Recombinant Proteins

Modified or manipulated proteins encoded by recombinant DNA and suitable for a variety of purposes including the modification of gene sequences, mass protein production, and the manufacture of commercial products.

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Gibco™ Human LIF, Animal-Free Recombinant Protein, PeproTech®

Recombinant Protein

Pricing & Availability
Specifications

Content And Storage	-20°C
Purity or Quality Grade	≥ 98% by SDS-PAGE gel and HPLC analyses.
Conjugate	Unconjugated
Form	Lyophilized
Common Name	LIF
Molecular Weight (g/mol)	19.6 kDa
Gene Symbol	Lif
Endotoxin Concentration	<0.1 EU/ μg
Sequence	SPLPITPVNA TCAIRHPCHN NLMNQIRSQL AQLNGSANAL FILYYTAQGE PFPNNLDKLC GPNVTDFPPF HANGTEKAKL VELYRIVVYL GTSLGNITRD QKILNPSALS LHSKLNATAD ILRGLLSNVL CRLCSKYHVG HVDVTYGPDT SGKDVFQKKK LGCQLLGKYK QIIAVLAQAF
Expression System	E. coli
For Use With (Application)	Functional Assay
Source	E. coli
Name	Human LIF, Animal-Free
Accession Number	P15018
Regulatory Status	RUO
Gene Alias	CDF; cholinergic differentiation factor; cholinergic neuronal differentiation factor; d factor; DIA; differentiation inhibitory activity; differentiation-inducing factor; differentiation-stimulating factor; Emfilermin; hepatocyte-stimulating factor III; HILDA; human interleukin in DA cells; leukemia inhibitory factor; leukemia inhibitory factor (cholinergic differentiation factor); LIF; Melanoma-derived LPL inhibitor; MLPLI; myeloid leukaemia inhibitory factor
Biological Activity	Determined by its ability to stimulate the proliferation of human TF-1 cells. The expected ED50 is ≤ 0.1 ng/ml, corresponding to a specific activity of ≥ 1 x 10^7 units/mg
Gene ID (Entrez)	3976
Formulation	protein with no preservative
Recombinant	Recombinant

R&D Systems™ Recombinant Human BDNF Protein, Animal-Free

Recombinant Protein

Pricing & Availability
Specifications

Accession Number	P23560.1
Purity or Quality Grade	>97%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie« Blue Staining.
Conjugate	Unconjugated
Gene Alias	abrineurin, ANON2, brain-derived neurotrophic factor, BULN2, MGC34632, neurotrophin
Molecular Weight (g/mol)	M.W.-observed: 12 kDa, under reducing conditions., M.W.-theroretical: 13.1 kDa
Gene ID (Entrez)	627
Formulation	Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
Reconstitution	Reconstitute the 25μg size at 250μg/mL in PBS. Reconstitute all other sizes at 500μg/mL in PBS.
Endotoxin Concentration	<0.10 EU per 1μg of the protein by the LAL method.
Storage Requirements	Use 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. 3 months, -20 to -70 °C under sterile conditions after reconstitution.
For Use With (Application)	Bioactivity
Protein	BDNF
Source	E. coli-derived human BDNF protein Arg134-Arg247, with an N-terminal Met Produced using non-animal reagents in an animal-free laboratory.

R&D Systems™ Recombinant Mouse LIF, Animal-Free Protein

Pricing & Availability
Specifications

Accession Number	P09056.1
Conjugate	Unconjugated
Gene Alias	CDF, D factor, DIA, differentiation inhibitory activity, differentiation stimulating factor, Differentiation-stimulating factor, Emfilermin, HILDAcholinergic differentiation factor, leukemia inhibitory factor, leukemia inhibitory factor (cholinergic differentiation factor), Melanoma-derived LPL inhibitor, MLPLI
Molecular Weight (g/mol)	M.W. (Observed): Monomeric mouse LIF protein only, M.W. (Theroretical): 20 kDa
Gene ID (Entrez)	3976
Formulation	Lyophilized from acetonitrile/TFA
Reconstitution	Resuspend in 10 mM HCl at >100 μg/mL, prepare single use aliquots, add carrier protein if desired.
Endotoxin Concentration	<0.10 EU per 1 μg of the protein by the LAL method.
Storage Requirements	Store lyophilized protein between -20°C to -80°C until the date of expiry. Avoid freeze-thaw cycles.
For Use With (Application)	Bioactivity
Protein	LIF
Source	E. coli-derived mouse LIF protein

