GO:0015607 ABC-type fatty-acyl-CoA transporter activity

GO:0015607, ABC-type fatty-acyl-CoA transporter activity, is a Gene Ontology molecular_function term that captures an ATP-dependent transport reaction: ATP + H2O + fatty acyl CoA(Side 1) = ADP + phosphate + fatty acyl CoA(Side 2). In this reaction, a fatty acyl-CoA molecule, which is any acyl group derived from a fatty acid with coenzyme A attached, is moved from one side of a membrane to the other while ATP is hydrolyzed. Because fatty acyl-CoA molecules are both metabolic intermediates and membrane-active amphiphiles, their controlled distribution is relevant to lipid metabolism, membrane organization, and cellular energy status. The term is part of the broader family of ATP-binding cassette (ABC) transporters and ATPase-coupled transmembrane transporters, and its synonyms include ABC-type fatty-acyl-CoA transporter, ATPase-coupled fatty-acyl-CoA transmembrane transporter activity, fatty-acyl-CoA transmembrane transporter activity, fatty acyl CoA transporter activity, and fatty-acyl-CoA-transporting ATPase. These synonyms reflect the dual nature of the activity: it is both a transporter and an ATPase. For researchers, GO:0015607 provides a precise annotation target when analyzing genomes, transcriptomes, or proteomes for lipid transport functions. Studies of microbial catabolism of organic sulfur compounds such as TDP and DTDP in Ralstonia eutropha H16 used DNA microarrays to detect coordinated changes in transport and lipid-associated gene expression, illustrating how this activity can be investigated in a whole-cell context. Understanding GO:0015607 therefore supports work in microbial physiology, lipid biochemistry, and the development of cell models for transport studies.

In plain terms, GO:0015607 describes a membrane protein activity that uses ATP to push fatty acyl-CoA molecules across a membrane. The QuickGO definition states: Catalysis of the reaction ATP + H2O + fatty acyl CoA(Side 1) = ADP + phosphate + fatty acyl CoA(Side 2). A fatty acyl CoA group is any acyl group derived from a fatty acid with a coenzyme A group attached to it. This means the activity is an ATPase-coupled transporter: ATP hydrolysis provides energy, and the fatty acyl-CoA substrate is translocated from one side of the membrane to the other.

GO:0015607 matters because fatty acyl-CoA molecules sit at the crossroads of fatty acid oxidation, lipid synthesis, and membrane biogenesis, and their transport must be spatially and temporally controlled. When this ATP-dependent transport activity is annotated in a genome or transcriptome, it provides a mechanistic handle on how cells and microbes manage lipid flux. In environmental and industrial microbiology, for example, DNA microarray studies of Ralstonia eutropha H16 exposed to the organic sulfur compounds TDP and DTDP revealed expression changes that include transport and lipid-related functions, showing that this activity can be part of a broader metabolic response. For biomedical researchers, the term is a precise annotation target for investigating lipid homeostasis, membrane trafficking, and ATP-dependent transport mechanisms in health and disease.

The following genes and proteins are representative of the functional context in which ABC-type fatty-acyl-CoA transporter activity (GO:0015607) is studied, based on published literature on microbial catabolism and transport.

The expression and activity of ABC-type fatty-acyl-CoA transporters can be regulated in response to metabolic and environmental conditions. In Ralstonia eutropha H16, DNA microarray experiments showed that exposure to the organic sulfur compounds TDP and DTDP alters the expression of multiple genes, including those associated with transport and lipid-related functions. This indicates that the activity annotated by GO:0015607 is not constitutive but can be tuned by substrate availability, cellular energy status, and stress responses. At the protein level, ATP availability directly controls the reaction because ATP hydrolysis is stoichiometrically coupled to transport. Researchers should therefore consider both transcriptional regulation and metabolic regulation when interpreting experiments on this activity.

Because GO:0015607 controls the distribution of fatty acyl-CoA molecules, altered activity could influence lipid accumulation and energy balance, which are central to metabolic disease biology. Although direct human disease associations for this specific GO term are not established in the verified literature, the term provides a framework for investigating how ATP-dependent fatty acyl-CoA transport contributes to cellular lipid handling.

Fatty acyl-CoA molecules are amphiphilic and can affect membrane properties, so their transport must be tightly controlled to maintain membrane homeostasis. Disruption of transport functions can therefore be expected to impact membrane organization and cellular stress responses, as suggested by expression changes in transport-associated genes under challenging conditions.

In microbes, transport and lipid metabolism genes can be part of adaptive responses to environmental compounds, as shown for Ralstonia eutropha H16 exposed to TDP and DTDP. Understanding GO:0015607 in such contexts may inform studies of microbial survival, biodegradation, and host-microbe interactions.

Direct measurement of GO:0015607 activity can be performed using ATPase assays that detect ATP hydrolysis to ADP and phosphate in the presence of fatty acyl-CoA substrates. Transport assays with labeled fatty acyl-CoA can confirm that the substrate moves from Side 1 to Side 2 of a membrane. These biochemical methods provide the most direct evidence for the annotated activity.

DNA microarray analysis has been used to profile gene expression changes in Ralstonia eutropha H16 during catabolism of TDP and DTDP, revealing coordinated changes in transport and lipid-related functions. Similar transcriptomic approaches can identify when genes associated with GO:0015607 are up- or down-regulated under different conditions. RNA-seq offers higher resolution and broader dynamic range for such studies.

Membrane proteomics can detect the presence and abundance of ABC transporter subunits and accessory proteins. Combining proteomics with transcriptomics helps determine whether changes in transport activity are driven by expression or by post-translational regulation. Such analyses are particularly useful when studying membrane-embedded transporters that are difficult to assay directly.

CRISPR knockout, point mutation, knock-in, and overexpression models allow researchers to test whether a candidate gene is necessary or sufficient for ATP-dependent fatty acyl-CoA transport. These models can be combined with transport assays and omics readouts to establish causal relationships. CRISPR library screening can further identify modifiers of the transport pathway.

Researchers studying ABC-type fatty-acyl-CoA transporter activity-related genes often need to determine whether a candidate gene is causally involved in ATP-dependent lipid transport, and CRISPR-based cell models provide a rigorous way to test necessity and sufficiency. EDITGENE offers a suite of services designed to support such investigations, from knockout and point-mutation models to overexpression and library screening.

GO:0015607, ABC-type fatty-acyl-CoA transporter activity, defines an ATP-dependent transport reaction that moves fatty acyl-CoA molecules across membranes and is therefore central to lipid metabolism and membrane biology. Its precise definition and synonyms make it a valuable annotation target for genomic and transcriptomic studies, as illustrated by DNA microarray analyses of Ralstonia eutropha H16 exposed to TDP and DTDP. By combining biochemical transport assays with CRISPR-based cell models, researchers can rigorously dissect the genes and mechanisms underlying this activity.