Liver-type fatty acid binding protein interacts with hepatocyte nuclear factor 4α. 2013

Avery L McIntosh, and Anca D Petrescu, and Heather A Hostetler, and Ann B Kier, and Friedhelm Schroeder
Department of Physiology and Pharmacology, Texas A&M University, TVMC, College Station, TX 77843-4466, United States.

Hepatocyte nuclear factor 4α (HNF4α) regulates liver type fatty acid binding protein (L-FABP) gene expression. Conversely as shown herein, L-FABP structurally and functionally also interacts with HNF4α. Fluorescence resonance energy transfer (FRET) between Cy3-HNF4α (donor) and Cy5-L-FABP (acceptor) as well as FRET microscopy detected L-FABP in close proximity (~80 Å) to HNF4α, binding with high affinity Kd ~250-300 nM. Circular dichroism (CD) determined that the HNF4α/L-FABP interaction altered protein secondary structure. Finally, L-FABP potentiated transactivation of HNF4α in COS7 cells. Taken together, these data suggest that L-FABP provides a signaling path to HNF4α activation in the nucleus.

UI MeSH Term Description Entries
D011485 Protein Binding The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments. Plasma Protein Binding Capacity,Binding, Protein
D002522 Chlorocebus aethiops A species of CERCOPITHECUS containing three subspecies: C. tantalus, C. pygerythrus, and C. sabeus. They are found in the forests and savannah of Africa. The African green monkey is the natural host of SIMIAN IMMUNODEFICIENCY VIRUS and is used in AIDS research. African Green Monkey,Cercopithecus aethiops,Cercopithecus griseoviridis,Cercopithecus griseus,Cercopithecus pygerythrus,Cercopithecus sabeus,Cercopithecus tantalus,Chlorocebus cynosuros,Chlorocebus cynosurus,Chlorocebus pygerythrus,Green Monkey,Grivet Monkey,Lasiopyga weidholzi,Malbrouck,Malbrouck Monkey,Monkey, African Green,Monkey, Green,Monkey, Grivet,Monkey, Vervet,Savanah Monkey,Vervet Monkey,Savannah Monkey,African Green Monkey,Chlorocebus cynosuro,Green Monkey, African,Green Monkeys,Grivet Monkeys,Malbrouck Monkeys,Malbroucks,Monkey, Malbrouck,Monkey, Savanah,Monkey, Savannah,Savannah Monkeys,Vervet Monkeys
D005786 Gene Expression Regulation Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control (induction or repression) of gene action at the level of transcription or translation. Gene Action Regulation,Regulation of Gene Expression,Expression Regulation, Gene,Regulation, Gene Action,Regulation, Gene Expression
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D017433 Protein Structure, Secondary The level of protein structure in which regular hydrogen-bond interactions within contiguous stretches of polypeptide chain give rise to ALPHA-HELICES; BETA-STRANDS (which align to form BETA-SHEETS), or other types of coils. This is the first folding level of protein conformation. Secondary Protein Structure,Protein Structures, Secondary,Secondary Protein Structures,Structure, Secondary Protein,Structures, Secondary Protein
D045744 Cell Line, Tumor A cell line derived from cultured tumor cells. Tumor Cell Line,Cell Lines, Tumor,Line, Tumor Cell,Lines, Tumor Cell,Tumor Cell Lines
D050556 Fatty Acid-Binding Proteins Intracellular proteins that reversibly bind hydrophobic ligands including: saturated and unsaturated FATTY ACIDS; EICOSANOIDS; and RETINOIDS. They are considered a highly conserved and ubiquitously expressed family of proteins that may play a role in the metabolism of LIPIDS. Fatty Acid-Binding Protein,Adipocyte Lipid Binding Protein,Adipocyte-Specific Fatty Acid-Binding Protein,Brain-Type Fatty Acid-Binding Protein,Cytosolic Lipid-Binding Proteins,Fatty Acid-Binding Protein, Cardiac Myocyte,Fatty Acid-Binding Protein, Myocardial,Fatty Acid-Binding Proteins, Adipocyte-Specific,Fatty Acid-Binding Proteins, Brain-Specific,Fatty Acid-Binding Proteins, Cytosolic-Specific,Fatty Acid-Binding Proteins, Intestinal-Specific,Fatty Acid-Binding Proteins, Liver-Specific,Fatty Acid-Binding Proteins, Myocardial-Specific,Fatty Acid-Binding Proteins, Plasma-Membrane Specific,Intestinal Fatty Acid-Binding Protein,Liver Fatty Acid-Binding Protein,Myocardial Fatty Acid-Binding Protein,Plasma Membrane Fatty Acid-Binding Protein,Acid-Binding Protein, Fatty,Adipocyte Specific Fatty Acid Binding Protein,Brain Type Fatty Acid Binding Protein,Cytosolic Lipid Binding Proteins,Fatty Acid Binding Protein,Fatty Acid Binding Protein, Cardiac Myocyte,Fatty Acid Binding Protein, Myocardial,Fatty Acid Binding Proteins,Fatty Acid Binding Proteins, Adipocyte Specific,Fatty Acid Binding Proteins, Brain Specific,Fatty Acid Binding Proteins, Cytosolic Specific,Fatty Acid Binding Proteins, Intestinal Specific,Fatty Acid Binding Proteins, Liver Specific,Fatty Acid Binding Proteins, Myocardial Specific,Fatty Acid Binding Proteins, Plasma Membrane Specific,Intestinal Fatty Acid Binding Protein,Lipid-Binding Proteins, Cytosolic,Liver Fatty Acid Binding Protein,Myocardial Fatty Acid Binding Protein,Plasma Membrane Fatty Acid Binding Protein,Protein, Fatty Acid-Binding
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus
D051557 Hepatocyte Nuclear Factor 4 A subfamily of nuclear receptors that regulate GENETIC TRANSCRIPTION of a diverse group of GENES involved in the synthesis of BLOOD COAGULATION FACTORS; and in GLUCOSE; CHOLESTEROL; and FATTY ACIDS metabolism. HNF4 Transcription Factor,Hepatocyte Nuclear Factor 4-alpha,Hepatocyte Nuclear Factor 4-beta,Hepatocyte Nuclear Factor 4-gamma,Hepatocyte Nuclear Factor-Forkhead Homolog 4,Nuclear Receptor Subfamily 2 Group A, Member 2,Nuclear Receptor Subfamily 2, Group A, Member 1,Hepatocyte Nuclear Factor 4 alpha,Hepatocyte Nuclear Factor 4 beta,Hepatocyte Nuclear Factor 4 gamma,Hepatocyte Nuclear Factor Forkhead Homolog 4,Transcription Factor, HNF4
D019556 COS Cells CELL LINES derived from the CV-1 cell line by transformation with a replication origin defective mutant of SV40 VIRUS, which codes for wild type large T antigen (ANTIGENS, POLYOMAVIRUS TRANSFORMING). They are used for transfection and cloning. (The CV-1 cell line was derived from the kidney of an adult male African green monkey (CHLOROCEBUS AETHIOPS).) COS-1 Cells,COS-7 Cells,COS 1 Cells,COS 7 Cells,COS Cell,COS-1 Cell,COS-7 Cell,Cell, COS,Cell, COS-1,Cell, COS-7,Cells, COS,Cells, COS-1,Cells, COS-7

