Protein Name:
Egl nine homolog 1
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UniprotKB/SwissProt ID: P59722 (P59722)
Gene Name:
Egln1
Organism: Rattus norvegicus (Rat)
Function: Cellular oxygen sensor that catalyzes, under normoxic conditions, the post-translational formation of 4-hydroxyproline in hypoxia-inducible factor (HIF) alpha proteins. Hydroxylates a specific proline found in each of the oxygen-dependent degradation (ODD) domains (N-terminal, NODD, and C-terminal, CODD) of HIF1A. Also hydroxylates HIF2A. Has a preference for the CODD site for both HIF1A and HIF1B. Hydroxylated HIFs are then targeted for proteasomal degradation via the von Hippel-Lindau ubiquitination complex. Under hypoxic conditions, the hydroxylation reaction is attenuated allowing HIFs to escape degradation resulting in their translocation to the nucleus, heterodimerization with HIF1B, and increased expression of hypoxy-inducible genes. EGLN1 is the most important isozyme under normoxia and, through regulating the stability of HIF1, involved in various hypoxia-influenced processes such as angiogenesis in retinal and cardiac functionality. Target proteins are preferentially recognized via a LXXLAP motif
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Cytoplasm. Nucleus
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Graphical Visualization of S-nitrosylation Sites:
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The S-nitrosylation sites of P59722
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| No. |
Position |
S-nitrosylated Peptide |
Secondary Structure of S-nitrosylated Peptide |
Solvent Accessibility of nitrosylated Site |
PubMed ID |
| 1 |
116 |
LKLALEYIVP C MNKHGICVVD |
CCCCCCCCCC C CCCCCCCCCC |
41.54% |
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| 2 |
123 |
IVPCMNKHGI C VVDDFLGRET |
CCCCCCCCCC C CCCCCCCCCC |
4.75% |
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| 3 |
217 |
INGRTKAMVA C YPGNGTGYVR |
CCCCCCCCCC C CCCCCCCCCC |
35.97% |
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| 4 |
238 |
HVDNPNGDGR C VTCIYYLNKD |
CCCCCCCCCC C CCCCCCCCCC |
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| 5 |
241 |
NPNGDGRCVT C IYYLNKDWDA |
CCCCCCCCCC C CCCCCCCCCC |
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