CRYSTAL STRUCTURE OF MTCP 1, AN ONCOGENE EXPRESSED IN T CELL MALIGNANCIES

T 细胞恶性肿瘤中表达的癌基因 MTCP 1 的晶体结构

• 批准号: 6281315
• 负责人: Irene T Weber
• 金额: $ 1.33万
• 依托单位: CORNELL UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-15 至 1999-08-14
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6281315
• 关键词: biological products; biomedical resource; proteins; radiography; structural biology

Mature T-cell Proliferation Factor 1 (MTCP-1) and TCL-1 genes form a novel family that is involved in T-cell malignancies and lymphoid proliferation. TCL-1 and MTCP-1 oncogenes encode for 14kDa proteins that share 41% identical amino acid residues but have no significant similarities with other known proteins. The crystal structure of MTCP-1 will be used to design mutations to study the function, and peptide analogs as potential drugs for treatment of T-cell malignancies. Crystals of MTCP-1 grow in space group P6 with the unit cell dimensions of a = b = 61.41 and c = 87.31
. The crystals diffract to 2.5-2.0
resolution, three potential heavy atom derivatives have been found, and phases result in a partially interpretable electron density map. There are two problems: the X-ray data are weak and radiation decay reduces the accuracy of the measurements; and the derivatives are not mutually isomorphous. Synchrotron time is requested to obtain accurate high resolution data for the native and anomalous data for the derivatives in order to improve the phases. We are also preparing selenomethionine enriched MTCP-1 for MAD phasing.

成熟t细胞增殖因子1 （MTCP-1）和TCL-1基因形成