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[Subcellular localization of basic Krüppel-like factor].

Xiao-Yun Ma¹, Mang-Ju Wang, Xiang-Hu Qu

¹Beijing Institute of Radiation Medicine, Beijing 100850, China.

Sheng Wu Hua Xue Yu Sheng Wu Wu Li Xue Bao Acta Biochimica Et Biophysica Sinica

|March 7, 2003

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Basic Krüppel-like factor (BKLF) localizes to the nucleus, with specific regions identified as nuclear localization signals (NLS). These findings help clarify BKLF

Area of Science:

Molecular Biology
Cell Biology
Genetics

Context:

Basic Krüppel-like factor (BKLF) is a transcription factor with an unclear function.
Understanding its subcellular localization is crucial for elucidating its biological roles.

Purpose:

To determine the subcellular localization of human BKLF (hBKLF).
To identify the specific protein domains responsible for hBKLF's nuclear import.

Summary:

Direct and indirect fluorescence confirmed hBKLF localizes to the nucleus in a speckled nucleoplasmic pattern, excluding nucleoli.
Deletion mutants revealed that the three zinc fingers and the N-terminus, including the CtBP-binding motif and proline-rich domain, act as nuclear localization signals (NLS).

Impact:

Related Experiment Videos

Establishes the nuclear localization of hBKLF.
Identifies key NLS within hBKLF, providing a foundation for future functional studies of this transcription factor.