In 2014, Nieng Yan and colleagues described the crystal structure of GLUT1 bound to nonyl-β-D-glucoside [55]. This structure was locked in an inward-facing conformation. This was followed in 2015 by a crystal structure of GLUT3 from the Yan group [56].
In 2014, new GLUT1 and GLUT5 computer models were developed based on the XylE crystal structure, which is a bacterial d-xylose transporting homolog sharing a high degree of similarity and identity with GLUT1–4.81
Finally, almost four decades after the first purified GLUT, a high resolution (3.2 å) crystal structure was reported in 2014. The purified protein was generated using a baculovirus transfection system with High Five insect cells.84This GLUT1 model reveals a partially open inward facing conformation that is locked due to a single missense mutation, E329Q, and confirms a 12-TM transporter protein formed of two six-helical domains, with cytoplasmic N-domains and C-domains. One additional feature was the presence of a helical bundle, an intracellualr coiled heical, ICH, domain, within the long intracellular loop. This ICH domain has also been observed in other sugar transporter crystals, such as XylP and GlcP,85,86 and is believed to be unique to the sugar porter family and not in other MFS.
真的不可思议,两边在学术上都算个人物却带着亲朋好友徒子徒孙在杂货摊上干仗。号称求真!
科学是求真?
考古探案才是求真for the truth ,the one and only.
实用科技以解决问题完成工程为目的,国内为了科研而科研,大机械生产线都是西欧设计。纯科学是以解释现象让人明理。连自己圈子的人都不能说服怎么能说弄清了机理?
不是求真都是名利。
老泉 发表评论于
Maloney 2008 综述提到transporter构象数据不够,结构难定。在此文中,他引用六篇自己的文章,但是没引93年一文。见”Inns and outs of major facilitator superfamily antiporter“ Annu. Rev. Microbiology, 2008. 62:289-305. 此类机理的研究从六几年提出喇叭口,八几年有以热力学为基础的论述。老颜九几年作了贡献,但是对晶体结构及分析没有涉及,因此说????出构象。小颜贡献了几个相关构象,不容易。搞大分子结构,有的一辈子搞不定一个。