K0253
Keratin from human epidermis
aqueous solution
biological source
human epidermis
Quality Level
Assay
≥90% (SDS-PAGE)
form
urea solution
technique(s)
ELISA: suitable
UniProt accession no.
storage temp.
2-8°C
Gene Information
human ... KRT1(3848)
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General description
Keratins are characteristic intermediate filament proteins of the epithelia. In human, keratin is classified into type I and type II. About 54 genes encodes for the keratin protein. The keratin 1 (KRT1) gene is mapped to human chromosome 12q13.13. It is the primary component of hair, skin and nails.
Application
Keratin from human epidermis has been used:
- as an analyte and a cross-reactant in the antibody-immobilized chip for testing selectivity coefficients
- as a standard in extracellular matrix (ECM) protein in in vitro protein degradation assays.
- asa a standard in enzyme linked immunosorbent assay (ELISA)
Biochem/physiol Actions
Keratins are important for the mechanical stability and integrity of epithelial cells and tissues. Some keratins also have regulatory functions and are involved in intracellular signaling pathways, e.g. protection from stress, wound healing, and apoptosis. This diverse group of cytoskeletal scaffolding proteins form intermediate filament networks which provide structural support to keratinocytes that maintain the integrity of the skin. Expression of keratin genes is usually regulated by differentiation of the epidermal cells within the stratifying squamous epithelium.
Physical form
Solution in 8 M urea, 50 mM Tris, 0.1 M β-mercaptoethanol and 0.1% sodium azide, pH 8.4
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Skin Sens. 1
Storage Class Code
10 - Combustible liquids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Regulatory Information
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A Pena et al.
Optics express, 13(16), 6268-6274 (2005-08-08)
We recorded one-photon excited fluorescence (1PEF) and two-photon excited fluorescence (2PEF) spectra of purified keratin from human epidermis, and determined the action cross section of this endogenous chromophore. We used this spectroscopic analysis to analyse multiphoton images of skin biopsies
D Sakthisekaran et al.
Biochemistry international, 21(1), 117-134 (1990-01-01)
The toxic nature of the secondary metabolite has been studied in rats. Changes in the concentration of a few key enzymes in carbohydrate metabolism have also been studied. In this, liver aldolase concentration was found to be significantly lowered. Since
A Elefante et al.
The neuroradiology journal, 26(2), 227-232 (2013-07-19)
Spinal chordomas are more often located on the midline and are associated with marked destruction of the vertebral bodies. We report a rare case of large cervical (C2-C3) right lateral paravertebral chordoma extending into the spinal canal through a very
B B Hogans et al.
Journal of cellular physiology, 137(2), 346-352 (1988-11-01)
To determine whether activation of protein kinase C is involved in the proliferation of interleukin-3 (IL-3) -dependent cells, we examined the effect of tumor-promoting phorbol esters on the in vitro proliferation of the IL-3-dependent cell lines FD and DA-1. The
Luis Requena et al.
JAMA dermatology, 149(4), 459-465 (2013-05-30)
Epithelioid sarcomalike (pseudomyogenic) hemangioendothelioma (ES-H) is a recently described and little-known vascular neoplasm that frequently presents with dermatologic lesions. Histopathologic characterization includes sheets or fascicles of plump, spindled and epithelioid, rhabdomyoblastlike neoplastic cells involving the dermis and often extending to
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