A protein complex that acts as a two-component GTPase-activating protein for Tem1 GTPase, thus regulating a signal transduction cascade, called the mitotic exit network (MEN), which is required for mitotic exit and cytokinesis. Bub2/Bfa1 keeps Tem1 inactive until the spindle is properly oriented, thus inhibiting MEN activation.

A protein complex which is capable of GTPase activator activity.

A type-I transmembrane protein complex located in the endoplasmic reticulum (ER) consisting of an IRE1-IRE1 dimer, which forms in response to the accumulation of unfolded protein in the ER. The dimeric complex has endoribonuclease (RNase) activity and evokes the unfolded protein response (UPR) by cleaving an intron of a mRNA coding for the transcription factor HAC1 in yeast or XBP1 in mammals; the complex cleaves a single phosphodiester bond in each of two RNA hairpins (with non-specific base paired stems and loops of consensus sequence CNCNNGN, where N is any base) to remove an intervening intron from the target transcript.

A protein complex which is capable of endoribonuclease activity.

A protein complex involved in the spindle checkpoint, preventing the activation of the anaphase-promoting complex until all chromosomes are correctly attached in a bipolar fashion to the mitotic spindle. In budding yeast this complex consists of Mad2p and Cdc20p, and in mammalian cells it consists of MAD2 and CDC20.

A heterotetrameric protein complex involved in the sulfur transfer during iron-sulfur cluster assembly and in the modification of tRNA wobble positions. In E. coli it consisting of a central IscS dimer with the IscU protomers attached to one of the IscS units each via a disulfide (-SSH) group.

A tetrameric protein complex capable of acetyltransferase activity. It can catalyze the transfer of an acetyl group from acetyl-CoA to an acceptor residue on histone H-3, histone H-4, or on polyamines. The complex is also capable of acetylating certain small basic proteins. The two Hpa2 dimers that make up the tetramer are held together by interactions between the bound acetyl-CoA molecules.

A multisubunit complex that catalyzes the acetylation of histone H3.

Transmembrane complex that mediates resistance to copper and silver by cation efflux directly from the cell using the proton-motive force. Spans the inner membrane, periplasm, and outer membrane. Primarily activated under anaerobic conditions by CusR and CusS but also expressed under extreme copper stress, in aerobic growth.

A protein complex which is capable of copper ion transmembrane transporter activity.

A protein complex which is capable of silver ion transmembrane transporter activity.

The regrowth of lost or destroyed epithelium.

The regrowth of lost or destroyed tissues.

The process whose specific outcome is the progression of an epithelium over time, from its formation to the mature structure. An epithelium is a tissue that covers the internal or external surfaces of an anatomical structure.

The error-free repair of a single-strand break in DNA in which the broken DNA molecule is repaired using homologous sequences. A strand in the broken DNA searches for a homologous region in an intact chromosome to serve as the template for DNA synthesis. The restoration of two intact DNA molecules results in the exchange, reciprocal or nonreciprocal, of genetic material between the intact DNA molecule and the broken DNA molecule.

The repair of single strand breaks in DNA. Repair of such breaks is mediated by the same enzyme systems as are used in base excision repair.

The conversion of DNA-damage induced single-stranded gaps into large molecular weight DNA via processes such as template switching, which does not remove the replication-blocking lesions but does not increase the endogenous mutation rate.

A DNA repair process that involves the exchange, reciprocal or nonreciprocal, of genetic material between the broken DNA molecule and a homologous DNA region.

Any process which produces queuosine from derivatives of it, without de novo synthesis.