622 Results for: "Biosensis"

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Fluoro-Jade stain is a fluorochrome derived from fluorescein, and is commonly used in neuroscience disciplines to label degenerating neurons in ex vivo tissue of the central nervous system.

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Anti-MCHERRY Mouse T4 Antibody [clone: 1C51]

Supplier: Biosensis

HQ-O Ready-To-Dilute (RTD) Stain Reagent is designed to label amyloid plaques in paraffin-embedded or freshly cut frozen tissue sections. As a fluorescent zinc chelator, HQ-O is unique as it takes advantage of the known presence of concentrated zinc in amyloid plaques. Studies with HQ-O revealed that fluorescent plaque-like structures are only seen when synthetic Aβx-42 is aggregated in the presence of zinc. Under blue light excitation, plaque structures appear bright green fluorescent in the brain parenchyma, correlating closely with plaque structures observed following Aβ antibody staining.

Supplier: Biosensis

The Biosensis NGFR/p75^ECD Rapid™ enzyme-linked immunosorbent assay (ELISA) kit is a sandwich ELISA that allows the quantification of the extracellular domain (ECD) of human p75 neurotrophin receptor in less than four hours in urine only if used as directed.

Supplier: Biosensis

X63-saporin is an antibody conjugate comprising of the non-specific monoclonal IgG1 antibody X63, chemically conjugated via a reducible disulfide bridge to the ribosome-inactivating protein saporin, purified from saponaria officinalis. Antibody clone X63 has no known binding ability, and thus can be used as negative control antibody. In combination with saporin, X63-saporin is a useful negative control for targeting IgG1-saporin conjugates such as MC192-saporin.

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Amylo-Glo RTD reagent is designed to stain amyloid plaques in tissue sections.

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Fibrillarin is part of the small subunit processome complex, involved in the processing of pre-18S ribosomal RNA. Nop1p is the yeast homologue of fibrillarin. Fibrillarin/Nop1p is extraordinarily conserved, so that the yeast and human proteins are 67% identical, and the human protein can functionally replace the yeast protein. This means that suitably cross-reactive antibodies to Nop1p/fibrillarin such as this antibody can be used to reveal nucleoli and study fibrillarin/Nop1p in all eukaryotes and archea tested to date. This antibody is becoming widely used as a convenient marker for nucleoli in a wide variety of species.

Supplier: Biosensis

Casein kinases are operationally defined by their preferential utilization of acidic proteins such as caseins as substrates. It can phosphorylate a large number of proteins. Participates in Wnt signaling. Phosphorylates CTNNB1 at 'Ser-45'. May phosphorylate PER1 and PER2. May play a role in segregating chromosomes during mitosis. May play a role in keratin cytoskeleton disassembly and thereby, it may regulate epithelial cell migration. (Reference: uniprot.org)

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mCherry is an engineered derivative of one of a family of proteins originally isolated from Cnidarians (jelly fish, sea anemones and corals). The mCherry protein was derived from DsRed, a red fluorescent protein from so-called disc corals of the genus Discosoma. DsRed is a 223 amino acid ~28kDa protein similar in size and properties to GFP, but, obviously, produces a red rather than a green fluorochrome. The original DsRed was engineered extensively in the Tsien lab to prevent it from forming tetramers and dimers and to modify and improve the spectral properties (1-3). The resulting monomeric protein is useful for applications such as Förster Resonance Energy Transfer (FRET, also known as Fluorescence Resonance Energy Transfer). Several further cycles of mutation, directed modification and evolutionary selection produced mCherry, which is monomeric and has an excitation maximum at 587 nm and and emission maximum at 610 nm (4).

Supplier: Biosensis

FUNCTION: Promotes microtubule assembly and stability, and might be involved in the establishment and maintenance of neuronal polarity. The C-terminus binds axonal microtubules while the N-terminus binds neural plasma membrane components, suggesting that tau functions as a linker protein between both. Axonal polarity is predetermined by tau localization (in the neuronal cell) in the domain of the cell body defined by the centrosome. The short isoforms allow plasticity of the cytoskeleton whereas the longer isoforms may preferentially play a role in its stabilization. SUBCELLULAR LOCATION: Cytoplasm; cytosol. Cell membrane. Mostly found in the axons of neurons, in the cytosol and in association with plasma membrane components. ALTERNATIVE PRODUCTS: 8 named isoforms produced by alternative splicing. Additional isoforms seem to exist. Isoforms differ from each other by the presence or absence of up to 5 of the 15 exons. One of these optional exons contains the additional tau/MAP repeat. TISSUE SPECIFICITY: Expressed in neurons. Isoform PNS-tau is expressed in the peripheral nervous system while the others are expressed in the central nervous system. DEVELOPMENTAL STAGE: Four-repeat (type II) tau is expressed in an adult-specific manner and is not found in fetal brain, whereas three-repeat (type I) tau is found in both adult and fetal brain. DOMAIN: The tau/MAP repeat binds to tubulin. In Alzheimer disease, the neuronal cytoskeleton in the brain is progressively disrupted and replaced by tangles of paired helical filaments and straight filaments, mainly composed of hyperphosphorylated forms of Microtubule-associated protein Tau. Defects in Microtubule-associated protein Tau are a cause of frontotemporal dementia and parkinsonism linked to chromosome 17, as well as a number of other neurodegenerative diseases.

