Crystallization and preliminary diffraction analysis of the phosphatase domain of PTPN14 in the human papillomavirus E7 binding-defective mutant form

• 발행기관: 한국구조생물학회
• 저자명: Dahwan Lim Chang Hoon Lee Ho-Chul Shin Seung Jun Kim Bonsu Ku
• 간행물 정보: 『Biodesign』Vol 9, No 4, Dec, 63~66쪽, 전체 4쪽
• 주제분류: 자연과학 > 생물학
• 파일형태: PDF
• 발행일자: 2021.12.31

영문 초록

A tumor suppressor protein PTPN14 interacts with the oncoprotein E7 of human papillomaviruses, leading to its proteasomal degradation. Introduction of F1044S, G1055Q, and E1095A mutations into its phosphatase domain restored the antitumor activity by impairing the interaction with E7, showing the therapeutic potential of this mutant form against human papillomavirus-involved cancers. In this study, the phosphatase domain of PTPN14 containing the three mutations was produced in an Escherichia coli expression system, purified using Ni-NTA affinity and size exclusion chromatographies, and then crystallized. X-ray diffraction data with a maximum resolution of 1.50 Å were successfully collected, and a preliminary diffraction analysis was conducted. Our crystals belonged to the P21 space group with unit cell parameters of a = 43.9 Å, b = 74.3 Å, c = 47.8 Å, and β = 102.0°. The asymmetric unit contains one protein molecule with a 45% solvent content and a 2.2 Å3/Da Matthews coefficient.

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INTRODUCTION

RESULTS AND DISCUSSION

METHODS

ACKNOWLEDGEMENTS

CONFLICT OF INTEREST

REFERENCES