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QSAR生命的发动机卟啉c20h14n4---用反向传导做卟啉的分子模型

發布時間:2025/4/5 45 豆豆
生活随笔 收集整理的這篇文章主要介紹了 QSAR生命的发动机卟啉c20h14n4---用反向传导做卟啉的分子模型 小編覺得挺不錯的,現在分享給大家,幫大家做個參考.




卟啉是一種非常重要的化學物質,是血紅素,葉綠素,血藍素,維生素B12的核心結構,如果沒有卟啉也許也可能有生命但肯定不是現在的樣子。 如此神奇的物質到底是如何作用的,按照QSAR的原理,結構決定分子的一切,就用神經網絡的反向傳導原理去模擬卟啉的網絡結構看看平衡態的單雙鍵的鍵值到底是多少。

雖然很難說這么算出來的值和實際的化學物質的鍵值有什么聯系,但是就像破譯密碼,去分析一下字母出現的頻率對破譯總是有幫助的。





將卟啉的分子旋轉很容易觀察到這種結構的高度對稱性,根據這種對稱性由神經網絡的反向傳導原理做出網絡結構





這是至今為止用這種辦法模擬的最復雜的分子,有38個原子,通過用原子反向傳導的啟動順序來實現結構的對稱性,

第一步:n31,c33,c34

第二步:c32,c35 ,h33,h31,h34

第三步:cb,cc

第四步:c25,c42,hcb,hcc

第五步:n21,n41,c24,c43

第六步:c23,c44,h24,h43

第七步:c22,c45,h23,h44

第八步:ca,cd

第九步:c12,c15,hca,hcd

第十步:c13,c14,n11

用這個順序分10次啟動著38個網絡可以得到相對對稱性比較強的結果,這個網絡的計算速度很慢只收集了20組數據,也許數據再多些對稱性還會更強










具體數據



fff31[0]fff31[3]fff31[k31-1]fff32[0]fff32[2]fff32[3]fff33[0]
0.500199650.499999360.500038750.500481350.500322460.500423070.50010892
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0.500002520.49999850.499675990.499899620.498986360.499219180.49977703
0.500429530.503419060.500201050.500943520.500751120.500734350.50018997
0.500047920.499999350.499877470.50010110.499890940.499877040.49993117
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0.500029440.499998750.499995460.500224220.499910160.499848970.49981
0.499969450.499873210.500082280.499945470.500292360.500243570.50042444
0.500617880.499998950.500142320.499851920.500884490.50065230.49984362
0.499972350.499999430.500509850.499909110.500016060.499984510.50010931
0.499768720.499997490.499843230.500104070.499895880.499970810.49976063
0.500649540.499999260.499980320.499949290.500450480.500354290.49977302
0.500011210.499999540.500053060.500148860.500053810.500016950.49998713
0.500031480.499999730.499700920.499855570.499979620.499969560.49984922
0.500530.499999090.500141230.500070130.500103490.50008750.49990008
0.500739780.499998440.500058650.500182050.49996260.500118620.49996281
0.499978460.499999260.500026860.49953640.499952210.499995180.49990723
0.500312860.499999570.500080320.500083140.500316220.500271870.49991514
???????
0.500232610.500163610.500025160.500073420.500083040.500075670.49991553


fff33[1]fff33[k33-2]fff35[2]fff35[3]fff35[k35-1]fff34[1]fffcb[0]
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0.499865150.499998560.499982050.500056060.499988290.499998470.50011179
0.500131780.499997410.50084650.50077840.500177280.499773480.50088464
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0.499858650.499997940.500089640.499948590.499881120.499996980.50059988
0.499869140.499748640.499854690.500047650.500080880.499999280.50021728
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0.499895110.49980480.500014240.500006020.499879780.499999680.50016511
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0.499986830.499863370.500020620.499996280.500037080.499999710.50023305
???????
0.499946550.499872160.50008090.500116670.500070940.499978170.50034556


fffcb[1]fffcc[kcc-1]fffcc[kcc-2]fff23[0]fff23[1]fff23[k23-2]fff23[k23-1]
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0.499999710.500805290.49999960.500272030.50017830.499999620.50036147
???????
0.499928170.500292840.499995490.500158960.500149060.499881150.50016129




fff22[2]fff22[3]fff22[k22-1]fff25[0]fff25[1]fff25[k25-1]fff24[1]
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0.499872560.500010430.500137670.500182580.500166190.500584060.49999808
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0.500211030.500193320.500106690.499569580.499613530.500227760.49999964
???????
0.50013540.500174740.50027450.499917130.499949470.50032860.50050879


fff43[0]fff43[1]fff43[k43-2]fff43[k43-1]fff41[0]fff41[1]fff41[k41-1]
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0.500458950.50041910.499999570.500485570.5003110.500392870.50033015
0.500775210.500697120.499997770.500063970.500300010.500331050.50029139
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0.500272390.500213730.499999450.50042680.50010960.499898280.50004256
0.500033370.500041320.49991770.499795650.500197660.500232640.50013589
0.500358910.500312880.499999410.500079480.500197420.500222020.50025759
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0.49999210.500082210.499606870.49974750.500106920.499898450.49992292
???????
0.500247010.500244240.499857310.499952760.500370390.500323940.50021828


fff45[2]fff45[3]fff45[k45-1]fff44[1]fffca[0]fffca[1]fffcd[kcd-1]
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0.500143780.500095360.499606630.499998860.500431370.499998980.49989525
0.500188190.499931460.499411470.499999640.500188340.49999940.49987623
0.499861690.499913280.499826530.499997250.50045740.499997660.49937213
0.500029250.500064350.500047910.4999990.500317940.4999990.49986168
0.500012010.500000820.499982050.499999570.500606910.499999490.4998989
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0.500009690.500050360.500028280.499999710.500128560.49999960.49994021
???????
0.500011730.500033540.499987750.499902530.500400940.499911720.49990999



fffcd[kcd-2]fff13[0]fff13[1]fff13[k13-2]fff13[k13-1]fff11[0]fff11[3]
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0.499999630.500231140.499999690.499981380.500007610.500117750.49999955
???????
0.499945460.500357740.500137790.500010290.500023290.500383950.49999881



fff11[k11-1]fff14[0]fff14[1]fff14[k14-2]迭代次數
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0.499286640.500226120.500140070.499996812364981
0.499862980.49949610.499710890.4994475334545786
0.499901480.500011380.500041090.4999996667322789
0.500330060.500064370.499850190.4998813683398458
0.499869270.50063380.500569390.4999994239325217
0.500422370.499984450.500111960.4994858817928160
0.500037410.499984860.499984890.499999229406931
0.499834310.500018480.500008220.4999997189129362
?????
0.499965220.500070360.500065590.4999034738827238.2


總結

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