| pubmed-article:11241215 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:11241215 | lifeskim:mentions | umls-concept:C0020792 | lld:lifeskim |
| pubmed-article:11241215 | lifeskim:mentions | umls-concept:C0662917 | lld:lifeskim |
| pubmed-article:11241215 | lifeskim:mentions | umls-concept:C0205145 | lld:lifeskim |
| pubmed-article:11241215 | pubmed:issue | 5 | lld:pubmed |
| pubmed-article:11241215 | pubmed:dateCreated | 2001-3-12 | lld:pubmed |
| pubmed-article:11241215 | pubmed:abstractText | Bone morphogenetic proteins (BMPs) belong to the transforming growth factor-beta (TGF-beta) superfamily of multifunctional cytokines. BMP induces its signal to regulate growth, differentiation, and apoptosis of various cells upon trimeric complex formation with two distinct type I and type II receptors on the cell surface: both are single-transmembrane serine/threonine kinase receptors. To identify the amino acid residues on BMP type I receptor responsible for its ligand binding, the structure-activity relationship of the extracellular ligand-binding domain of the BMP type IA receptor (sBMPR-IA) was investigated by alanine-scanning mutagenesis. The mutant receptors, as well as sBMPR-IA, were expressed as fusion proteins with thioredoxin in Escherichia coli, and purified using reverse phase high performance liquid chromatography (RP-HPLC) after digestion with enterokinase. Structural analysis of the parent protein and representative mutants in solution by CD showed no detectable differences in their folding structures. The binding affinity of the mutants to BMP-4 was determined by surface plasmon resonance biosensor. All the mutant receptors examined, with the exception of Y70A, displayed reduced affinities to BMP-4 with the rank order of decreases: I52A (17-fold) approximately F75A (15-fold) >> T64A (4-fold) = T62A (4-fold) approximately E54A (3-fold). The decreases in binding affinity observed for the latter three mutants are mainly due to decreased association rate constants while alterations in rate constants both, for association and dissociation, result in the drastically reduced affinities for the former two mutants. These results allow us to conclude that sBMPR-IA recognizes the ligand using the concave face of the molecule. The major ligand-binding site of the BMP type IA receptor consists of Phe75 in loop 2 and Ile52, Glu54, Thr62 and Thr64 on the three-stranded beta-sheet. These findings should provide a general basis for the ligand/type I receptor recognition in the TGF-beta superfamily. | lld:pubmed |
| pubmed-article:11241215 | pubmed:language | eng | lld:pubmed |
| pubmed-article:11241215 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:11241215 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:11241215 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
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| pubmed-article:11241215 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
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| pubmed-article:11241215 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:11241215 | pubmed:issn | 0006-3525 | lld:pubmed |
| pubmed-article:11241215 | pubmed:author | pubmed-author:KobayashiYY | lld:pubmed |
| pubmed-article:11241215 | pubmed:author | pubmed-author:KonishiHH | lld:pubmed |
| pubmed-article:11241215 | pubmed:author | pubmed-author:UenoNN | lld:pubmed |
| pubmed-article:11241215 | pubmed:author | pubmed-author:KatohEE | lld:pubmed |
| pubmed-article:11241215 | pubmed:author | pubmed-author:YamazakiTT | lld:pubmed |
| pubmed-article:11241215 | pubmed:author | pubmed-author:NatsumeTT | lld:pubmed |
| pubmed-article:11241215 | pubmed:author | pubmed-author:HattaTT | lld:pubmed |
| pubmed-article:11241215 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:11241215 | pubmed:volume | 55 | lld:pubmed |
| pubmed-article:11241215 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:11241215 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:11241215 | pubmed:pagination | 399-406 | lld:pubmed |
| pubmed-article:11241215 | pubmed:dateRevised | 2009-11-19 | lld:pubmed |
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| pubmed-article:11241215 | pubmed:meshHeading | pubmed-meshheading:11241215... | lld:pubmed |
| pubmed-article:11241215 | pubmed:year | 2000 | lld:pubmed |
| pubmed-article:11241215 | pubmed:articleTitle | Identification of the ligand-binding site of the BMP type IA receptor for BMP-4. | lld:pubmed |
| pubmed-article:11241215 | pubmed:affiliation | Structural Biology Unit, National Institute of Agrobiological Resources, Tsukuba, Ibaraki 305-8602, Japan. | lld:pubmed |
| pubmed-article:11241215 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:11241215 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
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