Uromodulin Human HEK293

Cat. No.	Size	Price 1 - 4 pcs / 5 - 9 pcs / 10+ pcs
New RD175163100-HEK	0.1 mg	$421 / $370 / On request

Technical Data

Type

Recombinant protein

Description

Total 595 AA. MW: 65 kDa (calculated). UniProtKB acc. no. P07911 (Asp25-Val613). N-terminal His-tag (6 extra AA).

Amino Acid Sequence

DTSEARWCSECHSNATCTEDEAVTTCTCQEGFTGDGLTCVDLDECAIPGAHNCSANSSCVNTPGSFSCVCPEGFRLSPGLGCTDVDECAEPGLSHCHALATCVNVVGSYLCVCPAGYRGDGWHCECSPGSCGPGLDCVPEGDALVCADPCQAHRTLDEYWRSTEYGEGYACDTDLRGWYRFVGQGGARMAETCVPVLRCNTAAPMWLNGTHPSSDEGIVSRKACAHWSGHCCLWDASVQVKACAGGYYVYNLTAPPECHLAYCTDPSSVEGTCEECSIDEDCKSNNGRWHCQCKQDFNITDISLLEHRLECGANDMKVSLGKCQLKSLGFDKVFMYLSDSRCSGFNDRDNRDWVSVVTPARDGPCGTVLTRNETHATYSNTLYLADEIIIRDLNIKINFACSYPLDMKVSLKTALQPMVSALNIRVGGTGMFTVRMALFQTPSYTQPYQGSSVTLSTEAFLYVGTMLDGGDLSRFALLMTNCYATPSSNATDPLKYFIIQDRCPHTRDSTIQVVENGESSQGRFSVQMFRFAGNYDLVYLHCEVYLCDTMNEKCKPTCSGTRFRSGSVIDQSRVLNLGPITRKGVQATVHHHHHH

Source

HEK293

Purity

˃ 90 % by SDS-PAGE

SDS-PAGE Gel

12 % SDS-PAGE separation of Human Uromodulin:

M.W. marker – 6.5, 12.5, 21, 29, 45, 67, 97.4 kDa
Reduced and boiled sample, 2 μg/lane
Non-reduced and non-boiled sample, 2 μg/lane

Endotoxin

< 1.0 EU/μg

Formulation

Filtered (0.4 μm) and lyophilized in 20mM TRIS, 50mM NaCl, pH 7.5

Reconstitution

Add deionized water to prepare a working stock solution of approximately 0.5 mg/mL and let the lyophilized pellet dissolve completely.

Shipping

At ambient temperature. Upon receipt, store the product at the temperature recommended below.

Storage/Expiration

Store the lyophilized protein at -80 °C. Lyophilized protein remains stable until the expiry date when stored at -80 °C. Aliquot reconstituted protein to avoid repeated freezing/thawing cycles and store at -80 °C for long term storage. Reconstituted protein can be stored at 4 °C for a week.

Quality Control Test

BCA to determine quantity of the protein.
SDS PAGE to determine purity of the protein. Endotoxin level determination.

Note

This product is intended for research use only.

Summary

Research topic

Renal disease

Summary

Uromodulin (Tamm-Horsfall protein, UMOD) is approx. 85-kDa glycoprotein that is produced in the thick ascending limb of Henle´s loop and early distal convoluted tubules of the nephron. It is a transmembrane protein, which is secreted into the urine through proteolytic cleavage of the glycosylphosphatidylinositol (GPI) anchor. It belongs to the GPI family. Healthy individuals excrete tens of miligrams of uromodulin per day, making in the most abundant protein in the urine. Uromodulin modulates cell adhesion and signal transduction by interacting with cytokines and it inhibits the aggregation of calcium crystals. By reducing calcium oxalate precipitation, uromodulin plays a protective role with respect to renal stone formation as demonstrated by recent studies on THP- deficient mice prone to nephrolithiasis. THP acts as a host defense factor against urinary tract infections induced by uropathogens such as Esherichia coli, Staphylococcus saphrophyticus, Proteus mirabilis and Klebsiela pneumonie. Uromodulin binds to type 1 fimbriae of Escherichia coli and thereby blocks colonization of urothelial cells. Tamm-Horsfall protein interacts with other molecules and cells including IL-1, IL-2, TNF, IgG, neuthrophils, lymphocytes and monocytes. Binding of uromodulin to neutrophils induces synthesis of IL-8, provokes the respiratory burst and degranulation and stimulates chemotaxis and phagocytosis. Recently, genome-wide association studies identified uromodulin as a risk factor for chronic kidney disease and hypertension. Mutations in the Uromodulin gene are associated with three autosomal dominant tubulo-interstitial nephropathies such as familial juvenile hyperuricemic nephropathy (FJHN), medullary cystic kidney disease (MCKD2) and glomerulocystic kidney disease (GCKD). These disorders are characterized by juvenile onset of hyperuricemia, gout and progressive renal failure.

