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Vacuolar proton translocating ATPase complex, Golgi variant Overview

GO Annotations consist of four mandatory components: a gene product, a term from one of the three Gene Ontology (GO) controlled vocabularies (Molecular Function, Biological Process, and Cellular Component), a reference, and an evidence code.

Summary
Translocates protons across a lipid bilayer via an ATP-driven rotary mechanism, thus acidifing the lumen of its resident organelle. As newly synthesized proteins traverse the Golgi apparatus they undergo post-translational modifications, including glycosylation, sulfation, and phosphorylation, and are targeted to their appropriate destination in a pH-dependent manner. Membrane-bound ion transporters/proton exchangers use the pH gradient to sequester metal ions to the vacuole and other cellular organelles. The combined action of the V-ATPase and membrane transporters plays a key role in maintaining cellular homoeostasis. The variant of the complex containing the STV1 subunit results in the retention of the V-ATPase complex on Golgi and endosomal membranes. The N-terminal domain of STV1 contains the W83KY sequence, which is necessary and sufficient for targeting the complex to the Golgi apparatus. When yeast cells are deprived of glucose, the V1 and VO regions separate and are no longer able to hydrolyze ATP and transport protons.
GO Slim Terms

The yeast GO Slim terms are higher level terms that best represent the major S. cerevisiae biological processes, functions, and cellular components. The GO Slim terms listed here are the broader parent terms for the specific terms to which this gene product is annotated, and thus represent the more general processes, functions, and components in which it is involved.

transmembrane transporter activity, homeostatic process, intracellular monoatomic ion homeostasis, monoatomic ion transport, transmembrane transport, transport, membrane

Biological Process

Manually curated GO annotations reflect our best understanding of the basic biological process for this protein complex. Manually curated annotations are assigned by curators based on published papers when available, or by curatorial statements if necessary. Curators periodically review all manually curated GO annotations for accuracy and completeness.

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Qualifier Gene Ontology Term Annotation Extension Evidence Source Assigned On Reference

Molecular Function

Manually curated GO annotations reflect our best understanding of the basic molecular function for this protein complex. Manually curated annotations are assigned by curators based on published papers when available, or by curatorial statements if necessary. Curators periodically review all manually curated GO annotations for accuracy and completeness.

Increase the total number of rows showing on this page using the pull-down located below the table, or use the page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table.

Qualifier Gene Ontology Term Annotation Extension Evidence Source Assigned On Reference

Cellular Component

Manually curated GO annotations reflect our best understanding of the basic cellular component for this protein complex. Manually curated annotations are assigned by curators based on published papers when available, or by curatorial statements if necessary. Curators periodically review all manually curated GO annotations for accuracy and completeness.

Increase the total number of rows showing on this page using the pull-down located below the table, or use the page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table.

Qualifier Gene Ontology Term Annotation Extension Evidence Source Assigned On Reference

Shared Annotations

This diagram displays Gene Ontology terms (green) that are shared between the given macromolecular complex (black) and other yeast complexes (yellow). Note: No diagram is shown ("No shared annotations") if there are less than 2 shared GO annotations between this complex and any other complexes.