Any process that modulates the frequency, rate or extent of the chemical reactions and pathways involving pyrimidine nucleobases.

Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways involving pyrimidine nucleobases.

Any process that stops, prevents, or reduces the frequency, rate or extent of smooth muscle contraction.

The chemical reactions and pathways that result in the breakdown of macromolecules that form part of a cell wall, and contributes to the breakdown of the cell wall.

The nucleotide-excision repair process in which DNA lesions are removed from nontranscribed strands and from transcriptionally silent regions over the entire genome.

A heterodimeric nucleotide-excision repair complex that is involved in transcription-coupled repair. The subunits are known as Ddb1 and Ckn1 in S. pombe; Ddb1 contains a motif called the DDB-box that interacts with adaptor proteins for DDB1/cullin 4 ubiquitin ligases.

A heterodimeric nucleotide-excision repair complex that is involved in transcription-coupled repair. The subunits are known as Ddb1 and Wdr21 in S. pombe; Ddb1 contains a motif called the DDB-box that interacts with adaptor proteins for DDB1/cullin 4 ubiquitin ligases.

A DNA repair process that is initiated by an endonuclease that introduces a single-strand incision immediately 5' of a UV-induced damage site. UV-damage excision repair acts on both cyclobutane pyrimidine dimers (CPDs) and pyrimidine-pyrimidone 6-4 photoproducts (6-4PPs).

Combining with the phospholipid derivative lysophosphatidic acid, and transmitting the signal across the membrane by activating an associated G-protein.

The synthesis of RNA from a mitochondrial DNA template, usually by a specific mitochondrial RNA polymerase.

A protein complex that possesses inositol phosphoceramide synthase activity and contains a catalytic subunit and a regulatory subunit (Aur1p and Kei1p, respectively, in Saccharomyces).

A transcription initiation process that takes place at a promoter on the mitochondrial chromosome.

Binds to and modulates the activity of inositol phosphoceramide synthase.

The extension of an RNA molecule after transcription initiation and promoter clearance at mitochondrial promoter by the addition of ribonucleotides catalyzed by a mitchondrial RNA polymerase.

A transcription termination process that completes the production of a primary mitochondrial transcript.

Any protein complex that mediates the effects of small interfering RNAs on gene expression. Most known examples contain one or more members of the Argonaute family of proteins.

Any mRNA 3'-end processing that involves the binding to and cleavage of a stem-loop structure. For example, histone mRNAs contain a highly conserved stem-loop sequence at the 3' end of the mRNA with a 6 base pairs (bp) stem and a 4-nt loop. The mRNA is cleaved between these two elements, after the fourth or fifth nucleotide, which is typically an adenosine.

The chemical reactions and pathways involving an mRNA encoding a histone.