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Octamer Transcription Factor
Octamer transcription factors are a family of transcription factors which binds to the "ATTTGCAT" DNA sequence. Their DNA-binding domain is a POU domain. There are eight Octamer proteins in humans (Oct1–11),Oct-5 and Oct-10 are not found in humans, while Oct-3 and Oct-4 were identified as the same protein. which have been renamed according to the different classes of POU domain. Octamer-3/4, also known as POU5F1, is one of the Yamanaka factors, which are critical for the maintenance and self-renewal of embryonic stem cells. On the other hand, Oct-1 and Oct-2 are widely expressed in adult tissues. Oct-7, 8 and 9, also known as "brain factors", are predominantly expressed in the central nervous system during embryonic development. Oct-6 expression is confined to embryonic stem cells and the developing nervous system and skin, while Oct-11 is also involved in skin differentiation. Human Oct proteins * Oct-1 - * Oct-2 Oct-2 (octamer-binding protein 2) also known as POU domain, c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protein Family
A protein family is a group of evolutionarily related proteins. In many cases, a protein family has a corresponding gene family, in which each gene encodes a corresponding protein with a 1:1 relationship. The term "protein family" should not be confused with Family (biology), family as it is used in taxonomy. Proteins in a family descend from a common ancestor and typically have similar protein structure, three-dimensional structures, functions, and significant Sequence homology, sequence similarity. The most important of these is sequence similarity (usually amino-acid sequence), since it is the strictest indicator of homology and therefore the clearest indicator of common ancestry. A fairly well developed framework exists for evaluating the significance of similarity between a group of sequences using sequence alignment methods. Proteins that do not share a common ancestor are very unlikely to show statistically significant sequence similarity, making sequence alignment a powerf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oct-1
POU domain, class 2, transcription factor 1 is a protein that in humans is encoded by the ''POU2F1'' gene. Interactions POU2F1 has been shown to interact with: * EPRS, * Glucocorticoid receptor, * Glyceraldehyde 3-phosphate dehydrogenase, * Host cell factor C1, * Ku80, * MNAT1 * NPAT, * Nuclear receptor co-repressor 2, * POU2AF1, * RELA, * Retinoid X receptor alpha, * SNAPC4, * Sp1 transcription factor, and * TATA binding protein. See also * Octamer transcription factor Octamer transcription factors are a family of transcription factors which binds to the "ATTTGCAT" DNA sequence. Their DNA-binding domain is a POU domain. There are eight Octamer proteins in humans (Oct1–11),Oct-5 and Oct-10 are not found in huma ... References Further reading * * * * * * * * * * * * * * * * * * External links * {{Transcription factors, g3 POU-domain proteins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
POU2F3
POU domain, class 2, transcription factor 3 is a protein that in humans is encoded by the ''POU2F3'' gene In biology, the word gene (from , ; "...Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity..." meaning ''generation'' or ''birth'' or ''gender'') can have several different meanings. The Mendelian gene is a ba .... References Further reading * * * * * * * * * * {{gene-11-stub POU-domain proteins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
POU3F3
POU class 3 homeobox 3 is a protein that in humans is encoded by the POU3F3 gene In biology, the word gene (from , ; "...Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity..." meaning ''generation'' or ''birth'' or ''gender'') can have several different meanings. The Mendelian gene is a ba .... Function This gene encodes a POU-domain containing protein that functions as a transcription factor. The encoded protein recognizes an octamer sequence in the DNA of target genes. This protein may play a role in development of the nervous system. rovided by RefSeq, Apr 2015 References Further reading * * {{NLM content ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
POU3F2
POU domain, class 3, transcription factor 2 is a protein that in humans is encoded by the ''POU3F2'' gene. Function N-Oct-3 is a protein belonging to a large family of transcription factors that bind to the octameric DNA sequence ATGCAAAT. Most of these proteins share a highly homologous region, referred to as the POU domain, which occurs in several mammalian transcription factors, including the octamer-binding proteins Oct1 (POU2F1; MIM 164175) and Oct2 (POU2F2; MIM 164176), and the pituitary protein Pit1 (PIT1; MIM 173110). Class III POU genes are expressed predominantly in the CNS. It is likely that CNS-specific transcription factors such as these play an important role in mammalian neurogenesis by regulating their diverse patterns of gene expression. Disease linkage The POU3F2 protein associates with the Bipolar disorder. It is involved in the neocortex development in mice, and is linked to a single nucleotide polymorphism, Rs1906252, that is associated with a cognitive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
POU3F1
POU domain, class 3, transcription factor 1 (also known as Oct-6) is a protein that in humans is encoded by the ''POU3F1'' gene. See also * Octamer transcription factor Octamer transcription factors are a family of transcription factors which binds to the "ATTTGCAT" DNA sequence. Their DNA-binding domain is a POU domain. There are eight Octamer proteins in humans (Oct1–11),Oct-5 and Oct-10 are not found in huma ... References Further reading * * * * * * * * * * * * * * External links * POU-domain proteins {{gene-1-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oct-4