R&D Systems™ Recombinant Human Betacellulin Protein, Animal-Free

Pricing & Availability
Specifications

Accession Number	P35070.1
Purity or Quality Grade	>97%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie™ Blue Staining.
Conjugate	Unconjugated
Gene Alias	betacellulin, BTC, probetacellulin
Gene ID (Entrez)	685
Formulation	Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
Reconstitution	Reconstitute at 100-500 μg/mL in PBS.
Endotoxin Concentration	<0.10 EU / 1 μg of the protein by the LAL method.
Storage Requirements	Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 12 months from date of receipt, -20°C to -70°C as supplied. 1 month, 2°C to 8°C under sterile conditions after reconstitution. 3 months, -20°C to -70°C under sterile conditions after reconstitution.
Protein	Betacellulin/BTC
Source	E. coli-derived human Betacellulin/BTC protein Asp32-Gln118, with an N-terminal Met Produced using non-animal reagents in an animal-free laboratory.

R&D Systems™ Recombinant Human GDNF, Animal Free Protein

Pricing & Availability
Specifications

Accession Number	P39905.1
Conjugate	Unconjugated
Gene Alias	Astrocyte-derived trophic factor, ATF, ATF1, ATF2, glial cell derived neurotrophic factor, glial cell line derived neurotrophic factor, glial cell line-derived neurotrophic factor, HFB1-GDNF, hGDNF, HSCR3
Molecular Weight (g/mol)	M.W. (Observed): Dimeric GDNF protein only, M.W. (Theroretical): 30.4 kDa (dimer), 15 kDa (monomer)
Gene ID (Entrez)	2668
Formulation	Lyophilized from acetonitrile/TFA
Reconstitution	Resuspend in water at >100 μg/mL, prepare single use aliquots, add carrier protein if desired.
Endotoxin Concentration	<0.10 EU per 1 μg of the protein by the LAL method.
Storage Requirements	Store lyophilized protein between -20°C to -80°C until the date of expiry. Avoid freeze-thaw cycles.
For Use With (Application)	Bioactivity
Protein	GDNF
Source	E. coli-derived human GDNF protein

R&D Systems™ Recombinant Human Noggin, Animal-Free Protein

Pricing & Availability
Specifications

Accession Number	Q13253.1
Conjugate	Unconjugated
Gene Alias	noggin, SYM1, symphalangism 1 (proximal), synostoses (multiple) syndrome 1, SYNS1
Molecular Weight (g/mol)	M.W. (Observed): Oligomeric human Noggin protein only, M.W. (Theroretical): 46 kDa (dimer)
Gene ID (Entrez)	9241
Formulation	Lyophilized from acetonitrile/TFA
Reconstitution	Resuspend in 10 mM HCl at >100 μg/mL, prepare single use aliquots, add carrier protein if desired.
Endotoxin Concentration	<0.10 EU per 1 μg of the protein by the LAL method.
Storage Requirements	Store lyophilized protein between -20°C to -80°C until the date of expiry. Avoid freeze-thaw cycles.
For Use With (Application)	Bioactivity
Protein	Noggin
Source	E. coli-derived human Noggin protein

R&D Systems™ Recombinant Human LIF, Animal-Free Protein

Pricing & Availability
Specifications

Accession Number	P15018.1
Conjugate	Unconjugated
Gene Alias	CDF, D factor, DIA, differentiation inhibitory activity, differentiation stimulating factor, Differentiation-stimulating factor, Emfilermin, HILDAcholinergic differentiation factor, leukemia inhibitory factor, leukemia inhibitory factor (cholinergic differentiation factor), Melanoma-derived LPL inhibitor, MLPLI
Molecular Weight (g/mol)	M.W. (Observed): Monomeric human LIF protein only, M.W. (Theroretical): 17 kDa
Gene ID (Entrez)	3976
Formulation	Lyophilized from acetonitrile/TFA
Reconstitution	Resuspend in 10 mM HCl at >100 μg/mL, prepare single use aliquots, add carrier protein if desired.
Endotoxin Concentration	<0.10 EU per 1 μg of the protein by the LAL method.
Storage Requirements	Store lyophilized protein between -20°C to -80°C until the date of expiry. Avoid freeze-thaw cycles.
For Use With (Application)	Bioactivity
Protein	LIF
Source	E. coli-derived human LIF protein

