Ubiquitin-conjugating enzyme E2 H (UBE2H)
The protein contains 183 amino acids for an estimated molecular weight of 20655 Da.
Accepts ubiquitin from the E1 complex and catalyzes its covalent attachment to other proteins (PubMed:8132613, PubMed:17588522, PubMed:20061386). E2 ubiquitin conjugating enzyme that transfers ubiquitin to MAEA, a core component of the CTLH E3 ubiquitin-protein ligase complex (PubMed:29911972). In vitro catalyzes 'Lys-11'- and 'Lys-48'-linked polyubiquitination (PubMed:20061386). Capable, in vitro, to ubiquitinate histone H2A (PubMed:8132613). (updated: Nov. 7, 2018)
Protein identification was indicated in the following studies:
- Goodman and co-workers. (2013) The proteomics and interactomics of human erythrocytes. Exp Biol Med (Maywood) 238(5), 509-518.
- Hegedűs and co-workers. (2015) Inconsistencies in the red blood cell membrane proteome analysis: generation of a database for research and diagnostic applications. Database (Oxford) 1-8.
- Bryk and co-workers. (2017) Quantitative Analysis of Human Red Blood Cell Proteome. J Proteome Res. 16(8), 2752-2761.
- Chu and co-workers. (2018) Quantitative mass spectrometry of human reticulocytes reveal proteome-wide modifications during maturation. Br J Haematol. 180(1), 118-133.
Methods
The following articles were analysed to gather the proteome content of erythrocytes.
The gene or protein list provided in the studies were processed using the ID mapping API of Uniprot in September 2018. The number of proteins identified and mapped without ambiguity in these studies is indicated below.
Only Swiss-Prot entries (reviewed) were considered for protein evidence assignation.
| Publication | Identification 1 | Uniprot mapping 2 | Not mapped / Obsolete | TrEMBL | Swiss-Prot |
|---|---|---|---|---|---|
| Goodman (2013) | 2289 (gene list) | 2278 | 53 | 20599 | 2269 |
| Lange (2014) | 1234 | 1234 | 7 | 28 | 1224 |
| Hegedus (2015) | 2638 | 2622 | 0 | 235 | 2387 |
| Wilson (2016) | 1658 | 1528 | 170 | 291 | 1068 |
| d'Alessandro (2017) | 1826 | 1817 | 2 | 0 | 1815 |
| Bryk (2017) | 2090 | 2060 | 10 | 108 | 1942 |
| Chu (2018) | 1853 | 1804 | 55 | 362 | 1387 |
1 as available in the article and/or in supplementary material
2 uniprot mapping returns all protein isoforms as one entry
The compilation of older studies can be retrieved from the Red Blood Cell Collection database.
The data and differentiation stages presented below come from the proteomic study and analysis performed by our partners of the GReX consortium, more details are available in their published work.
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The reference OMIM entry for this protein is 601082
Ubiquitin-conjugating enzyme e2h; ube2h
Ubiquitin-conjugating enzyme ubc8, yeast, homolog of
Ubch2
Ubiquitin-conjugating enzymes catalyze the covalent attachment of ubiquitin to cellular substrates. Kaiser et al. (1994) isolated a novel ubiquitin-conjugating enzyme from human placenta and cloned the corresponding cDNA. DNA sequencing revealed that this gene, symbolized UBCH2 by them, encodes a protein with significant sequence similarity to yeast UBC8. They discovered that yeast UBC8 is interrupted by a single intron bearing an unusual branch point sequence. The authors noted that yeast UBC8 exhibited 54% amino acid sequence identity to human UBCH2. Moreover, full-length yeast and human enzymes expressed from the cDNAs showed similar enzymatic activities in vitro by catalyzing the ubiquitination of histones, suggesting that the 2 enzymes may fulfill similar functions in vivo. By study of hamster/human hybrid cell DNAs, Kaiser et al. (1994) demonstrated that the human UBC8 gene is located on chromosome 7. Hayashida et al. (2000) constructed a 1-Mb physical and transcript map of 7q32 and mapped UBE2H to a region between D7S530 and D7S649. ... More on the omim web site
Nov. 16, 2018: Protein entry updated
Automatic update: Entry updated from uniprot information.
Feb. 2, 2018: Protein entry updated
Automatic update: Uniprot description updated
Dec. 19, 2017: Protein entry updated
Automatic update: Uniprot description updated
June 20, 2017: Protein entry updated
Automatic update: comparative model was added.
March 16, 2016: Protein entry updated
Automatic update: OMIM entry 601082 was added.
Jan. 28, 2016: Protein entry updated
Automatic update: model status changed
Jan. 25, 2016: Protein entry updated
Automatic update: model status changed