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Human melanoma inhibitory protein binds to the FN12-14 Hep II domain of fibronectin.


ABSTRACT: The heparin binding site (Hep II) of fibronectin plays a major role in tumor cell metastasis. Its interaction with heparan sulfate proteoglycans occurs in a variety of physiological processes including focal adhesion and migration. The melanoma inhibitory activity (MIA) is an important protein that is functionally involved in melanoma development, progression, and tumor cell invasion. After its secretion by malignant melanoma cells, MIA interacts with fibronectin and thereby actively facilitates focal cell detachment from surrounding structures and strongly promotes tumor cell invasion and the formation of metastases. In this report, the authors have determined the molecular basis of the interaction of MIA with the Hep II domain of fibronectin based on nuclear magnetic resonance spectroscopic binding assays. The authors have identified the type III modules 12 to 14 of fibronectin's Hep II as the major MIA binding sites. These results now provide a new target protein-protein binding interface for the discovery of novel antimetastatic agents against malignant melanoma in the future.

SUBMITTER: Yip KT 

PROVIDER: S-EPMC5451317 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature

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Human melanoma inhibitory protein binds to the FN12-14 Hep II domain of fibronectin.

Yip King Tuo KT   Zhong Xueyin X   Seibel Nadia N   Arnolds Oliver O   Schöpel Miriam M   Stoll Raphael R  

Biointerphases 20170531 2


The heparin binding site (Hep II) of fibronectin plays a major role in tumor cell metastasis. Its interaction with heparan sulfate proteoglycans occurs in a variety of physiological processes including focal adhesion and migration. The melanoma inhibitory activity (MIA) is an important protein that is functionally involved in melanoma development, progression, and tumor cell invasion. After its secretion by malignant melanoma cells, MIA interacts with fibronectin and thereby actively facilitates  ...[more]

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