R&D Systems™ Recombinant Human IL-2 Protein, Animal-Free

Contains the Cysteine to Serine substitution found in Proleukin™ (aldesleukin)

Pricing & Availability
Specifications

Accession Number	P60568.1
Purity or Quality Grade	>97%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie™ Blue Staining.
Conjugate	Unconjugated
Gene Alias	aldesleukin, IL2, IL-2, IL-2 lymphokine, interleukin 2, interleukin-2, involved in regulation of T-cell clonal expansion, Proleukin, T cell growth factor, T-cell growth factor, TCGF
Molecular Weight (g/mol)	M.W.-observed: 13 kDa, under reducing conditions., M.W.-theroretical: 15.5 kDa
Gene ID (Entrez)	3558
Formulation	Lyophilized from a 0.2 μm filtered solution in Sodium Acetate with Trehalose.
Reconstitution	Reconstitute at 500 μg/mL in sterile deionized water.
Endotoxin Concentration	<0.01 EU / 1 μg of the protein by the LAL method.
Storage Requirements	Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 12 months from date of receipt, -20°C to -70°C as supplied. 1 month, 2°C to 8°C under sterile conditions after reconstitution. 3 months, -20°C to -70°C under sterile conditions after reconstitution.
For Use With (Application)	Bioactivity
Protein	IL-2
Source	E. coli-derived human IL-2 protein Ala21-Thr153 (Cys145Ser), with and without an N-terminal Met Produced using non-animal reagents in an animal-free laboratory.

R&D Systems™ Recombinant Human IL-21 Protein, Animal-Free

Pricing & Availability
Specifications

Accession Number	Q9HBE4.3
Conjugate	Unconjugated
Gene Alias	CVID11, IL21, IL-21Za11interleukin-21, interleukin 21, interleukin-21 isoform, Za11
Molecular Weight (g/mol)	M.W.-observed: 15-17 kDa, under reducing conditions., M.W.-theroretical: 15 kDa
Gene ID (Entrez)	59067
Formulation	Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
Reconstitution	Reconstitute 25 μg size at 250 μg/mL in PBS and all the other sizes at 500 μg/mL in PBS.
Endotoxin Concentration	<0.10 EU per 1 μg of the protein by the LAL method.
Storage Requirements	Use 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. 3 months, -20 to -70 °C under sterile conditions after reconstitution.
For Use With (Application)	Bioactivity
Protein	IL-21
Source	E. coli-derived human IL-21 protein Gln32-Ser162 with a N-terminal Met Produced using non-animal reagents in an animal-free laboratory.

R&D Systems™ Recombinant Human PDGF-AA, Animal-Free Protein

Measured in a cell proliferation assay using NR6R-3T3 mouse fibroblast cells. ED50 for this effect is 50 to 200 ng/mL in a fluorometric assay using the redox sensitive dye, Resazurin.

Pricing & Availability
Specifications

Accession Number	P04085.1
Purity or Quality Grade	>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Conjugate	Unconjugated
Gene Alias	PDGF1, PDGF-A, PDGFAA
Molecular Weight (g/mol)	M.W. theroretical: 14 kDa (monomer)
Gene ID (Entrez)	5154
Gene Symbol	PDGFA
Reconstitution	Reconstitute at 0.2 mg/mL in sterile 4 mM HCl.
For Use With (Application)	Bioactivity
Species	Human

R&D Systems™ Recombinant Human M-CSF, Animal-Free Protein

Measured in a cell proliferation assay using M-NFS-60 mouse myelogenous leukemia lymphoblast cells

Pricing & Availability
Specifications

Accession Number	NP_757350.2
Purity or Quality Grade	>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Conjugate	Unconjugated
Molecular Weight (g/mol)	18.5 kDa (monomer)
Gene ID (Entrez)	1435
Gene Symbol	CSF1
Reconstitution	Reconstitute at 0.2 mg/mL in sterile PBS.
For Use With (Application)	Bioactivity
Species	Human
Name	colony stimulating factor 1 (macrophage), CSF1, CSF-1, Lanimostim, macrophage colony stimulating factor, macrophage colony-stimulating factor 1, MCSF, M-CSF, MCSFlanimostim, MGC31930

R&D Systems™ Recombinant Human IL-15 Protein, Animal-Free

Animal-Free.

