Epidermal growth factor

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Epidermal growth factor (beta-urogastrone)
Image:PBB Protein EGF image.jpg
PDB rendering based on 1ivo.
Available structures: 1ivo, 1jl9, 1nql, 1p9j
Identifiers
Symbol(s) EGF; URG
External IDs OMIM: 131530 MGI: 95290 Homologene: 1483
RNA expression pattern

Image:PBB GE EGF 206254 at tn.png

More reference expression data

Orthologs
Human Mouse
Entrez 1950 13645
Ensembl ENSG00000138798 ENSMUSG00000028017
Uniprot P01133 Q3UWD7
Refseq NM_001963 (mRNA)
NP_001954 (protein) 		NM_010113 (mRNA)
NP_034243 (protein)
Location Chr 4: 111.05 - 111.15 Mb Chr 3: 129.67 - 129.75 Mb
Pubmed search [1] [2]
Image:MAPKpathway.png
Diagram showing key components of the MAPK/ERK pathway. In the diagram, "P" represents phosphate. Note EGF at the very top.

Epidermal growth factor or EGF is a growth factor that plays an important role in the regulation of cell growth, proliferation, and differentiation. Human EGF is a 6045-Da protein with 53 amino acid residues and three intramolecular disulfide bonds.[1]

Contents

[edit] Function

EGF acts by binding with high affinity to epidermal growth factor receptor (EGFR) on the cell surface and stimulating the intrinsic protein-tyrosine kinase activity of the receptor (see the second diagram). The tyrosine kinase activity, in turn, initiates a signal transduction cascade that results in a variety of biochemical changes within the cell - a rise in intracellular calcium levels, increased glycolysis and protein synthesis, and increases in the expression of certain genes including the gene for EGFR - that ultimately lead to DNA synthesis and cell proliferation.[2]

[edit] EGF-family

EGF is the founding member of the EGF-family of proteins. Members of this protein family have highly similar structural and functional characteristics. Besides EGF itself other family members include:[3]

All family members contain one or more repeats of the conserved amino acid sequence:

CX7CX4-5CX10-13CXCX8GXRC

Where X represents any amino acid.[3]

This sequence contains 6 cysteine residues that form three intramolecular disulphide bonds. Disulphide bond formation generates three structural loops that are essential for high-affinity binding between members of the EGF-family and their cell-surface receptors.[4]

[edit] EGF as Therapeutic Protein

EGF is currently being marketed as a therapeutic protein for the treatment of diabetic foot ulcers by at least three companies. Bharat Biotech International, a company based in India, is marketing EGF as REGEN-D, Daewoong Pharmaceutical, based in South Korea, is marketing EGF as Easyef, and the Center for Genetic Engineering and Biotechnology, in Cuba, is marketing EGF as CITOPROT-P.[5] [6] EGF is also used in a burn treatment cream product, Hebermin, manufactured by Heber Biotec S. A. in Cuba.[6]

[edit] References

  1. ^ Carpenter G, and Cohen S. (1990). "Epidermal growth factor". J. Biol. Chem. 265 (14): 7709-7712. PMID 2186024.
  2. ^ Fallon JH, Seroogy KB.et al (1984). "Epidermal growth factor immunoreactive material in the central nervous system: location and development". Science 224 (4653): 1107-1109. PMID 6144184.
  3. ^ a b Dreux AC, Lamb DJ. et al. (2006). "The epidermal growth factor receptors and their family of ligands: their putative role in atherogenesis". Atherosclerosis 186 (1): 38-53. PMID 16076471.
  4. ^ Harris RC, Chung E, and Coffey RJ. (2003). "EGF receptor ligands". Exp. Cell. Res. 284 (1): 2-13. PMID 12648462.
  5. ^ Frew S, Rezaie R.et al (2007). "India’s health biotech sector at a crossroads". Nature Biotechnology 25 (4).
  6. ^ a b Lopez E, Acevedo B.et al (2002). "Development of Cuban Biotechnology". Journal of Commercial Biotechnology 9 (2).

[edit] External links

[edit] Further reading


v • d • e
Animal intercellular signaling peptides and proteins
Growth factorsEpidermal growth factor - Fibroblast growth factor (FGF2) - Nerve growth factor - Platelet-derived growth factor - Transforming growth factor (TGFα, TGFβ, TGFβ pathway)
OtherHedgehog (Sonic hedgehog) - Integrin - JAK/STAT (JAK/STAT) - MAPK/ERK pathway (MAPK/ERK) - NF-κB - Notch (1, 2, 3) - p53 - Wnt (WNT4, Frzb)
v • d • e
Hormones: gastrointestinal hormones
CCK - EGF - GIP - Gastrin releasing peptide - Gastrins - Proglucagon - Motilin - Peptide YY -Prokineticin - Secretin - VIP
de:Epidermaler Wachstumsfaktor

fr:Facteur de croissance épidermique ja:上皮成長因子 zh:表皮生长因子

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