You Searched For: Karl Klein Ventilatorenbau GmbH

Description: Defects in ATXN3 are the cause of spinocerebellar ataxia type 3 (SCA3) ; also known as Machado-Joseph disease (MJD). Spinocerebellar ataxia is a clinically and genetically heterogeneous group of cerebellar disorders. Patients show progressive incoordination of gait and often poor coordination of hands, speech and eye movements, due to degeneration of the cerebellum with variable involvement of the brainstem and spinal cord. SCA3 belongs to the autosomal dominant cerebellar ataxias type I (ADCA I) which are characterized by cerebellar ataxia in combination with additional clinical features like optic atrophy, ophthalmoplegia, bulbar and extrapyramidal signs, peripheral neuropathy and dementia. The molecular defect in SCA3 is the a CAG repeat expansion in ATXN3 coding region. Longer expansions result in earlier onset and more severe clinical manifestations of the disease.

Catalog Number: 10400-640

Supplier: Bioss

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Description: The very thin and soft bristles facilitate pastry applications, such as marinade, egg and icing.

Catalog Number: 76530-162

Supplier: Remco Products

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Description: Acura® manual 826 micropipettes designed with the research scientist in mind.

Catalog Number: 89209-934

Supplier: DWK Life Sciences (KIMBLE)

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Description: This eButler membrane filter dispenser rapidly dispenses a sterile disc of membrane while coiling the waste packaging for disposal when the refill pack is changed. The eButler for microbiology quality control testing enables more efficient workflow.

Catalog Number: 76423-828

Supplier: GE Healthcare - Whatman

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Description: Tools are designed to manually secure or release standard crimp seals to and from vials.

Catalog Number: 66064-362

Supplier: Thermo Scientific

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Description: For the VWR Signature* High-Speed Microplate Shakers (13500-890, 14216-214). Used to tighten knobs that hold the tray and microplates in place. Reduces stress on hands and wrists.

Catalog Number: 13501-914

Supplier: VWR International

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Description: PDGFs are disulfide-linked dimers consisting of two 12.0-13.5 kDa polypeptide chains, designated PDGF-A and PDGF-B chains. The three naturally occurring PDGFs, PDGF-AA, PDGF-BB and PDGF-AB, are potent mitogens for a variety of cell types, including smooth muscle cells, connective tissue cells, bone and cartilage cells, and some blood cells. The PDGFs are stored in platelet alpha-granules, and are released upon platelet activation. The PDGFs are involved in a number of biological processes, including hyperplasia, chemotaxis, embryonic neuron development, and respiratory tubule epithelial cell development. Two distinct signaling receptors used by PDGFs have been identified and named PDGFR-alpha and PDGFR-beta. PDGFR-alpha is a high-affinity receptor for each of the three PDGF forms. On the other hand, PDGFR-beta interacts with only PDGF-BB and PDGF-AB. Recombinant Human PDGF-AA is a 28.5 kDa disulfide-linked homodimer of two A chains (250 total amino acids).

Catalog Number: 76081-524

Supplier: PeproTech, Inc.

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Description: SMAD regulates gene expression by interacting with different classes of transcription factors including DNA-binding multi-zinc finger proteins. SIP1, for SMAD interacting protein 1, is a member of the delta-EF1/Zfh1 family of 2-handed zinc finger/homeodomain proteins. SIP1 contains a SMAD-binding domain, a homeodomain and two clusters of zinc fingers on the N- and C-termini. SIP1, also known as SMADIP1, ZFHX1B and ZEB2 (zinc finger E-box-binding protein 2), can be induced by TGF treatment. SIP1 plays a crucial role in normal embryonic development of neural structures and the neural crest. The human SIP1 gene maps to chromosome 2q22. Mutations in the SIP1 gene cause a form of Hirschsprung disease (HSCR). Patients with SIP1 mutations show mental retardation, delayed motor development, epilepsy, microcephaly, distinct facial features and/or congenital heart diseaseall symptoms of HSCR.