Pricing & Availability
Specifications

Accession Number	P40933.1
Conjugate	Unconjugated
Gene Alias	IL15, IL-15 mgC9721, interleukin 15, interleukin-15
Molecular Weight (g/mol)	MolecularWeight-observed: 9 kDa, under reducing conditions; MolecularWeight-theroretical: 13 kDa
Gene ID (Entrez)	3600
Formulation	Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
Reconstitution	Reconstitute at 100-500 μg/mL in PBS.
Storage Requirements	Store the unopened product at -20°C to -70°C. Use a manual defrost freezer and avoid repeated freeze-thaw cycles. Do not use past expiration date.
For Use With (Application)	Bioactivity
Protein	IL-15

R&D Systems™ Recombinant Human VEGF 165 Protein, Animal-Free

Pricing & Availability
Specifications

Accession Number	NP_001165097.1
Purity or Quality Grade	>97%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie™ Blue Staining.
Conjugate	Unconjugated
Gene Alias	MVCD1, VAS, vascular endothelial growth factor A, Vascular permeability factor, Vasculotropin, VEGFA, VEGF-A, VEGFMGC70609, VPF, VPFvascular endothelial growth factor
Molecular Weight (g/mol)	M.W.-observed: 19-21 kDa, under reducing conditions., M.W.-theroretical: 19.2 kDa (monomer)
Gene ID (Entrez)	7422
Formulation	Lyophilized from a 0.2 μm filtered solution in Sodium Acetate.
Reconstitution	Reconstitute at 500 μg/mL in sterile deionized water.
Endotoxin Concentration	<0.01 EU / 1 μg of the protein by the LAL method.
Storage Requirements	Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 12 months from date of receipt, -20°C to -70°C as supplied. 1 month, 2°C to 8°C under sterile conditions after reconstitution. 3 months, -20°C to -70°C under sterile conditions after reconstitution.
For Use With (Application)	Bioactivity
Protein	VEGF
Source	E. coli-derived human VEGF protein Ala27-Arg191 Produced using non-animal reagents in an animal-free laboratory.

R&D Systems™ Recombinant Human PDGF-BB, Animal-Free Protein

Measured in a cell proliferation assay using NR6R-3T3 mouse fibroblast cells

Pricing & Availability
Specifications

Accession Number	P01127
Purity or Quality Grade	>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Conjugate	Unconjugated
Molecular Weight (g/mol)	12.3 kDa (monomer)
Gene ID (Entrez)	5155
Gene Symbol	PDGFB
Reconstitution	Reconstitute at 0.2 mg/mL in sterile 4 mM HCl.
For Use With (Application)	Bioactivity
Species	Human

R&D Systems™ Recombinant Human FGF-4, Animal-Free Protein

Pricing & Availability
Specifications

Accession Number	P08620.1
Conjugate	Unconjugated
Gene Alias	fibroblast growth factor 4, HBGF-4Transforming protein KS3, heparin secretory transforming protein 1, Heparin secretory-transforming protein 1, Heparin-binding growth factor 4, HST-1HSTF-1, HSTF1fibroblast growth factor 4 splice isoform, HSTFGF-4, human stomach cancer, transforming factor from FGF-related oncogene, kaposi sarcoma oncogene, KFGF, K-FGF, KS3, oncogene HST
Molecular Weight (g/mol)	M.W. (Observed): Monomeric FGF-4 protein only, M.W. (Theroretical): 14 kDa
Gene ID (Entrez)	2249
Formulation	Lyophilized from HEPES/NaCl/mannitol
Reconstitution	Resuspend in water at >100 μg/mL, prepare single use aliquots, add carrier protein if desired.
Endotoxin Concentration	<0.10 EU per 1 μg of the protein by the LAL method.
Storage Requirements	Store lyophilized protein between -20°C to -80°C until the date of expiry. Avoid freeze-thaw cycles.
For Use With (Application)	Bioactivity
Protein	FGF-4
Source	E. coli-derived human FGF-4 protein

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