How to use

• Rotation: left button
• Translation: middle button or Ctrl-key + left button
• Zoom: mousewheel or right button(up/down) or Shift-key + left button(up/down)
• Slab: left button + Ctrl-key. horizontal move adjusts near clipping plane, vertical move far clipping plane.

You can also change mouse mode with radio buttons at right-bottom corner.

Proverb: The chemist elements should C3H3: Clear Head + Clever Hands + Clean Habits. ——卢嘉锡

化学家的“元素组成”应当是C3H3，即：Clear Head（清醒的头脑）+ Clever Hands（灵巧的双手）+Clean Habits（洁净的习惯）。 ——卢嘉锡

【卢嘉锡 】:

1915.10.26～2001.6.4，中国物理化学家、化学教育家和科技组织领导者。工作涉及物理化学、结构化学、核化学和材料科学等多种学科领域。

在结构化学研究工作中有杰出贡献，曾提出固氮酶活性中心的结构模型，从事结构与性能的关系研究等，对中国原子簇化学的发展起了重要推动作用。

________________________________________________________________________________________________________( Programmed and Edited By: Yang-Yang Zhang, Version 2018.12.01)

You can load PDB, SDF/MOL(MDL not SYBYL) or XYZ files
-From Your Local Disk or Database. (Don't worry. Your file will not be uploaded) : Load from file
-From Tsinghua Computational Chemistry Database (TCCDB) Database, please input the Name : Download
-From RCSB PDB Database, please input the PDBID : Download
-From PubChem Database, please input the Compound ID (CID) : Download
-From NIST Chemistry WebBook Database, please input the CAS Registry Number Download
-or From the text area below. You can paste your coordinates below !

Reload Molecule From Text Area Above !

Color by spectrum chain secondary strcuture B factor polar/nonpolar
Main chain as thick ribbon thin ribbon(faster) strand cylinder & plate C alpha trace B factor Tube bonds (everything)
Nucleic acid bases as sticks lines polygons
Side chains as lines
Don't smoothen beta-sheets in ribbons
Non-bonded atoms (solvent/ions) as spheres stars
Small molecules(HETATMs) as sticks ball and stick ball and stick (multiple bond) spheres icosahedrons lines
Multiple bond option is for SDF/MOL file ONLY.
Unit cell
Biological assembly (the last one defined)
Crystal packing
Show HETATMs in symmetry mates (slower)
Background color: white black grey Projection: orthoscopic perspective

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