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Structural basis of disease-causing mutations in hepatocyte nuclear factor 1beta. Biochemistry 2007 Oct 30;46(43):12071-80

Date

10/11/2007

Pubmed ID

17924661

Pubmed Central ID

PMC2367142

DOI

10.1021/bi7010527

Scopus ID

2-s2.0-35648988438   26 Citations

Abstract

HNF1beta is an atypical POU transcription factor that participates in a hierarchical network of transcription factors controlling the development and proper function of vital organs such as liver, pancreas, and kidney. Many inheritable mutations on HNF1beta are the monogenic causes of diabetes and several kidney diseases. To elucidate the molecular mechanism of its function and the structural basis of mutations, we have determined the crystal structure of human HNF1beta DNA binding domain in complex with a high-affinity promoter. Disease-causing mutations have been mapped to our structure, and their predicted effects have been tested by a set of biochemical/ functional studies. These findings together with earlier findings with a homologous protein HNF1alpha, help us to understand the structural basis of promoter recognition by these atypical POU transcription factors and the site-specific functional disruption by disease-causing mutations.

Author List

Lu P, Rha GB, Chi YI

Author

Young-In Chi PhD Assistant Professor in the Surgery department at Medical College of Wisconsin




MESH terms used to index this publication - Major topics in bold

Amino Acid Sequence
Electrophoretic Mobility Shift Assay
HeLa Cells
Hepatocyte Nuclear Factor 1-beta
Humans
Models, Molecular
Molecular Sequence Data
Mutagenesis, Site-Directed
Mutation
Protein Conformation
Sequence Homology, Amino Acid