein
Motor proteins are a class of molecular motors that can move along the cytoskeleton of cells. They do this by converting chemical energy into mechanical work by the hydrolysis of ATP. Cellular functions Motor proteins are the driving force behind most active transport of proteins and vesicles in the cytoplasm. Kinesins and cytoplasmic dyneins play essential roles in intracellular transport such as axonal transport and in the formation of the spindle apparatus and the separation of the chromosomes during mitosis and meiosis. Axonemal dynein, found in cilia and flagella, is crucial to cell motility, for example in spermatozoa, and fluid transport, for example in trachea. The muscle protein myosin "motors" the contraction of muscle fibers in animals. Diseases associated with motor protein defects The importance of motor proteins in cells becomes evident when they fail to fulfill their function. For example, kinesin deficiencies have been identified as the cause for Cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DYNC1I1
Cytoplasmic dynein 1 intermediate chain 1 is a protein that in humans is encoded by the ''DYNC1I1'' gene In biology, the word gene has two meanings. The Mendelian gene is a basic unit of heredity. The molecular gene is a sequence of nucleotides in DNA that is transcribed to produce a functional RNA. There are two types of molecular genes: protei .... In melanocytic cells DYNC1I1 gene expression may be regulated by MITF. Interactions DYNC1I1 has been shown to interact with DYNLL1. References Further reading * * * * * * * * * * * * {{gene-7-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DYNLT3
Dynein, light chain, Tctex-type 3, also known as DYNLT3, is a protein which in humans is encoded by the ''DYNLT3'' gene. Function DYNLT3 is a member of the dynein motor protein family. DYNLT3 binds to BUB3, a spindle checkpoint protein is present on kinetochores at prometaphase. DYNLT3 can also function as a transcription regulator of Bcl-2 Bcl-2, encoded in humans by the ''BCL2'' gene, is the founding member of the Bcl-2 family of regulator proteins. BCL2 blocks programmed cell death (apoptosis) while other BCL2 family members can either inhibit or induce it. It was the first a ... gene through binding to SATB1 in a dynein-independent manner. Interactions DYNLT3 has been shown to interact with VDAC1. References Further reading * * * * * * * * * * {{gene-X-stub ... [...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 nanometer, nm and have an inner diameter between 11 and 15 nm. They are formed by the polymerization of a Protein dimer, dimer of two globular proteins, Tubulin#Eukaryotic, alpha and beta tubulin into #Structure, 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, in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DYNLL2
Dynein light chain 2, cytoplasmic is a protein that in humans is encoded by the ''DYNLL2'' gene. Interactions DYNLL2 has been shown to interact with DLG4, C12orf40, DLGAP1 Disks large-associated protein 1 (DAP-1), also known as guanylate kinase-associated protein (GKAP), is a protein that in humans is encoded by the ''DLGAP1'' gene In biology, the word gene has two meanings. The Mendelian gene is a basic unit ..., MYO5A and BMF. References Further reading * * * * * * Further reading * External links * {{gene-17-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