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FUNCTION: This is a specific receptor for parathyroid hormone. The activity of this receptor is mediated by g proteins which activate adenylyl cyclase. PTHR2 may be responsible for PTH effects in a number of physiological systems. It may play a significant role in pancreatic function. PTHR2 presence in neurons indicates that it may function as a neurotransmitter receptor. SUBUNIT: Binds to TIPF39/TIP39. SUBCELLULAR LOCATION: Membrane; multi-pass membrane protein. TISSUE SPECIFICITY: Abundantly expressed in brain, arterial and cardiac endothelium. Found as well in sperm, in the head of the epididymis. Lower expression is found in vascular smooth muscle, exocrine pancreas, testis and placenta. SIMILARITY: Belongs to the G-protein coupled receptor 2 family.

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The neural adhesion molecule Contactin-6, also known as NB-3, is a contactin/F3 subgroup member of immunoglobulin superfamily. It is expressed exclusively in the nervous system and mainly upregulated at the early postnatal stage during mouse brain development. Employing Northern blot analysis Kamei et al found that amongst different regions of the adult human nervous system cerebellum expressed highest level of NB-3 mRNA. The expression of NB-3 in the cerebellum increases until adulthood. In contrast, the expression in the cerebrum declines to a low level after postnatal day 7. NB-3 like other neural recognition molecules plays a vitally important role in axonal guidance during development, plasticity, and maintenance of synaptic connections in the adult brain. Cui et al recently showed that NB-3 acts as a novel Notch ligand to participate in oligodendrocyte generation. Furthermore, NB-3 triggers nuclear translocation of the Notch intracellular domain and promotes oligodendrogliogenesis from progenitor cells and differentiation of oligodendrocyte precursor cells via Deltex1. In primary oligodendrocytes, NB-3 increases myelin-associated glycoprotein transcripts. Hence, the NB-3/Notch signaling pathway may be worthwhile a closer examination for its potential for the treatment of demyelinating diseases. Human NB-3 shares with rat NB-3 86% identity in nucleotide sequences and 90% identity in amino acid sequences. FUNCTION: Contactins mediate cell surface interactions during nervous system development. Participates in oligodendrocytes generation by acting as a ligand of NOTCH1. Its association with NOTCH1 promotes NOTCH1 activation through the released notch intracellular domain (NICD) and subsequent translocation to the nucleus. Involved in motor coordination. SUBCELLULAR LOCATION: Cell membrane; lipid-anchor; GPI-anchor. ALTERNATIVE PRODUCTS: 2 named isoforms produced by alternative splicing. TISSUE SPECIFICITY: Expressed in brain. In brain, it is preferentially expressed in the accessory olfactory bulb, layers II/III and V of the cerebral cortex, piriform cortex, anterior thalamic nuclei, locus coeruleus of the pons and mesencephalic trigeminal nucleus and in Purkinje cells of the cerebellum. DEVELOPMENTAL STAGE: Highly expressed after birth, reaching a maximum at the postnatal day 7, and declines thereafter in the cerebrum, whereas it increases in the cerebellum to adulthood.

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Nerve growth factor receptor (NGFR) is also referred to as p75(NTR) due to its molecular mass and its ability to bind at low affinity not only NGF (see 162030), but also other neurotrophins, including brain-derived neurotrophic factor (BDNF; 113505), neurotrophin-3 (NTF3; 162660), and neurotrophin-4/5 (NTF5; 162662). At the time of its discovery, NGFR was considered a unique type of protein. Subsequently, however, a large superfamily of tumor necrosis factor receptors were found to share the overall structure of NGFR (4 extracellular ligand-binding, cysteine-rich repeats, or CRs, and signaling through association with, or disassociation from, cytoplasmic interactors). The identification of this superfamily helped elucidate some of the biologic functions of NGFR, including its ultimate involvement in the nuclear factor kappa-B (NFKB; see 164011) and apoptosis pathways. As a monomer, NGFR binds NGF with low affinity. Higher affinity binding is achieved by association with higher molecular mass, low-affinity neurotrophin receptors, namely the tropomyosin receptor kinases, TRKA (NTRK1; 191315), TRKB (NTRK2; 600456), and TRKC (NTRK3; 191316). TRKA, TRKB, and TRKC are specific for or 'preferred by' NGF, NTF5 and BDNF, and NTF3, respectively (Ip et al., 1993). NTF3 also binds to TRKA and TRKB, but with significantly lower affinity

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Glutathione peroxidase 4 (GPx-4) is involved in protecting cells against membrane lipid peroxidation and cell death.

