AUS1 ATP-binding cassette sterol transporter AUS1 [Saccharomyces cerevisiae S288C] - Gene

Summary

Official Symbol: AUS1
Official Full Name: ATP-binding cassette sterol transporter AUS1
Primary source: SGD:S000005537
Locus tag: YOR011W
See related: AllianceGenome:SGD:S000005537; FungiDB:YOR011W; VEuPathDB:YOR011W
Gene type: protein coding
RefSeq status: REVIEWED
Organism: Saccharomyces cerevisiae S288C (strain: S288C)
Lineage: Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes; Saccharomycetales; Saccharomycetaceae; Saccharomyces
Summary: Enables ABC-type sterol transporter activity. Involved in sterol import. Located in plasma membrane. [provided by Alliance of Genome Resources, Dec 2024]
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Chromosome XV - NC_001147.6 Genomic Context describing neighboring genes

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Mutations in the nucleotide-binding domain of putative sterol importers Aus1 and Pdr11 selectively affect utilization of exogenous sterol species in yeast.
Title: Mutations in the nucleotide-binding domain of putative sterol importers Aus1 and Pdr11 selectively affect utilization of exogenous sterol species in yeast.
Are2p, Aus1p, and Pdr11p, unlike the minor acyltransferase, Are1p, colocalize to sterol and sphingolipid-enriched, detergent-resistant microdomains (DRMs).
Title: ATP-binding cassette transporters and sterol O-acyltransferases interact at membrane microdomains to modulate sterol uptake and esterification.
there is a direct interaction between Aus1 and phosphatidylserien that is critical for the activity of the transporter
Title: The yeast plasma membrane ATP binding cassette (ABC) transporter Aus1: purification, characterization, and the effect of lipids on its activity.
the entry of sterol molecules into plasma membrane is not spontaneous but requires assistance of two ABC (ATP-binding cassette) pumps--Aus1p or Pdr11p.
Title: The role of ABC proteins Aus1p and Pdr11p in the uptake of external sterols in yeast: dehydroergosterol fluorescence study.
Aus1 and Pdr11 are required for sterol uptake.
Title: Tritium suicide selection identifies proteins involved in the uptake and intracellular transport of sterols in Saccharomyces cerevisiae.

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

Function	Evidence Code	Pubs
enables ABC-type sterol transporter activity	IMP Inferred from Mutant Phenotype more info	PubMed
enables ABC-type transporter activity	IEA Inferred from Electronic Annotation more info
enables ATP binding	IEA Inferred from Electronic Annotation more info
enables ATP hydrolysis activity	IEA Inferred from Electronic Annotation more info

Process	Evidence Code	Pubs
involved_in sterol import	IGI Inferred from Genetic Interaction more info	PubMed
involved_in sterol import	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in transmembrane transport	IEA Inferred from Electronic Annotation more info

Component	Evidence Code	Pubs
located_in cell periphery	HDA more info	PubMed
located_in membrane	IEA Inferred from Electronic Annotation more info
located_in mitochondrion	HDA more info	PubMed
located_in plasma membrane	IDA Inferred from Direct Assay more info	PubMed
located_in plasma membrane	IEA Inferred from Electronic Annotation more info

NP_014654.1

Plasma membrane sterol transporter of the ATP-binding cassette family; required, along with Pdr11p, for uptake of exogenous sterols and their incorporation into the plasma membrane; activity is stimulated by phosphatidylserine; sterol uptake is required for anaerobic growth because sterol biosynthesis requires oxygen; AUS1 has a paralog, PDR11, that arose from the whole genome duplication

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