Catalog Number: 76107-560

Supplier: Bioss

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Description: Eukaryotic histones are basic and water-soluble nuclear proteins that form hetero-octameric nucleosome particles by wrapping 146 base pairs of DNA in a left-handed super-helical turn sequentially to form chromosomal fiber. Two molecules of each of the four core histones (H2A, H2B, H3, and H4) form the octamer; formed of two H2A-H2B dimers and two H3-H4 dimers, forming two nearly symmetrical halves by tertiary structure. Over 80% of nucleosomes contain the linker Histone H1, derived from an intronless gene that interacts with linker DNA between nucleosomes and mediates compaction into higher order chromatin. Histones are subject to posttranslational modification by enzymes primarily on their N-terminal tails, but also in their globular domains. Such modifications include methylation, citrullination, acetylation, phosphorylation, sumoylation, ubiquitination and ADP-ribosylation.

Catalog Number: 76194-092

Supplier: Prosci

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Description: PDGFs are disulfide-linked dimers consisting of two 12.0-13.5 kDa polypeptide chains, designated PDGF-A and PDGF-B chains. The three naturally occurring PDGFs; PDGF-AA, PDGF-BB and PDGF-AB, are potent mitogens for a variety of cell types including smooth muscle cells, connective tissue cells, bone and cartilage cells, and some blood cells. The PDGFs are stored in platelet α-granules and are released upon platelet activation. The PDGFs are involved in a number of biological processes, including hyperplasia, chemotaxis, embryonic neuron development, and respiratory tubule epithelial cell development. Two distinct signaling receptors used by PDGFs have been identified and named PDGFR-α and PDGFR-B. PDGFR-a is high-affinity receptor for each of the three PDGF forms. On the other hand, PDGFR-B interacts with only PDGF-BB and PDGF-AB. Recombinant human PDGF-AB is a 25.5 kDa disulfide-linked dimer, consisting of one A chain and one B chains (234 total amino acids).

Catalog Number: 10072-564

Supplier: Prosci

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Description: Non sterile RABS/Isolator gloves.

Catalog Number: 76316-257

Supplier: Ansell Healthcare

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Description: Glutamine Synthetase (GS) catalyzes the conversion of ammonia and glutamate to glutamine. This reaction consumes a molecule of ATP:Glutamate + NH4+ + ATP --> Glutamine + ADP + Pi. GS is found in astrocytes as an octamer of identical 45kDa subunits. The function of GS is the detoxification of brain ammonia. It also has an important role in controlling metabolic regulations of neurotransmitter glutamate. Because of the multiple functions and importance of GS in cellular metabolism, both catalytic activities and synthesis are highly regulated. The activity of GS is controlled by adenylylation. Its activity is decreased in the cerebral cortex of brains affected by Alzheimer s disease, particularly in the vicinity of senile plaques. It is also decreased under conditions of glucose deprivation. On the other hands, the level of expression of GS is increased during ischemia in vivo or hypoxia in culture.

Catalog Number: 89361-954

Supplier: Genetex

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Description: Dendritic cells (DCs) that control immune responses were recently found to capture and transport HIV from the mucosal area to remote lymph nodes, where DCs hand over HIV to CD4+ T lymphocytes. DCs also amplify the amount of virus and extend the duration of viral infectivity. Multiple strains of HIV-1, HIV-2 and SIV bind to DCs via DC-SIGN. ICAM-3 is the natural ligand for DC-SIGN. A DC-SIGN homologue (termed DC-SIGNR, L-SIGN, and DC-SIGN2) was identified recently. DC-SIGN forms a novel gene family with DC-SIGNR and many alternatively spliced isoforms of DC-SIGN and DC-SIGNR are known to exisit. The expression of DC-SIGN was found in mucosal tissues including placenta, small intestine, and rectum.

Catalog Number: 10801-104

Supplier: Rockland Immunochemical

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Description: Provides an aseptic seal for transferring high-purity fluids

Catalog Number: 21020-216

Supplier: Thermo Fisher Scientific

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Description: Sharps container systems provide solutions for the safe and effective containment and disposal of contaminated needles, syringes, and other sharps.

Catalog Number: 19001-005

Supplier: VWR International

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Description: Small, lightweight unit takes temperature readings of any surface in less than one second.

Catalog Number: 12777-846

Supplier: VWR International

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