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Home / Proteins & Peptide / Proteins

human proBDNF-Biotin

SKU : BHP21300015

Human proBrain-Derived Neurotrophic Factor Conjugated to Biotin

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Mfr.No.	B-256-B, B-256-B_1 mcg, B-256-B_10 mcg, B-256-B_50 mcg
Description	Human proBrain-Derived Neurotrophic Factor Conjugated to Biotin
Reconstitution	Centrifuge the vial (10,000 x g for 5 minutes) before adding solvent to spin down all the powder to the bottom of the vial. The lyophilized product may be difficult to visualize. Add solvent directly to the centrifuged vial. Gently tap, tilt, and roll the vial to aid dissolution. Avoid vigorous vortexing; light vortexing for up to 3 seconds is acceptable if needed. The product is soluble in pure water at high micromolar concentrations (5 uM - 1 mM). For long-term storage in solution, we recommend preparing a stock solution by dissolving the product in sterile water at a concentration between 100-1000x of the final working concentration. Divide the stock solution into small aliquots and store at -20°C. Before use, thaw the relevant vial(s) and dilute to the desired working concentration in your working buffer. Centrifuge all product preparations before use. It is recommended to prepare fresh solutions in working buffers just before use. Avoid multiple freeze-thaw cycles to maintain biological activity.
Background	BDNF is a neurotrophic factor produced by proteolytic cleavage of its precursor, proBDNF.1 The actions of BDNF are mediated via the binding to TrkB or p75NTR.2,3The precursor form was thought to be important for the correct folding, secretion and trafficking of the mature protein. A single-nucleotide polymorphism (Val66 to Met) in the pro-domain of the human BDNF gene impairs intracellular trafficking and regulated secretion of BDNF in primary cortical neurons and neurosecretory cells but not in endothelial and vascular cells.4 This has been shown to affect memory and lead to abnormal hippocampal function in humans.5The finding that proBDNF and not mature BDNF is the preferred ligand for p75NTR, has ushered in a new era which reexamines the biological roles of the two forms.6 Some biological roles for proBDNF have been proposed: It has been shown to be a pro-apoptotic ligand for sympathetic neurons7 expressing both p75NTR and sortilin, and to be involved in LTD8. On the other hand, it has also been shown to elicit prototypical TrkB responses in biological assays, such as TrkB tyrosine phosphorylation, and activation of ERK1/2.9In brain homogenates a mixture of both, proBDNF and mature BDNF has been found10,11 and in cortical neurons secretion of proBDNF has been shown.7 Binding of both proBDNF and mature BDNF to TrkB has been proposed to be via the R103 residue in the mature portion.9
Biological Activity	BDNF is a neurotrophic factor and binds p75NTR as well as TrkB receptors1,2. BDNF supports the survival of many cell types3-8. proBDNF has been shown to be a pro-apoptotic ligand for sympathetic neurons9 expressing both p75 and sortilin, and to be involved in LTD10.
Formulation	Lyophilized from double distilled water (ddH2O). May contain TFA as a residual counter ion.
Molecular Weight	~52 kDa (dimer)
Solubility	Centrifuge the vial before adding solvent (10,000 x g for 5 minutes) to spin down all the powder to the bottom of the vial. The lyophilized product may be difficult to visualize. Add solvent directly to the centrifuged vial. Tap the vial to aid in dissolving the lyophilized product. Tilt and gently roll the liquid over the walls of the vial. Avoid vigorous vortexing. Light vortexing for up to 3 seconds is acceptable if needed. The product is soluble in pure water at high micromolar concentrations (50 uM - 1 mM). For long-term storage in solution, we recommend preparing a stock solution by dissolving the product in sterile water at a concentration between 100-1000x of the final working concentration. Divide the stock solution into small aliquots and store at -20°C. Before use, thaw the relevant vial(s) and dilute to the desired working concentration in your working buffer. Centrifuge all product preparations before use. It is recommended to prepare fresh solutions in working buffers just before use. Avoid multiple freeze-thaw cycles to maintain biological activity.
Source	Modified recombinant protein, E. coli
Concentration	0.1 - 10 nM
Form	Lyophilized
Notes	Bioassay Tested: yes Steril endotoxin free: no Is Toxin: No
UNSPSC Code	12352202
Lead Time	1-2 Business Days
Modifications	LC-Biotin

Synonyms	proBrain-Derived Neurotrophic Factor
Gene Id	NGFR,NTRK2,SORT1,SORCS2
Sequence	MAPMKEANIRGQGGLAYPGVRTHGTLESVNGPKAGSRGLTSLADTFEHVIEELLDEDQKVRPNEENNKDADLYTSRVMLSSQVPLEPPLLFLLEEYKNYLDAANMSMRVAGHSDPARRGELSVCDSISEWVTAADKKTAVDMSGGTVTVLEKVPVSKGQLKQYFYETKCNPMGYTKEGCRGIDKRHWNSQCRTTQSYVRALTMDSKKRIGWRFIRIDTSCVCTLTIKRGR (the prodomain is shown in bold, underlined are the double point mutations preventing cleavage)
Target	p75NTR, Sortilin receptors

Country Of Origin	Israel/IL
Purity	>=98% (HPLC)
Storage	Storage After Reconstitution: Store the reconstituted solution for the shortest time possible at -20°C. We do not recommend storing the product in working solution for longer than one day. Avoid multiple freeze-thaw cycles. Storage Before Reconstitution: The product is shipped as a lyophilized powder at room temperature. Upon receipt, store the product at -20°C. Protect from moisture. Storage of solutions: Store the reconstituted solution at -20°C for the shortest time possible. Avoid multiple freeze-thaw cycles. We do not recommend storing the product in working solutions for longer than a day.

Applications	Western blot, Live imaging

Reference	Cahoon-Metzger, S.M. et al. (2001) Dev. Biol. 232, 246. Troy, C.M. et al. (2002) J. Biol. Chem. 277, 34295. Chen, Z.Y. et al. (2004) J. Neurosci. 24, 4401. Egan, M.F. et al. (2003) Cell 112, 257. Lee, R. et al. (2001) Science 294, 1945. Teng, H.K. et al. (2005) J. Neurosci. 25, 5455. Woo, N.H. et al. (2005) Nat. Neurosci. 8, 1069. Fayard, B. et al. (2005) J. Neurosci. Res. 80, 18. Michalski, B. et al. (2003) Mol. Brain Res. 111, 148. Zhou, X.F. et al. (2004) J. Neurochem. 91, 704. Bibel, M. and Barde, Y.A. (2000) Genes Dev. 14, 2929. Jing, S. et al. (1992) Neuron 9, 1067. Acheson, A. et al. (1995) Nature 374, 450. Morse, J.K. et al. (1993) J. Neurosci. 13, 4146. Hyman, C. et al. (1991) Nature 350, 230. Friedman, B. et al. (1995) J. Neurosci. 15, 1044. Meyer, M. et al. (1992) J. Cell Biol. 119, 45. Koliatsos, V.E. et al. (1993) Neuron 10, 359. Teng, H.K. et al. (2005) J. Neurosci. 25, 5455. Woo, N.H. et al. (2005) Nat. Neurosci. 8, 1069. Tolkovsky, A. (1997) Trends Neurosci. 20, 1.

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Combination SKU	Supplier No.	Size	Your price	Quantity
BHP21300015-1	B-256-B_1 mcg	1 mcg	$235		Add to Cart
BHP21300015-2	B-256-B_10 mcg	10 mcg	$747		Add to Cart
BHP21300015-3	B-256-B_50 mcg	50 mcg	$1492		Add to Cart

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