Small ubiquitin-related modifier; Ubiquitin-like protein which can be covalently attached to target lysines as a monomer. Does not seem to be involved in protein degradation and may function as an antagonist of ubiquitin in the degradation process. Plays a role in a number of cellular processes such as nuclear transport, DNA replication and repair, mitosis and signal transduction. Covalent attachment to its substrates requires prior activation by the E1 complex aos-1-uba-2 and linkage to the E2 enzyme ubc-9, and can be promoted by an E3 ligase such as gei-17. Required for embryonic dev [...]

Hydroxymethylglutaryl-CoA synthase; This enzyme condenses acetyl-CoA with acetoacetyl-CoA to form HMG-CoA, which is the substrate for HMG-CoA reductase.

SUMO-conjugating enzyme UBC9; Accepts the ubiquitin-like protein smo-1 from the aos-1-uba-2 E1 complex and catalyzes its covalent attachment to other proteins with the help of an E3 ligase such as gei-17. Required to sumoylate the ETS transcription factor lin-1 and the Polycomb protein sop-2. Required for embryonic development, fertility, vulval morphogenesis and inhibition of vulval cell fates. Belongs to the ubiquitin-conjugating enzyme family.

E3 SUMO-protein ligase gei-17; Functions as an E3-type smo-1 ligase. Mediates smo-1 conjugation to air-2 in vitro and is required for proper chromosome alignment. In the early embryo, specifically suppresses checkpoint activation in response to DNA damage, maybe by promoting mus-101 sumoylation. In embryos, plays a role in determining telomere localization in the nucleus.

UBX domain-containing protein 3; Ubiquitin-binding protein which acts as an adapter for ATPase cdc-48.1 and/or cdc-48.2, conferring substrate specificity. Together with ubxn-1 and ubxn-2, plays a role in hermaphrodite spermatogenesis probably by promoting the degradation of sex determination terminal factor tra-1. During mitosis, ensures the degradation of DNA licensing factor cdt-1 and the disassembly of the DNA replication CMG helicase complex by promoting the dissociation from chromatin of several of its components including cdc-45 and sld-5.

ULP_PROTEASE domain-containing protein.

Homeobox domain-containing protein.

SUMO-activating enzyme subunit aos-1; The dimeric enzyme acts as an E1 ligase for smo-1. It mediates ATP-dependent activation of smo-1 and formation of a thioester with a conserved cysteine residue on uba-2 (Probable).

Ubiquitin fusion degradation protein 1 homolog; Functions at a post-ubiquitination step in the ubiquitin fusion degradation (UFD) pathway (By similarity). In association with npl-4.1 and/or npl-4.2 and ATPase cdc-48.1 and/or cdc-48.2, involved in the cytoplasmic elimination of misfolded proteins exported from the ER. This pathway, known as ERAD, prevents the activation of the unfolded protein response (UPR) caused by the accumulation of misfolded proteins in the ER. During S phase and in association with npl-4.1 and/or npl-4.2, cdc-48.1 and/or cdc-48.2 and ubxn-3, ensures the degradati [...]