Recombinant Human Keratin, type II cytoskeletal 1(KRT1)

In Stock
Code CSB-EP012503HU
Size US$2466
  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.

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Product Details

Purity Greater than 85% as determined by SDS-PAGE.
Target Names KRT1
Uniprot No. P04264
Research Area Signal Transduction
Alternative Names 67 kDa cytokeratin; CK-1; CK1; Cytokeratin-1; Cytokeratin1; EHK; EHK1; Epidermolytic hyperkeratosis 1; EPPK; Hair alpha protein; K1; K2C1_HUMAN; Keratin; Keratin type II cytoskeletal 1; Keratin-1; Keratin1; KRT 1; Krt1; KRT1A; NEPPK; type II cytoskeletal 1; Type II keratin Kb1; Type-II keratin Kb1
Species Homo sapiens (Human)
Source E.coli
Expression Region 2-644aa
Note: The complete sequence including tag sequence, target protein sequence and linker sequence could be provided upon request.
Mol. Weight 69.9 kDa
Protein Length Full Length of Mature Protein
Tag Info N-terminal 6xHis-tagged
Form Liquid or Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol.
Note: If you have any special requirement for the glycerol content, please remark when you place the order.
If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.
and FAQs
Protein FAQs
Storage Condition Store at -20°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time Basically, we can dispatch the products out in 3-7 working days after receiving your orders. Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Notes Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet & COA Please contact us to get it.

