Guo, Li, Zhang et al.: "A functional variant of SUMO4, a new I kappa B alpha modifier, is associated with type 1 diabetes." in: Nature genetics, Vol. 36, Issue 8, pp. 837-41, 2004 (PubMed).
Bohren, Nadkarni, Song et al.: "A M55V polymorphism in a novel SUMO gene (SUMO-4) differentially activates heat shock transcription factors and is associated with susceptibility to type I diabetes mellitus." in: The Journal of biological chemistry, Vol. 279, Issue 26, pp. 27233-8, 2004 (PubMed).
Yang, Sharrocks: "SUMO promotes HDAC-mediated transcriptional repression." in: Molecular cell, Vol. 13, Issue 4, pp. 611-7, 2004 (PubMed).
Ling, Sankpal, Robertson et al.: "Modification of de novo DNA methyltransferase 3a (Dnmt3a) by SUMO-1 modulates its interaction with histone deacetylases (HDACs) and its capacity to repress transcription." in: Nucleic acids research, Vol. 32, Issue 2, pp. 598-610, 2004 (PubMed).
Pountney, Huang, Burns et al.: "SUMO-1 marks the nuclear inclusions in familial neuronal intranuclear inclusion disease." in: Experimental neurology, Vol. 184, Issue 1, pp. 436-46, 2003 (PubMed).
Bailey, OHare: "Characterization of the localization and proteolytic activity of the SUMO-specific protease, SENP1." in: The Journal of biological chemistry, Vol. 279, Issue 1, pp. 692-703, 2003 (PubMed).
Ohshima, Shimotohno: "Transforming growth factor-beta-mediated signaling via the p38 MAP kinase pathway activates Smad-dependent transcription through SUMO-1 modification of Smad4." in: The Journal of biological chemistry, Vol. 278, Issue 51, pp. 50833-42, 2003 (PubMed).