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Transforming growth factor beta-1 (TGFB1) is a multi-functional cytokine with roles in proliferation, differentiation and other functions in many cell types. The secreted TGFB1 protein is cleaved into a latency-associated peptide (LAP) and a mature TGFB1 peptide (Ref: SWISS-Prot).

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The 6X His tag is a short peptide sequence of 6 histidine residues. Epitopes such as the 6X His tag are often included with the target DNA at the time of cloning to produce fusion proteins containing the tag sequence. This allows anti-epitope tag antibodies such as this one to serve as a universal detection reagent for any recombinant protein containing this tag. Anti-epitope antibodies are a useful alternative to generating antibodies to identify a specific recombinant protein. The 6X His motif is often used as a tag on recombinant proteins to facilitate purification with immobilized metal-affinity chromatography.

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AGRP is the endogenous antagonist of alpha-melanocyte stimulating hormone and has been shown to cause potent stimulation of food intake, and this protein is found in over 90% of Neuropeptide Y containing cells in rats.

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Alpha synuclein is an abundant 140 amino acid neuronal protein, expressed primarily at presynaptic terminals in the central nervous system. Alpha synuclein has been associated with several neurodegenerative diseases. A point mutation in the gene coding for the alpha-synuclein protein was the first discovery linking this protein to a rare familial form of Parkinson's disease (PD). Subsequently, other mutations in the alpha-synuclein gene have been identified in familial PD. The aggregated proteinaceous inclusions called Lewy bodies found in PD and cortical Lewy body dementia (LBD) were discovered to be predominantly alpha-synuclein. Aberrant aggregation of alpha-synuclein has been detected in an increasing number of neurodegenerative diseases, collectively known as synucleopathies. Alpha-synuclein exists physiologically in both soluble and membrane-bound states, in unstructured and alpha-helical conformations, respectively. The physiological function of alpha-synuclein appears to require its translocation between these subcellular compartments and interconversion between the 2 conformations. Abnormal processing of alpha-synuclein is predicted to lead to pathological changes in its binding properties and function.

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Catenin beta is an adherens junction protein and has a role in the regulation of cell adhesion and in signal transduction through the Wnt pathway. At least 2 isoforms are produced by alternative splicing.

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Neurofilaments contain three intermediate filament proteins: light (68 kDa), medium (160 kDa) and heavy (200 kDa). Neurofilament heavy (NF200 or NF-H) is phosphorylated and it is thought that this results in the formation of interfilament cross bridges that are important in the maintenance of axonal caliber.

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FUNCTION: Required for autophagy. Conjugates to ATG12 and associates with isolation membrane to form cup-shaped isolation membrane and autophagosome. The conjugate detaches from the membrane immediately before or after autophagosome formation is completed. FUNCTION: May play an important role in the apoptotic process, possibly within the modified cytoskeleton. Its expression is a relatively late event in the apoptotic process, occurring downstream of caspase activity. SUBCELLULAR LOCATION: Cytoplasm. Colocalizes with nonmuscle actin. ALTERNATIVE PRODUCTS: 2 named isoforms produced by alternative splicing. TISSUE SPECIFICITY: Ubiquitous. The mRNA is present at similar levels in viable and apoptotic cells, whereas the protein is dramatically highly expressed in apoptotic cells. INDUCTION: By apoptotic stimuli. PTM: Conjugated to ATG12; which is essential for autophagy, but is not required for association with isolation membrane. SIMILARITY: Belongs to the ATG5 family.

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AUP1 contains a domain with homology to the ancient conserved region of the archain 1 gene and a domain thay may be involved in binding ubiquitin-conjugating enzymes.  The unprocessed precusor is of 476 amino acids in length and has an estimated molecular weight of 53 kDa. ALTERNATIVE PRODUCTS: 2 named isoforms produced by alternative splicing.TISSUE SPECIFICITY: Ubiquitous. SIMILARITY: Belongs to the AUP1 family. SIMILARITY: Contains 1 CUE domain.

