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SRP3126

Sigma-Aldrich

NP-1 Peptide

≥98% (HPLC), human recombinant, expressed in E. coli, suitable for cell culture

Synonym(s):

Cryptdin, HNP-1, Neutrophil Peptide-1, alpha Defensin-1

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About This Item

UNSPSC Code:
12352202
NACRES:
NA.32

product name

NP-1 human, recombinant, expressed in E. coli, ≥98% (SDS-PAGE), ≥98% (HPLC), suitable for cell culture

biological source

human

recombinant

expressed in E. coli

Assay

≥98% (HPLC)
≥98% (SDS-PAGE)

form

lyophilized

mol wt

3.4 kDa

packaging

pkg of 20 μg

technique(s)

cell culture | mammalian: suitable

impurities

<0.1 EU/μg endotoxin, tested

color

white to off-white

UniProt accession no.

antibiotic activity spectrum

fungi
mycobacteria
viruses

Mode of action

cell membrane | interferes

shipped in

wet ice

storage temp.

−20°C

Gene Information

human ... NRP1(8829)

General description

Chemical structure: peptide
Defensins (α and β) are cationic peptides with a broad spectrum of antimicrobial activity that comprise an important arm of the innate immune system. The α-defensins which include neutrophil peptides-1, -2 and -3, (NP-1, NP-2 and NP-3) are distinguished from the β-defensins by the pairing of their three disulfide bonds. Neutrophil-1 (NP-1) is expressed as the C-terminal portion of an inactive precursor protein, which also contains a 19 amino acid N-terminal signal sequence and a 45 amino acid polypeptide. The protein contains a six-cysteine motif that forms three intra-molecular disulfide bonds. It is a transmembrane glycoprotein. Recombinant human NP-1 is a 3.4kDa protein containing 30 amino acid residues.

Biochem/physiol Actions

Neutrophil peptide-1 (NP-1) exhibits antimicrobial activity. It also has a chemotactic function in dendritic cells. It has a role in the growth and metastasis of cancer cells. The protein acts as multifunctional co-receptor and interacts with various signaling cascades. NP-1 associates with epithelial growth factor (EGF) and its receptor (EGFR). It also interacts with hepatocyte growth factor (HGF) and its receptor c-Met.

Sequence

ACYCRIPACI AGERRYGYCI YQGRLWAFCC

Physical form

Lyophilized with no additives.

Reconstitution

Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Haiyan Jia et al.
Chembiochem : a European journal of chemical biology, 15(8), 1161-1170 (2014-04-29)
The interaction between VEGF-A and its neuropilin (NRP) receptors mediates a number of important biological effects. NRP1 and the related molecule NRP2 are widely expressed on multiple tumour types and throughout the tumour vasculature, and are emerging as critical molecules
Neuropilin-1 is associated with clinicopathology of gastric cancer and contributes to cell proliferation and migration as multifunctional co-receptors.
Li L
Journal of Experimental & Clinical Cancer Research, 35, 16-16 (2016)
Pavel Melicherčík et al.
Diagnostics (Basel, Switzerland), 10(1) (2020-01-16)
The α-defensins (AD) present in synovial fluid have been regarded as constituting the most accurate periprosthetic joint infection (PJI) biomarker. The methods most commonly used for estimating AD as a biomarker are the qualitative Synovasure® PJI tests, based on the
Antibacterial activity of human neutrophil defensin HNP-1 analogs without cysteines.
Varkey J and Nagaraj R
Antimicrobial Agents and Chemotherapy, 49(11), 4561-4566 (2005)
Juan Cong Dong et al.
Journal of cellular and molecular medicine, 19(9), 2286-2295 (2015-07-07)
The purpose of this study was to determine the correlation between over-expression of the neuropilin 1 (NRP1) gene and growth, survival, and radio-sensitivity of non-small cell lung carcinoma (NSCLC) cells. 3-[4,5-dimethylthylthiazol-2-yl]-2,5 diphenyltetrazolium broide (MTT) and colony assays were then performed

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