Related Publications

Avery L McIntosh, and Anca D Petrescu, and Heather A Hostetler, and Ann B Kier, and Friedhelm Schroeder
October 2010, The FEBS journal,
Avery L McIntosh, and Anca D Petrescu, and Heather A Hostetler, and Ann B Kier, and Friedhelm Schroeder
May 2022, Chinese medical journal,
Avery L McIntosh, and Anca D Petrescu, and Heather A Hostetler, and Ann B Kier, and Friedhelm Schroeder
October 2020, Hepatology (Baltimore, Md.),
Avery L McIntosh, and Anca D Petrescu, and Heather A Hostetler, and Ann B Kier, and Friedhelm Schroeder
November 2014, Hepatology (Baltimore, Md.),
Avery L McIntosh, and Anca D Petrescu, and Heather A Hostetler, and Ann B Kier, and Friedhelm Schroeder
October 2022, Life (Basel, Switzerland),
Avery L McIntosh, and Anca D Petrescu, and Heather A Hostetler, and Ann B Kier, and Friedhelm Schroeder
March 1994, Biochemistry,
Avery L McIntosh, and Anca D Petrescu, and Heather A Hostetler, and Ann B Kier, and Friedhelm Schroeder
April 2020, FASEB journal : official publication of the Federation of American Societies for Experimental Biology,
Avery L McIntosh, and Anca D Petrescu, and Heather A Hostetler, and Ann B Kier, and Friedhelm Schroeder
June 2013, Journal of digestive diseases,
Avery L McIntosh, and Anca D Petrescu, and Heather A Hostetler, and Ann B Kier, and Friedhelm Schroeder
October 2011, Blood coagulation & fibrinolysis : an international journal in haemostasis and thrombosis,
Avery L McIntosh, and Anca D Petrescu, and Heather A Hostetler, and Ann B Kier, and Friedhelm Schroeder
July 2011, Biochemical and biophysical research communications,
Copied contents to your clipboard!