High resolution X-ray and NMR structural study of human T-cell immunoglobulin and mucin domain containing protein-3.
High resolution X-ray and NMR structural study of human T-cell immunoglobulin and mucin domain containing protein-3.
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人类T细胞免疫球蛋白和含有蛋白质3的粘蛋白结构域的高分辨率X射线和NMR结构研究。
DOI:
10.1038/s41598-018-35754-0
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发表时间:
2018-11-30
影响因子:
4.6
通讯作者:
Blumberg RS
中科院分区:
文献类型:
--
作者:
Gandhi AK;Kim WM;Sun ZJ;Huang YH;Bonsor DA;Sundberg EJ;Kondo Y;Wagner G;Kuchroo VK;Petsko G;Blumberg RS
T-cell immunoglobulin and mucin domain containing protein-3 (TIM-3) is an important immune regulator. Here, we describe a novel high resolution (1.7 Å) crystal structure of the human (h)TIM-3 N-terminal variable immunoglobulin (IgV) domain with bound calcium (Ca++) that was confirmed by nuclear magnetic resonance (NMR) spectroscopy. Significant conformational differences were observed in the B-C, C′-C″ and C′-D loops of hTIM-3 compared to mouse (m)TIM-3, hTIM-1 and hTIM-4. Further, the conformation of the C-C′ loop of hTIM-3 was notably different from hTIM-4. Consistent with the known metal ion-dependent binding of phosphatidylserine (PtdSer) to mTIM-3 and mTIM-4, the NMR spectral analysis and crystal structure of Ca++-bound hTIM-3 revealed that residues in the hTIM-3 F-G loop coordinate binding to Ca++. In addition, we established a novel biochemical assay to define hTIM-3 functionality as determined by binding to human carcinoembryonic antigen cell adhesion molecule 1 (CEACAM1). These studies provide new insights useful for understanding and targeting hTIM-3.
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影响因子:
3.7
作者:
Gao X;Zhu Y;Li G;Huang H;Zhang G;Wang F;Sun J;Yang Q;Zhang X;Lu B
通讯作者:
Lu B
影响因子:
16.8
作者:
Sakuishi K;Jayaraman P;Behar SM;Anderson AC;Kuchroo VK
通讯作者:
Kuchroo VK
影响因子:
30.5
作者:
Chiba, Shigeki;Baghdadi, Muhammad;Akiba, Hisaya;Yoshiyama, Hironori;Kinoshita, Ichiro;Dosaka-Akita, Hirotoshi;Fujioka, Yoichiro;Ohba, Yusuke;Gorman, Jacob V.;Colgan, John D.;Hirashima, Mitsuomi;Uede, Toshimitsu;Takaoka, Akinori;Yagita, Hideo;Jinushi, Masahisa
通讯作者:
Jinushi, Masahisa
影响因子:
30.5
作者:
Sabatos, CA;Chakravarti, S;Kuchroo, VK
通讯作者:
Kuchroo, VK
影响因子:
10.1
作者:
Anderson, Ana C.
通讯作者:
Anderson, Ana C.