Oct-4 (octamer-binding transcription factor 4), also known as POU5F1 (POU domain, class 5, transcription factor 1), is a protein that in humans is encoded by the ''POU5F1'' gene. Oct-4 is a homeodomain transcription factor of the POU family. It is critically involved in the self-renewal of undifferentiated embryonic stem cells. As such, it is frequently used as a marker for undifferentiated cells. Oct-4 expression must be closely regulated; too much or too little will cause differentiation of the cells. Octamer-binding transcription factor 4, OCT-4, is a transcription factor protein that is encoded by the ''POU5F1'' gene and is part of the POU (Pit-Oct-Unc) family. OCT-4 consists of an octamer motif, a particular DNA sequence of AGTCAAAT that binds to their target genes and activates or deactivates certain expressions. These gene expressions then lead to phenotypic changes in stem cell differentiation during the development of a mammalian embryo. It plays a vital role in det ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oct-2
Oct-2 (octamer-binding protein 2) also known as POU domain, class 2, transcription factor 2 is a protein that in humans is encoded by the POU2F2 gene. Oct-2 is an octamer transcription factor which is a member of the POU family POU or pou may refer to: People * Pou (surname), a surname * Chu Pou (303–350), Chinese general and politician * Pou Temara (born 1948), New Zealand Māori academic Codes * POU, IATA airport code and FAA location identifier for Hudson Valley R .... References External links * * POU-domain proteins {{biochemistry-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embryonic Development
An embryo is an initial stage of development of a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male sperm cell. The resulting fusion of these two cells produces a single-celled zygote that undergoes many cell divisions that produce cells known as blastomeres. The blastomeres are arranged as a solid ball that when reaching a certain size, called a morula, takes in fluid to create a cavity called a blastocoel. The structure is then termed a blastula, or a blastocyst in mammals. The mammalian blastocyst hatches before implantating into the endometrial lining of the womb. Once implanted the embryo will continue its development through the next stages of gastrulation, neurulation, and organogenesis. Gastrulation is the formation of the three germ layers that will form all of the different parts of the body. Neurulation forms the nervous syst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transcription Factor
In molecular biology, a transcription factor (TF) (or sequence-specific DNA-binding factor) is a protein that controls the rate of transcription of genetic information from DNA to messenger RNA, by binding to a specific DNA sequence. The function of TFs is to regulate—turn on and off—genes in order to make sure that they are expressed in the desired cells at the right time and in the right amount throughout the life of the cell and the organism. Groups of TFs function in a coordinated fashion to direct cell division, cell growth, and cell death throughout life; cell migration and organization (body plan) during embryonic development; and intermittently in response to signals from outside the cell, such as a hormone. There are up to 1600 TFs in the human genome. Transcription factors are members of the proteome as well as regulome. TFs work alone or with other proteins in a complex, by promoting (as an activator), or blocking (as a repressor) the recruitment of RNA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Nervous System
The central nervous system (CNS) is the part of the nervous system consisting primarily of the brain and spinal cord. The CNS is so named because the brain integrates the received information and coordinates and influences the activity of all parts of the bodies of bilaterally symmetric and triploblastic animals—that is, all multicellular animals except sponges and diploblasts. It is a structure composed of nervous tissue positioned along the rostral (nose end) to caudal (tail end) axis of the body and may have an enlarged section at the rostral end which is a brain. Only arthropods, cephalopods and vertebrates have a true brain (precursor structures exist in onychophorans, gastropods and lancelets). The rest of this article exclusively discusses the vertebrate central nervous system, which is radically distinct from all other animals. Overview In vertebrates, the brain and spinal cord are both enclosed in the meninges. The meninges provide a barrier to chemicals dissolv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embryonic Stem Cells
Embryonic stem cells (ESCs) are pluripotent stem cells derived from the inner cell mass of a blastocyst, an early-stage pre- implantation embryo. Human embryos reach the blastocyst stage 4–5 days post fertilization, at which time they consist of 50–150 cells. Isolating the inner cell mass (embryoblast) using immunosurgery results in destruction of the blastocyst, a process which raises ethical issues, including whether or not embryos at the pre-implantation stage have the same moral considerations as embryos in the post-implantation stage of development. Researchers are currently focusing heavily on the therapeutic potential of embryonic stem cells, with clinical use being the goal for many laboratories. Potential uses include the treatment of diabetes and heart disease. The cells are being studied to be used as clinical therapies, models of genetic disorders, and cellular/DNA repair. However, adverse effects in the research and clinical processes such as tumors and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
