Abstract
Intracellular lipid-binding proteins are a family of low-molecular- weight single-chain polypeptides that form 1:1 complexes with fatty acids, retinoids, or other hydrophobic ligands. These proteins are products of a large multigene family of unlinked loci distributed throughout the genome. Each lipid-binding proteins exhibits a distinctive pattern of tissue distribution. Transcriptional control, regulated by a combination of peroxisome proliferator activated receptors and CCAAT/enhancer-binding proteins, allows for a variety of both cell and tissue-specific expression patterns. In some cells, fatty acids increase the expression of the lipid- binding protein genes. Fatty acids, or their metabolites, are activators of the peroxisome proliferator-activated receptor family of transcription factors. Therefore, as the concentration of lipid in the diet increases, the expression of lipid-binding proteins coordinately increase. As revealed by X- ray crystallography, the lipid-binding proteins fold into β-barrels, forming a large internal water-filled cavity. Fatty acid ligands are bound within the cavity, occupying only about one-third of the accessible volume. The bound fatty acid is stabilized via a combination of enthalpic and entropic forces that govern ligand affinity and selectivity. Cytoplasmic lipid-binding proteins are the intracellular receptors for hydrophobic ligands, delivering them to the appropriate site for use as metabolic fuels and regulatory agents.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 277-303 |
| Number of pages | 27 |
| Journal | Annual Review of Nutrition |
| Volume | 17 |
| DOIs | |
| State | Published - Aug 19 1997 |
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Keywords
- Carrier proteins
- Dietary fat
- Fatty acids
- Gene expression
- Peroxisome proliferator-activated receptors
ASJC Scopus subject areas
- Medicine (miscellaneous)
- Nutrition and Dietetics
Cite this
Intracellular lipid-binding proteins and their genes. / Bernlohr, David A.; Simpson, Melanie A.; Hertzel, Ann Vogel; Banaszak, Leonard J.
In: Annual Review of Nutrition, Vol. 17, 19.08.1997, p. 277-303.Research output: Contribution to journal › Review article
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TY - JOUR
T1 - Intracellular lipid-binding proteins and their genes
AU - Bernlohr, David A.
AU - Simpson, Melanie A.
AU - Hertzel, Ann Vogel
AU - Banaszak, Leonard J.
PY - 1997/8/19
Y1 - 1997/8/19
N2 - Intracellular lipid-binding proteins are a family of low-molecular- weight single-chain polypeptides that form 1:1 complexes with fatty acids, retinoids, or other hydrophobic ligands. These proteins are products of a large multigene family of unlinked loci distributed throughout the genome. Each lipid-binding proteins exhibits a distinctive pattern of tissue distribution. Transcriptional control, regulated by a combination of peroxisome proliferator activated receptors and CCAAT/enhancer-binding proteins, allows for a variety of both cell and tissue-specific expression patterns. In some cells, fatty acids increase the expression of the lipid- binding protein genes. Fatty acids, or their metabolites, are activators of the peroxisome proliferator-activated receptor family of transcription factors. Therefore, as the concentration of lipid in the diet increases, the expression of lipid-binding proteins coordinately increase. As revealed by X- ray crystallography, the lipid-binding proteins fold into β-barrels, forming a large internal water-filled cavity. Fatty acid ligands are bound within the cavity, occupying only about one-third of the accessible volume. The bound fatty acid is stabilized via a combination of enthalpic and entropic forces that govern ligand affinity and selectivity. Cytoplasmic lipid-binding proteins are the intracellular receptors for hydrophobic ligands, delivering them to the appropriate site for use as metabolic fuels and regulatory agents.
AB - Intracellular lipid-binding proteins are a family of low-molecular- weight single-chain polypeptides that form 1:1 complexes with fatty acids, retinoids, or other hydrophobic ligands. These proteins are products of a large multigene family of unlinked loci distributed throughout the genome. Each lipid-binding proteins exhibits a distinctive pattern of tissue distribution. Transcriptional control, regulated by a combination of peroxisome proliferator activated receptors and CCAAT/enhancer-binding proteins, allows for a variety of both cell and tissue-specific expression patterns. In some cells, fatty acids increase the expression of the lipid- binding protein genes. Fatty acids, or their metabolites, are activators of the peroxisome proliferator-activated receptor family of transcription factors. Therefore, as the concentration of lipid in the diet increases, the expression of lipid-binding proteins coordinately increase. As revealed by X- ray crystallography, the lipid-binding proteins fold into β-barrels, forming a large internal water-filled cavity. Fatty acid ligands are bound within the cavity, occupying only about one-third of the accessible volume. The bound fatty acid is stabilized via a combination of enthalpic and entropic forces that govern ligand affinity and selectivity. Cytoplasmic lipid-binding proteins are the intracellular receptors for hydrophobic ligands, delivering them to the appropriate site for use as metabolic fuels and regulatory agents.
KW - Carrier proteins
KW - Dietary fat
KW - Fatty acids
KW - Gene expression
KW - Peroxisome proliferator-activated receptors
UR - http://www.scopus.com/inward/record.url?scp=0030837971&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030837971&partnerID=8YFLogxK
U2 - 10.1146/annurev.nutr.17.1.277
DO - 10.1146/annurev.nutr.17.1.277
M3 - Review article
C2 - 9240929
AN - SCOPUS:0030837971
VL - 17
SP - 277
EP - 303
JO - Annual Review of Nutrition
JF - Annual Review of Nutrition
SN - 0199-9885
ER -