Part:BBa_K4165011

UBE2N

Ubiquitin-conjugating E2 ligase that has a role in the ubiquitination cascade for protein degradation.

Usage and Biology

This part encodes for the UBE2N enzyme which is a member of the E2 ubiquitin-conjugating enzyme family. It acts as the second enzyme in the ubiquitination cascade to receive the thio-esterified ubiquitin from the E1 active site. The cascade starts with UBE2W being one of the few E2 types which binds to Trim21 (E3 ligase) and this specificity for trim21 is due to the presence of RING domain at which UBE2W is specific to. The next step is the formation of UBE2N/UBE2V2 complex which function in the chain building and extending poly-ubiquitin chains from the mono-ubiquitinated proteins by UBE2W. This protein may also be involved in DNA post replication repair according to studies that have been done on mice.

Sequence and Features

Assembly Compatibility:

• 10
  COMPATIBLE WITH RFC[10]
• 12
  COMPATIBLE WITH RFC[12]
• 21
  INCOMPATIBLE WITH RFC[21]

  Illegal BglII site found at 221
  
• 23
  COMPATIBLE WITH RFC[23]
• 25
  COMPATIBLE WITH RFC[25]
• 1000
  COMPATIBLE WITH RFC[1000]

Wet-Lab Results

Transformation of His UBE2N in BL-21 using pGS-21a vector

                                 Figure 1. Transformed plate of His UBE2N + pGS-21a

Transformation of His UBE2N in DH-5 alpha using pJET vector

                                Figure 2. Transformed plate of His UBE2N + pJET

Refrences

1. UBE2N ubiquitin conjugating enzyme E2 N [Homo sapiens (human)] - Gene - NCBI. (2022). 2. Pharos: Ubiquitin-conjugating enzyme E2 N (Tchem). (2022). 3. Kleiger, G., & Mayor, T. (2014). Perilous journey: a tour of the ubiquitin-proteasome system. Trends in cell biology, 24(6), 352-359. 3. Vittal, V., Wenzel, D. M., Brzovic, P. S., & Klevit, R. E. (2013). Biochemical and structural characterization of the ubiquitin-conjugating enzyme UBE2W reveals the formation of a noncovalent homodimer. Cell biochemistry and biophysics, 67(1), 103-110.