The Protein
| Number of residues | 76 |
| Molecular mass | 8564.8448 Da |
| Isoelectric point (pI) | 6.79 |
| Gene names | RPS27A (UBA80, UBCEP1), UBA52 (UBCEP2), UBB, UBC |
Ubiquitin is a small protein that exists in all eukaryotic cells. It performs its myriad functions through conjugation to a large range of target proteins. A variety of different modifications can occur. The ubiquitin protein itself consists of 76 amino acids and has a molecular mass of about 8.5 kDa. Key features include its C-terminal tail and the 7 lysine residues. It is highly conserved among eukaryotic species: Human and yeast ubiquitin share 96% sequence identity. The human ubiquitin sequence in one-letter code (lysine residues in bold):
| MQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEGIPPDQQRLIFAGKQLEDGRTLSDYNIQKESTLHLVLRLRGG |
Read more about this topic: Ubiquitin
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