Target Data

Function May regulate the activity of kinases such as PKC and SRC via binding to integrin beta-1 (ITB1) and the receptor of activated protein C kinase 1 (RACK1). In complex with C1QBP is a high affinity receptor for kininogen-1/HMWK.
Gene References into Functions
  1. The authors report a large Italian family affected Palmoplantar Keratoderma and Charcot Marie Tooth disease. Two different mutated genes, KRT1 and MPZ were responsible for the two main clinical signs. Exome analysis detected two missense mutations, one in KRT1 and one in MPZ. PMID: 27639257
  2. Results show that missense mutations exert dominant negative effects on the keratins K1/K10 protein structure by altering inter-chain interactions. PMID: 27421141
  3. KRT1 and the specific polymorphism of KRT1 in this Chinese Han population are associated with autoimmune diseases SLE and SSc PMID: 29028840
  4. Case Report: post-zygotic mosaicism of KRT/1o mutations in epidermolytic Ichthyosis. PMID: 27722766
  5. KRT1 played an important role of maintaining epithelial barrier and its down-regulation in intestinal tissue was correlated with the progression of inflammatory bowel disease. PMID: 28111259
  6. Report genetic/clinical spectrum of KRT1 mutations in keratinopathic ichthyosis. PMID: 26581228
  7. demonstrated the presence of a genetic cutaneous mosaicism. Both patients carry the KRT1 pI479T substitution, but in the palmoplantar areas of one of them, only the mutated allele is expressed (hemizygous). This leads to highlight a new type of cutaneous mosaic, the palmoplantar mosaicism PMID: 25904304
  8. In our study, the missense mutation in the proband and his mother with epidermolytic ichthyosis was a single amino acid difference in codon 478, which causes more serious skin manifestations PMID: 25808222
  9. Complete structure of an epithelial keratin 1/keratin 10 dimer has been presented. PMID: 26181054
  10. These findings indicate that exogenous FABP4 interacts with plasma membrane proteins, specifically CK1. PMID: 26343611
  11. analysis of a heterozygous novel splice junction mutation in the 2B domain of KRT1 in a family with diffuse palmoplantar keratoderma PMID: 25429721
  12. In ichthyosis with confetti, a causal de novo KRT1 mutation had a C-terminal frameshift, replacing 22 C-terminal AAs with an alternate 30-AA peptide. It distorted the IF network and mislocalized to the nucleus. Reversion occurred by mitotic recombination. PMID: 25774499
  13. In HeLa cells transiently expressing C2GnT-M-GFP, knockdown of KRT1 does not affect Golgi morphology but leaves C2GnT-M outside of the Golgi, resulting in the formation of sialyl-T antigen. PMID: 25605727
  14. Decreased levels of cytokeratin-1 is associated with breast cancer. PMID: 25073515
  15. Hsp74, a potential bladder cancer marker, has direct interaction with keratin 1. PMID: 25050384
  16. identified among endothelial antigens to which antibodies are produced during heart transplant rejection PMID: 23707440
  17. Case Report/Letter: specific mutation in 2B domain of KRT1 gives rise to mild phenotype of epidermolytic hyperkeratosis mimicking ichthyosis bullosa of Siemens. PMID: 23623204
  18. study reports 2 related women of Colombian origin, affected by a severe ichthyosis curth-macklin phenotype, who present a novel KRT1 mutation c.1577delG (p.Gly526Alafs*88) PMID: 22834809
  19. Absence of Krt1 caused a prenatal increase in interleukin-18 (IL-18) and the S100A8 and S100A9 proteins, accompanied by a barrier defect and perinatal lethality. PMID: 23132931
  20. Among Japanese patients with bullous congenital ichthyosiform erythroderma for which genetic diagnosis was determined, all showed mustations in KRT1 or KRT10. PMID: 23182068
  21. Identification Keratin 1 as a cDDP-resistant protein in nasopharyngeal carcinoma cell lines. PMID: 22348822
  22. High cytokeratin is associated with colorectal carcinogenesis. PMID: 21912905
  23. we describe one Chinese family affected with EHK, type PS-1 (severe palmoplantar hyperkeratosis, type 1) and report a recurrent missense mutation (c.1436T>C) in the 2B rod domain of KRT1 in this family. PMID: 22250628
  24. mutation analysis in patients with epidermolytic ichthyosis by direct sequencing of KRT1 and KRT10 genes; identified 14 different mutations, of which four have not been published previously PMID: 21271994
  25. keratin 1 L12 domain mutations are associated with a milder epidermolytic ichthyosis phenotype with pronounced palmoplantar keratoderma, and without neonatal erythroderma and scaling. PMID: 20500210
  26. Data demonstrate that genetic variants in the KRT1 interval contribute to quantifiable differences in the migration rates of keratinocytes isolated from different individuals. PMID: 17668073
  27. alpha-keratin intermediate filaments have a low-density core as seen by cryoelectron microscopy PMID: 12064938
  28. The humans hair Keratin 1 genes are each clustered in the genome and clusters are part of the large typeI epithelial keratin gene domains on chromosomes. PMID: 15797458
  29. bullous congenital ichthyosiform erythroderma (BCIE) caused by a mutation in the 1A helix initiation motif of keratin 1. PMID: 16361731
  30. A new genetic polymorphism has been detected, which is especially prevalent among the African-American population. PMID: 16417221
  31. Allelic expression differences result from the cumulative contribution of multiple DNA sequence polymorphisms. PMID: 16789827
  32. The 2 keratin 1 mutations are associated with tonotubular keratin, i.e. 'whorls' of aggregated keratin that form tubules as seen in transverse or in longitudinal sections PMID: 18795921
  33. Mutation L437P in the 2B domain of keratin 1 causes diffuse palmoplantar keratoderma in a Chinese pedigree. PMID: 19470048
  34. Keratin 1, an intermediate filament network component, is the binding partner of the lymphocytic choriomeningitis virus nucleoprotein. PMID: 19494018
  35. Infection by HPV may alter the differentiation status of the epidermis, leading to delayed or absent expression of cytokeratin 1. PMID: 19515043

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Involvement in disease Epidermolytic hyperkeratosis (EHK); Ichthyosis hystrix, Curth-Macklin type (IHCM); Keratoderma, palmoplantar, non-epidermolytic (NEPPK); Ichthyosis annular epidermolytic (AEI); Keratoderma, palmoplantar, striate 3 (SPPK3)
Subcellular Location Cell membrane
Protein Families Intermediate filament family
Tissue Specificity The source of this protein is neonatal foreskin. The 67-kDa type II keratins are expressed in terminally differentiating epidermis.
Database Links

HGNC: 6412

OMIM: 113800

KEGG: hsa:3848

STRING: 9606.ENSP00000252244

UniGene: Hs.80828

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