SUMO3 Conjugation Kit

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SUMO3 Conjugation Kit Summary

Human Small Ubiquitin-like Modifier 3 (SUMO3), also known as SMT3A, is synthesized as a 103 amino acid (aa), propeptide with a predicted 11.5 kDa. SUMO3 contains a two aa C-terminal prosegment. Human SUMO3 shares 83% sequence identity with mouse SUMO3. SUMO3 also has high aa sequence homology to SUMO2 and SUMO4, 87% and 75%, respectively. SUMO3 shares only 47% sequence identity with SUMO1. SUMOs are a family of small, related proteins that can be enzymatically attached to a target protein by a post-translational modification process termed SUMOylation. All SUMO proteins share a conserved Ubiquitin domain and a C-terminal diglycine cleavage/attachment site. Following prosegment cleavage, the C-terminal glycine residue of SUMO3 is enzymatically attached to a lysine residue on a target protein. In humans, SUMO3 is conjugated to a variety of molecules in the presence of the SAE1/UBA2 SUMO-activating (E1) enzyme and the UBE2I/Ubc9 SUMO-conjugating (E2) enzyme. In yeast, the SUMO-activating (E1) enzyme is Aos1/Uba2p. Because of the high level of sequence homology most studies report effects of SUMO2/3. For example, addition of SUMO2/3 was shown to modulate the function of ARHGAP21, a RhoGAP protein known to be involved in cell migration. Other reports indicate that the conjugation by SUMO2/3, but not SUMO1, may represent an important mechanism to protect neurons during episodes of cerebral ischemia. However, studies suggest that SUMO2/3 expression is regulated in an isoform-specific manner since oxidative stress downregulated the transcription of SUMO3 but not SUMO2.


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The product is shipped with dry ice or equivalent. Upon receipt, store it immediately at the temperature recommended below.
Store the unopened product at -70 °C. Use a manual defrost freezer and avoid repeated freeze-thaw cycles. Do not use past expiration date.

Product Datasheets

Background: SUMO3

Long Name
Small Ubiquitin-like Modifier 3
Entrez Gene IDs
6612 (Human)
Alternate Names
SMT3 (suppressor of mif two 3, yeast) homolog 1; SMT3 homolog 1; SMT3 suppressor of mif two 3 homolog 1; SMT3 suppressor of mif two 3 homolog 3 (S. cerevisiae); SMT3 suppressor of mif two 3 homolog 3 (yeast); SMT3A; SMT3B; SMT3H1; SMT3H1small ubiquitin-related modifier 3; SUMO-2; SUMO3; SUMO-3; ubiquitin-like protein SMT3A; Ubiquitin-like protein SMT3B

Citation for SUMO3 Conjugation Kit

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

1 Citation: Showing 1 - 1

  1. Sequential posttranslational modifications program FEN1 degradation during cell-cycle progression.
    Authors: Guo Z, Kanjanapangka J, Liu N, Liu S, Liu C, Wu Z, Wang Y, Loh T, Kowolik C, Jamsen J, Zhou M, Truong K, Chen Y, Zheng L, Shen B
    Mol Cell, 2012;47(3):444-56.  2012


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