Summary References (12)

References to Uromodulin

Bleyer AJ, Zivna M, Kmoch S. Uromodulin-associated kidney disease. Nephron Clin Pract. 2011;118 (1):c31-6
Cavallone D, Malagolini N, Monti A, Wu XR, Serafini-Cessi F. Variation of high mannose chains of Tamm-Horsfall glycoprotein confers differential binding to type 1-fimbriated Escherichia coli. J Biol Chem. 2004 Jan 2;279 (1):216-22
Devuyst O, Dahan K, Pirson Y. Tamm-Horsfall protein or uromodulin: new ideas about an old molecule. Nephrol Dial Transplant. 2005 Jul;20 (7):1290-4
Gudbjartsson DF, Holm H, Indridason OS, Thorleifsson G, Edvardsson V, Sulem P, de Vegt F, d'Ancona FC, den Heijer M, Wetzels JF, Franzson L, Rafnar T, Kristjansson K, Bjornsdottir US, Eyjolfsson GI, Kiemeney LA, Kong A, Palsson R, Thorsteinsdottir U, Stefansson K. Association of variants at UMOD with chronic kidney disease and kidney stones-role of age and comorbid diseases. PLoS Genet. 2010 Jul;6 (7):e1001039
Kreft B, Jabs WJ, Laskay T, Klinger M, Solbach W, Kumar S, van Zandbergen G. Polarized expression of Tamm-Horsfall protein by renal tubular epithelial cells activates human granulocytes. Infect Immun. 2002 May;70 (5):2650-6
Lau WH, Leong WS, Ismail Z, Gam LH. Qualification and application of an ELISA for the determination of Tamm Horsfall protein (THP) in human urine and its use for screening of kidney stone disease. Int J Biol Sci. 2008;4 (4):215-22
Lhotta K. Uromodulin and chronic kidney disease. Kidney Blood Press Res. 2010;33 (5):393-8
Pourmand G, Nasseh H, Sarrafnejad A, Mehrsai A, Hamidi Alamdari D, Nourijelyani K, Shekarpour L. Urinary Tamm-Horsfall protein and citrate: a case-control study of inhibitors and promoters of calcium stone formation. Urol J. 2005 Spring;2 (2):79-85
Raffi HS, Bates JM Jr, Laszik Z, Kumar S. Tamm-horsfall protein protects against urinary tract infection by proteus mirabilis. J Urol. 2009 May;181 (5):2332-8
Rhodes DC. Binding of Tamm-Horsfall protein to complement 1q and complement 1, including influence of hydrogen-ion concentration. Immunol Cell Biol. 2002 Dec;80 (6):558-66
Zasloff M. Antimicrobial peptides, innate immunity, and the normally sterile urinary tract. J Am Soc Nephrol. 2007 Nov;18 (11):2810-6
Zaucke F, Boehnlein JM, Steffens S, Polishchuk RS, Rampoldi L, Fischer A, Pasch A, Boehm CW, Baasner A, Attanasio M, Hoppe B, Hopfer H, Beck BB, Sayer JA, Hildebrandt F, Wolf MT. Uromodulin is expressed in renal primary cilia and UMOD mutations result in decreased ciliary uromodulin expression. Hum Mol Genet. 2010 May 15;19 (10):1985-97

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