Recombinant Human NPTX1 Protein (C-6His)

Name: Recombinant Human NPTX1 Protein (C-6His)
Brand: Beta LifeScience
SKU: BL-1177NP
Availability: InStock

BL-1177NP: Greater than 95% as determined by reducing SDS-PAGE. (QC verified)

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Product Overview

Description	Recombinant Human Neuronal Pentraxin-1 is produced by our Mammalian expression system and the target gene encoding Gln23-Asn432 is expressed with a 6His tag at the C-terminus.
Accession	Q15818
Synonym	Neuronal pentraxin-1;NPTX1;NP1
Gene Background	Neuronal Pentraxin (NPTX1, NP1) is a secreted glycoprotein within the Pentraxin family. NPTX1 is co‑expressed and forms heteromultimers with the related secreted protein, NPTX2/NARP, NPTXR (Neuronal Pentraxin Receptor) at excitatory synapses. Mature human NPTX1 shares 97% aa sequence identity with mouse, and rat NPTX1. It is produced by hippocampal, cerebral and cerebellar neurons, retinal ganglia and the inner nuclear layer of the retina. It is enriched on presynaptic axonal membranes where it forms complexes with NPTXR. It may be involved in mediating uptake of synaptic material during synapse remodeling or in mediating the synaptic clustering of AMPA glutamate receptors at a subset of excitatory synapses.
Molecular Mass	45.9 KDa
Apmol Mass	50-55 KDa, reducing conditions
Formulation	Lyophilized from a 0.2 μm filtered solution of PBS, 1mM EDTA, pH 7.4.
Endotoxin	Less than 0.1 ng/µg (1 EU/µg) as determined by LAL test.
Purity	Greater than 95% as determined by reducing SDS-PAGE. (QC verified)
Biological Activity	Not tested
Reconstitution	Always centrifuge tubes before opening. Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100μg/ml. Dissolve the lyophilized protein in distilled water. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
Storage	Lyophilized protein should be stored at ≤ -20°C, stable for one year after receipt. Reconstituted protein solution can be stored at 2-8°C for 2-7 days. Aliquots of reconstituted samples are stable at ≤ -20°C for 3 months.
Shipping	The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature listed below.
Usage	For Research Use Only

Target Details

Target Function	May be involved in mediating uptake of synaptic material during synapse remodeling or in mediating the synaptic clustering of AMPA glutamate receptors at a subset of excitatory synapses.
Subcellular Location	Cytoplasmic vesicle, secretory vesicle.
Database References	HGNC: 7952 OMIM: 602367 KEGG: hsa:4884 STRING: 9606.ENSP00000307549 UniGene: Hs.514556

Gene Functions References

NPTX1 is down-regulated in colon cancer. In addition, NPTX1 inhibits the proliferation of colon cancer cells via decreasing cyclin A2 and CDK2. PMID: 29345391
NPTX1 was significantly associated with bipolar disorder. PMID: 25053281
findings suggest that lower NARP mRNA expression contributes to lower excitatory drive onto parvalbumin interneurons in schizophrenia. PMID: 26038830
These results suggest that NPTX1 hypermethylation and consequent mRNA changes might be an important molecular mechanism in lung cancer. PMID: 25646694
Taken together, these results demonstrate that NP1 gene is a target of as hypoxia inducible factor-1 alpha and it regulates NP1 expression by binding to hypoxia responsive elements in its promoter region. PMID: 25498504
Long acting progestin contraceptive-enhanced NPTX1 secretion and reactive oxygen species generation in endometrial stromal cells impair endometrial endothelial cells survival resulting in a loss in vascular integrity. PMID: 25029423
NPTX1 binds and inhibits TDGF1, and reduces both Nodal and BMP signaling. PMID: 24529709
Neuronal pentraxin 1 transgene is a key factor for the synapse loss, the neurite damage, and the apoptotic neuronal death evoked by amyloid-beta protein, which regulates NP1 expression. PMID: 17151277
The purpose of the present study was to assess the toxic effect of taipoxin in SCLC-cell lines and to determine if toxicity correlates to NPR and NP1 and NP2 expression levels. PMID: 16115696

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.