THE CALCIUM FREE FORM OF BLA IS CLEAVED AFTER GLU 189 DUE TO TRACE AMOUNTS OF A GLU-C-ENDOPEPTIDASE ...THE CALCIUM FREE FORM OF BLA IS CLEAVED AFTER GLU 189 DUE TO TRACE AMOUNTS OF A GLU-C-ENDOPEPTIDASE PRESENT IN THE PREPARATION. WITHOUT THIS CLEAVAGE, BLA DID NOT CRYSTALLIZE UNDER THE CONDITIONS APPLIED. DUE TO THIS CLEAVAGE, THE REGION BETWEEN TRP 182 AND ASN 192 IS NOT VISIBLE IN THE ELECTRON DENSITY. IN ADDITION THE FIRST TWO (N TERMINAL) RESIDUES ALA 1 AND ASN 2 AS WELL AS THE C-TERMINAL ARG 483 ARE NOT VISIBLE. A RAMACHANDRAN PLOT SHOWS THAT TYR 150, WHICH IS WELL DEFINED IN THE DENSITY, IS IN THE DISALLOWED REGION. ARG 134 HAS BEEN MODELED AS LEU AS THIS FITS BETTER INTO THE ELECTRON DENSITY.
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実験情報
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実験
実験
手法: X線回折
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試料調製
結晶
マシュー密度: 2.78 Å3/Da / 溶媒含有率: 56 %
結晶化
手法: 蒸気拡散法 / pH: 8.2 詳細: MOLECULE: ALPHA-1,4-GLUCAN-4-GLUCANOHYDROLASE FROM BACILLUS LICHENIFORMIS. VAPOR DIFFUSION, ROOM TEMPERATURE PROTEIN SOLUTION: 15 MG/ML BLA IN 0.4 M SODIUM CITRATE 2.5 MM EDTA, PH 8.2 ...詳細: MOLECULE: ALPHA-1,4-GLUCAN-4-GLUCANOHYDROLASE FROM BACILLUS LICHENIFORMIS. VAPOR DIFFUSION, ROOM TEMPERATURE PROTEIN SOLUTION: 15 MG/ML BLA IN 0.4 M SODIUM CITRATE 2.5 MM EDTA, PH 8.2 RESERVOIR: 0.66 M SODIUM CITRATE, 2.5 MM EDTA, PH 8.2 CALCIUM REMOVAL BY EDTA LEADS TO A CLEAVAGE OF BLA AFTER GLU 189 DUE TO TRACE AMOUNTS OF A GLU-C-ENDOPEPTIDASE PRESENT IN THE PREPARATION (SEE PAPER)., vapor diffusion Temp details: room temp
解像度: 2.2→8 Å / σ(F): 0 詳細: THE CALCIUM FREE FORM OF BLA IS CLEAVED AFTER GLU 189 DUE TO TRACE AMOUNTS OF A GLU-C-ENDOPEPTIDASE PRESENT IN THE PREPARATION. WITHOUT THIS CLEAVAGE, BLA DID NOT CRYSTALLIZE UNDER THE ...詳細: THE CALCIUM FREE FORM OF BLA IS CLEAVED AFTER GLU 189 DUE TO TRACE AMOUNTS OF A GLU-C-ENDOPEPTIDASE PRESENT IN THE PREPARATION. WITHOUT THIS CLEAVAGE, BLA DID NOT CRYSTALLIZE UNDER THE CONDITIONS APPLIED. DUE TO THIS CLEAVAGE, THE REGION BETWEEN TRP 182 AND ASN 192 IS NOT VISIBLE IN THE ELECTRON DENSITY. IN ADDITION THE FIRST TWO (N TERMINAL) RESIDUES ALA 1 AND ASN 2 AS WELL AS THE C-TERMINAL ARG 483 ARE NOT VISIBLE. A RAMACHANDRAN PLOT SHOWS THAT TYR 150, WHICH IS WELL DEFINED IN THE DENSITY, IS IN THE DISALLOWED REGION. ARG 134 HAS BEEN MODELED AS LEU AS THIS FITS BETTER INTO THE ELECTRON DENSITY.