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LRRK2 is a member of the leucine-rich repeat kinase family. It role is yet unknown but it may play a role in the phoshorylation of proteins central to parkinson diseases. LRRK2 contains an ankryin repeat region, a leucine-rich repeat (LRR) domain, a kinase domain, a DFG-like motif, a RAS domain, a GTPase domain, a MLK-like domain and a WD40 domain. LRRK2 is present in the cytoplasm but also associates with the mitochondrial outer membrane. Defects in LRRK2 are the cause of Parkinson disease 8 (PARK8). Parkinson disease is characterised by bradykinesia, resting tremor, muscular rigidity and postural instability, as well as by a clinically significant response to treatment with levodopa. The pathology involves the loss of dopaminergic neurons in the substantia nigra and the presence of Lewy bodies (intraneuronal accumulations of aggregated proteins), in surviving neurons in various areas of the brain. PARK8 is an autosomal-dominant late-onset parkinsonism, characterized by onset from 50 to 65 years, with slow progression and relatively benign course.

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Myristoylated alanine-rich C-kinase substrate (MARCKS) is the most prominent cellular substrate for protein kinase C. This protein binds calmodulin, actin, and synapsin. MARCKS is a filamentous (F) actin cross-linking protein. Ref: SWISSPROT.

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This enzyme is a thiol protease that recognizes and hydrolyzes a peptide bond at the C-terminal glycine of ubiquitin. The enzyme also binds to free monoubiquitin and may prevent its degradation in lysosomes (ref: SWISSPROT).

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Peptide YY (PYY) is secreted from endocrine cells in the lower small intestine, colon and pancreas. PYY inhibits exocrine pancreatic secretion, has a vasoconstrictory action and inhibitis jejunal and colonic mobility (Ref: SWISS-Prot).

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FUNCTION: Subunit of clathrin-associated adaptor protein complex 1 that plays a role in protein sorting in the late-Golgi/trans-Golgi network (TGN) and/or endosomes. The AP complexes mediate both the recruitment of clathrin to membranes and the recognition of sorting signals within the cytosolic tails of transmembrane cargo molecules. SUBUNIT: Adaptor protein complex 1 (AP-1) is an heterotetramer composed of two large adaptins (gamma1/AP1G1 or gamma2/AP1G2 and beta1A/AP1B1 or beta1B/AP1B1), a medium adaptin (mu1A/AP1M1 or mu1B/AP1M2) and a small adaptin (sigma1A/AP1S1 or sigma1B/AP1S2 or sigma1C/AP1S3). SUBCELLULAR LOCATION: Golgi apparatus. Cytoplasmic vesicle; cytoplasmic vesicle membrane; peripheral membrane protein; cytoplasmic side. Note=Component of the coat surrounding the cytoplasmic face of coated vesicles located at the Golgi complex. ALTERNATIVE PRODUCTS: 2 named isoforms produced by alternative splicing. TISSUE SPECIFICITY: Widely expressed. DISEASE: Deletion of the AP1B1 gene may play a role in the tumorigenesis of meningiomas. SIMILARITY: Belongs to the adaptor complexes large subunit family.

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Microtubules are 25nm diameter protein rods found in most kinds of eukaryotic cells. They are polymerized from a dimeric subunit made of one 'a' subunit and one 'b' tubulin subunit. Microtubules are associated with a family of proteins called microtubule associated proteins (MAPs), which includes the protein t (tau) and a group of proteins referred to as MAP1, MAP2, MAP3, MAP4 and MAP5. MAP2 is made up of two ~280kDa apparent molecular weight bands referred to as MAP2 a and MAP2 b. A third lower molecular weight form, usually called MAP2c, corresponds to a pair of protein bands running at ~70kDa on SDS-PAGE gels. All these MAP2 forms are derived from a single gene by alternate transcription, and all share a C-terminal sequence which includes either three or four microtubule binding peptide sequences, which are very similar to those found in the related microtubule binding protein t (tau). MAP2 isoforms are expressed only in neuronal cells and specifically in the perikarya and dendrites of these cells. Antibodies to MAP2 are therefore excellent markers on neuronal cells, their perikarya and neuronal dendrites.

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Leu-Enkephalin is cleaved from the precursor Proenkephalin-A. Leu-Enkephalin is an endogenous opioid peptide that interacts with opioid receptors and produces analgesic effects.

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FUNCTION: Involved in redox regulation of the cell. Can reduce H(2)O(2) and short chain organic, fatty acid, and phospholipid hydroperoxides. May play a role in the regulation of phospholipid turnover as well as in protection against oxidative injury.  SUBUNIT: Homotetramer. SUBCELLULAR LOCATION: Cytoplasm. Lysosome. Also found in lung secretory organelles. MISCELLANEOUS: The active site is the redox-active Cys-47 oxidized to Cys-SOH. Cys-SOH may rapidly react with a Cys-SH of the other subunit to form an intermolecular disulfide with a concomitant homodimer formation. The enzyme may be subsequently regenerated by reduction of the disulfide by thioredoxin . MISCELLANEOUS: Irreversibly inactivated by overoxidation of Cys-47 (to Cys-SO(3)H) upon oxidative stress. SIMILARITY: Belongs to the ahpC/TSA family. Rehydrin subfamily.