Product Name	Anti-Pro-neuregulin-1, membrane-bound isoform/AF594
Chinese Name	AF594标记的神经胶质生长因子/神经调节蛋白β抗体
Alias	Acetylcholine receptor-inducing activity; ARIA; Breast cancer cell differentiation factor p45; CHICK, homolog of; GGF; GGF2; Glial growth factor; Heregulin; heregulin, alpha (45kD, ERBB2 p185-activator); heregulin, alpha; HGL; HRG; HRG1; HRGA; MST131; NDF; Neu differentiation factor; neuregulin 1 type IV beta 1a; neuregulin 1 type IV beta 3; NRG 1; nrg1; NRG1 beta; NRG1_HUMAN; Pro-neuregulin-1, membrane-bound isoform; Pro-NRG1; Sensory and motor neuron-derived factor; SMDF; NRG1_MOUSE.
Research Area	Tumour  Signal transduction
Immunogen Species	Rabbit
Clonality	Polyclonal
React Species	Human, Mouse, Rat,  (predicted: Chicken, Dog, Rabbit, )
Applications	IF=1:50-200  not yet tested in other applications. optimal dilutions/concentrations should be determined by the end user.
Molecular weight	71kDa
Form	Lyophilized or Liquid
Concentration	1mg/ml
immunogen	KLH conjugated synthetic peptide derived from mouse HRG Beta1
Lsotype	IgG
Purification	affinity purified by Protein A
Storage Buffer	0.01M TBS(pH7.4) with 1% BSA, 0.03% Proclin300 and 50% Glycerol.
Storage	Store at -20 °C for one year. Avoid repeated freeze/thaw cycles. The lyophilized antibody is stable at room temperature for at least one month and for greater than a year when kept at -20°C. When reconstituted in sterile pH 7.4 0.01M PBS or diluent of antibody the antibody is stable for at least two weeks at 2-4 °C.
Product Detail	background: NRG1 (Neuregulin 1) is a ligand for ERBB3 and ERBB4 tyrosine kinase receptors. NRG1 concomitantly recruits ERBB1 and ERBB2 coreceptors, resulting in ligand-stimulated tyrosine phosphorylation and activation of the ERBB receptors. There are multiple isoforms of NRG1, the type I isoforms (isoforms 1-8) have an Ig domain and a glycosylation domain. There are 10 known isoforms in total which perform distinct tissue-specific functions. Type I isoforms are the predominant forms expressed in the endocardium. Isoform alpha is expressed in breast, ovary, testis, prostate, heart, skeletal muscle, lung, placenta liver, kidney, salivary gland, small intestine and brain, but not in uterus, stomach, pancreas, and spleen. Isoform 3 is the predominant form in mesenchymal cells and in nonneuronal organs, whereas isoform 5 is the major neuronal form. Isoform 8 is expressed in spinal cord and brain. Function: Direct ligand for ERBB3 and ERBB4 tyrosine kinase receptors. Concomitantly recruits ERBB1 and ERBB2 coreceptors, resulting in ligand-stimulated tyrosine phosphorylation and activation of the ERBB receptors. The multiple isoforms perform diverse functions such as inducing growth and differentiation of epithelial, glial, neuronal, and skeletal muscle cells; inducing expression of acetylcholine receptor in synaptic vesicles during the formation of the neuromuscular junction; stimulating lobuloalveolar budding and milk production in the mammary gland and inducing differentiation of mammary tumor cells; stimulating Schwann cell proliferation; implication in the development of the myocardium such as trabeculation of the developing heart. Isoform 10 may play a role in motor and sensory neuron development. Subunit: The cytoplasmic domain interacts with the LIM domain region of LIMK1. Interacts with ERBB3 and ERBB4. Subcellular Location: Pro-neuregulin-1, membrane-bound isoform: Cell membrane; Single-pass type I membrane protein. Note=Does not seem to be active. Neuregulin-1: Secreted. Isoform 8: Nucleus. Note=May be nuclear. Isoform 9: Secreted. Note=Has a signal peptide. Isoform 10: Membrane; Single-pass type I membrane protein. Note=May possess an internal uncleaved signal sequence. Tissue Specificity: Type I isoforms are the predominant forms expressed in the endocardium. Isoform alpha is expressed in breast, ovary, testis, prostate, heart, skeletal muscle, lung, placenta liver, kidney, salivary gland, small intestine and brain, but not in uterus, stomach, pancreas, and spleen. Isoform 3 is the predominant form in mesenchymal cells and in non-neuronal organs, whereas isoform 6 is the major neuronal form. Isoform 8 is expressed in spinal cord and brain. Isoform 9 is the major form in skeletal muscle cells; in the nervous system it is expressed in spinal cord and brain. Also detected in adult heart, placenta, lung, liver, kidney, and pancreas. Isoform 10 is expressed in nervous system: spinal cord motor neurons, dorsal root ganglion neurons, and brain. Predominant isoform expressed in sensory and motor neurons. Not detected in adult heart, placenta, lung, liver, skeletal muscle, kidney, and pancreas. Not expressed in fetal lung, liver and kidney. Type IV isoforms are brain-specific. Post-translational modifications: Proteolytic cleavage close to the plasma membrane on the external face leads to the release of the soluble growth factor form. N- and O-glycosylated. Extensive glycosylation precedes the proteolytic cleavage. DISEASE: Note=A chromosomal aberration involving NRG1 produces gamma-heregulin. Translocation t(8;11) with TENM4. The translocation fuses the 5'-end of TENM4 to NRG1 (isoform 8). The product of this translocation was first thought to be an alternatively spliced isoform. Gamma-heregulin is a soluble activating ligand for the ERBB2-ERBB3 receptor complex and acts as an autocrine growth factor in a specific breast cancer cell line (MDA-MB-175). Not detected in breast carcinoma samples, including ductal, lobular, medullary, and mucinous histological types, neither in other breast cancer cell lines. Similarity: Belongs to the neuregulin family. Contains 1 EGF-like domain. Contains 1 Ig-like C2-type (immunoglobulin-like) domain. Database links: Entrez Gene: 3084 Human Entrez Gene: 211323 Mouse Omim: 142445 Human SwissProt: Q02297 Human Unigene: 453951 Human Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. Heregulin-β是细胞间信号蛋白,在乳腺epithelial cells形态发生、导管形成，以及诱导乳腺epithelial cells分化成分泌腺泡中起到重要作用，对乳腺发育和乳腺功能调控具有重要意义。

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