8608126

Source:http://linkedlifedata.com/resource/pubmed/id/8608126

Download in:

Switch to

Custom View

Named Graph Language Inference

Statements in which the resource exists as a subject.
Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0017262, umls-concept:C0022567, umls-concept:C0033684, umls-concept:C0178719, umls-concept:C0185117, umls-concept:C0814995, umls-concept:C0936012, umls-concept:C1514559, umls-concept:C1709160, umls-concept:C1998793, umls-concept:C2911684
pubmed:issue	9
pubmed:dateCreated	1996-5-28
pubmed:abstractText	The keratinocyte lipid-binding protein (KLBP) has been identified on the basis of nucleotide sequence analysis of its cloned cDNA as a new member of the intracellular lipid-binding protein (iLBP) multigene family. To characterize KLBP and determine its ligand-binding properties, its cDNA was subcloned into Escherichia coli, and the protein was overexpressed and purified to homogeneity by a combination of acid extraction, gel permeation, and ion-exchange chromatographies. Purified KLBP exhibited high-affinity binding of the fluorescent hydrophobic probe 1-anilinonaphthalene-8-sulfonate (1,8-ANS), displaying an apparent dissociation constant of 390 +/- 90 nM (n = 0.74 +/- 0.2). Using an assay based upon displacement of the bound fluorophore, KLBP was found to bind long chain fatty acids most avidly; oleic acid (18:1) bound with an apparent Kd of 248 +/- 12 nM, and arachidonic acid (20:4) exhibited a dissociation constant of 318 +/- 14 nM. As the length of the fatty acid decreased, the binding affinity was reduced; myristic acid (14:0) bound with a K(d) of 1409 +/- 423 nM, but medium-chain (decanoic acid, 10:0) and short-chain (octanoic acid, 8:0) lipids were not bound at all. The protein did not bind prostaglandin E2 with any measurable affinity but did associate with eicosanoids such as 5-hydroperoxyeicosatetraenoic acid (5-HPETE; K(d) of 848 +/- 211 nM) and 15-HPETE (Kd of 463 +/- 243 nM) and to a lesser extent their hydroxy derivatives, 5-HETE and 15-HETE (Kd of 1560 +/- 115 nM and greater than 4 microM, respectively). all-trans-Retinoic acid was a weak ligand for KLBP, binding with a Kd of 3600 nM, and all-trans-retinol did not displace 1,8-ANS. Molecular modeling of the KLBP sequence upon the X-ray crystal structures of several iLBP's suggested that the side chains of one or more cysteine residues may reside within the putative ligand-binding cavity. Consistent with this, sulfhydryl titration of purified KLBP with 5,5'-dithiobis(2-nitrobenzoic acid) at pH 8.0 in the presence and absence of oleic acid revealed that at least one residue was protected from modification by the fatty acid. These results describe the first purification and characterization of the ligand-binding properties of KLBP and indicate that the protein is a fatty acid binding protein with a tertiary structure likely to be similar to other members of the iLBP multigene family.
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/0370623
pubmed:citationSubset	IM
pubmed:chemical	http://linkedlifedata.com/resource/pubmed/chemical/1-anilino-8-naphthalenesulfonate, http://linkedlifedata.com/resource/pubmed/chemical/Anilino Naphthalenesulfonates, http://linkedlifedata.com/resource/pubmed/chemical/Carrier Proteins, http://linkedlifedata.com/resource/pubmed/chemical/Fatty Acid-Binding Proteins, http://linkedlifedata.com/resource/pubmed/chemical/Fatty Acids, http://linkedlifedata.com/resource/pubmed/chemical/Fluorescent Dyes, http://linkedlifedata.com/resource/pubmed/chemical/Ligands, http://linkedlifedata.com/resource/pubmed/chemical/Myelin P2 Protein, http://linkedlifedata.com/resource/pubmed/chemical/Neoplasm Proteins, http://linkedlifedata.com/resource/pubmed/chemical/Oligodeoxyribonucleotides, http://linkedlifedata.com/resource/pubmed/chemical/Recombinant Proteins, http://linkedlifedata.com/resource/pubmed/chemical/Retinoids
pubmed:status	MEDLINE
pubmed:month	Mar
pubmed:issn	0006-2960
pubmed:author	pubmed-author:BernlohrD ADA, pubmed-author:GilR ARA, pubmed-author:KangC BCB, pubmed-author:KriegPP, pubmed-author:VanlandinghamBB
pubmed:issnType	Print
pubmed:day	5
pubmed:volume	35
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	2894-900
pubmed:dateRevised	2006-11-15
pubmed:meshHeading	pubmed-meshheading:8608126-Amino Acid Sequence, pubmed-meshheading:8608126-Anilino Naphthalenesulfonates, pubmed-meshheading:8608126-Animals, pubmed-meshheading:8608126-Base Sequence, pubmed-meshheading:8608126-Carrier Proteins, pubmed-meshheading:8608126-Chromatography, Gel, pubmed-meshheading:8608126-Chromatography, Ion Exchange, pubmed-meshheading:8608126-Cloning, Molecular, pubmed-meshheading:8608126-Escherichia coli, pubmed-meshheading:8608126-Fatty Acid-Binding Proteins, pubmed-meshheading:8608126-Fatty Acids, pubmed-meshheading:8608126-Fluorescent Dyes, pubmed-meshheading:8608126-Keratinocytes, pubmed-meshheading:8608126-Kinetics, pubmed-meshheading:8608126-Ligands, pubmed-meshheading:8608126-Models, Structural, pubmed-meshheading:8608126-Molecular Sequence Data, pubmed-meshheading:8608126-Multigene Family, pubmed-meshheading:8608126-Mutagenesis, Site-Directed, pubmed-meshheading:8608126-Myelin P2 Protein, pubmed-meshheading:8608126-Neoplasm Proteins, pubmed-meshheading:8608126-Oligodeoxyribonucleotides, pubmed-meshheading:8608126-Point Mutation, pubmed-meshheading:8608126-Protein Structure, Secondary, pubmed-meshheading:8608126-Recombinant Proteins, pubmed-meshheading:8608126-Retinoids, pubmed-meshheading:8608126-Substrate Specificity
pubmed:year	1996
pubmed:articleTitle	Expression, purification, and ligand-binding analysis of recombinant keratinocyte lipid-binding protein (MAL-1), an intracellular lipid-binding found overexpressed in neoplastic skin cells.
pubmed:affiliation	Department of Biochemistry, College of Biological Sciences, University of Minnesota, St. Paul, 55108, USA.
pubmed:publicationType	Journal Article, Research Support, U.S. Gov't, Non-P.H.S.