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R&D Systems/Human Hexosaminidase A/HEXA Antibody/AF6237/100 ug

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AF6237-100ug

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Species ReactivityHumanSpecificityDetects human Hexosaminidase A/HEXA in direct ELISAs and Western blots.SourcePolyclonal Sheep IgGPurificationAntigen Affinity-purifiedImmunogenS. frugiperda insect ovarian cell line Sf 21-derived recombinant human Hexosaminidase A/HEXALeu23-Thr529Accession # P06865FormulationLyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.LabelUnconjugated Western Blot2 µg/mLSee belowSimple Western20 µg/mLSee belowReconstitutionSterile PBS to a final concentration of 0.2 mg/mL.ShippingThe product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °CStability & StorageUse a manual defrost freezer and avoid repeated freeze-thaw cycles. 12 months from date of receipt, -20 to -70 °C as supplied.1 month, 2 to 8 °C under sterile conditions after reconstitution.6 months, -20 to -70 °C under sterile conditions after reconstitution. Entrez Gene IDs:3073 (Human)Alternate Names:beta-hexosaminidase subunit alpha; Beta-N-acetylhexosaminidase subunit alpha; EC 3.2.1; EC 3.2.1.52; HEXA; hexosaminidase A (alpha polypeptide); Hexosaminidase A; Hexosaminidase subunit A; MGC99608; N-acetyl-beta-glucosaminidase subunit alpha; TSDBackground:HEXA (beta-hexosaminidase subunit alpha; also hexaminidase subunit alpha) is a 50-56 kDa glycoprotein member of the glycosyl hydrolase #20 family of enzymes. It is found in the lysosomes of a variety of cell types including fibroblasts, lacrimal acinar cells, and neurons.beta -Hexosaminidase is a multimeric enzyme that cleaves aminoacetylhexosamines from multiple glycosylated molecules. It exists in three noncovalent isozyme forms, among which is an A form that is trimeric and composed of onealpha - and twobeta -subunits, a B form that is tetrameric and contains twoalpha - and twobeta -subunits, and a dimeric S form that contains twoalpha -subunits. Thealpha - andbeta -subunits are products of related but distinct genes. Thebeta -hexosiminidase A form acts on a wide range of substrates, while the B form activity is biased towards sulfated hexoses. Human HEXA is synthesized as a 529 aa (amino acid) prepro-precursor. It contains a 22 aa signal sequence, a 66 aa prosegment, and a 441 aa mature region that contains a catalytic domain (aa 167-488). The prosegment may undergo additional processing through His90, and this segment (≈ 6 kDa) is known to remain linked to the mature region via a disulfide bond. Notably, circulating HEXA is comprised only of subunit proforms whose MW may run some 10 kDa higher in SDS-PAGE. Over aa 23-529, human HEXA shares 85% and 57% aa sequence identity with mouse HEXA and the human HEXAbeta -subunit proprecursor, respectively.

R&D Systems位于美国的明尼苏达州，一直致力于生物制品的开发与生产。公司成立之初主要生产用于医院及临床应用的血控品。1997年，公司推出第一个产品--富血小板血浆质控品；1981年，公司成为全球第二家生产含血小板全血控品的供应商。40多年的发展中，R&D Systems仍持续开发各种血控品产品。

1985年，作为公司推出的第一个科研试剂产品，也是全球第一家将该产品进行商业化生产的产品，R&D Systems成功上市了TGF-beta1蛋白。作为胞外信号分子，TGF-beta1蛋白在多种细胞中进行表达，并作为胞外信号分子参与免疫功能，细胞增殖和细胞分化等生物学过程。该产品推出后，公司陆续从生物材料中纯化了几种细胞因子产品并推向市场。

天然蛋白类产品的成功推广，加速了R&D Systems在细胞因子市场的开拓。公司于1985年形成Growth Factor事业部（现Biotechnology事业部）。Biotechnology事业部的目标是生产和营销重组人细胞因子。与天然来源提取蛋白相比较，DNA重组技术生产的蛋白产品其成本更低，产量更高，完全摆脱原料的限制。1989年，Biotechnology事业部开始开发抗细胞因子的单克隆和多克隆抗体，并于1990年开发了第一个ELISA试剂盒。

2014年2月10日，R&D Systems的母公司宣布命名为Bio-Techne. Bio-Techne旗下包括R&D Systems, Novus Biologicals, BiosPacific, Tocris Bioscience, Boston Biochem和Bionostics。