SHEET DETERMINATION METHOD: DSSP THE SHEETS PRESENTED AS "AB" IN EACH CHAIN ON SHEET RECORDS BELOW ... SHEET DETERMINATION METHOD: DSSP THE SHEETS PRESENTED AS "AB" IN EACH CHAIN ON SHEET RECORDS BELOW IS ACTUALLY AN 6-STRANDED BARREL THIS IS REPRESENTED BY A 7-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS ARE IDENTICAL.
Mass: 18.015 Da / Num. of mol.: 208 / Source method: isolated from a natural source / Formula: H2O
-
Details
Has protein modification
Y
-
Experimental details
-
Experiment
Experiment
Method: X-RAY DIFFRACTION / Number of used crystals: 1
-
Sample preparation
Crystal
Density Matthews: 2.03 Å3/Da / Density % sol: 39.1 % / Description: NONE
Crystal grow
Temperature: 295 K / Method: vapor diffusion, sitting drop / pH: 7 Details: STOCK: 60 MG BOVINE TRYPSIN (SIGMA) PLUS 5 MG BENZAMIDINE (SIGMA) IN 1 ML OF HEPES BUFFER 0.1M PH 7.0 AND 3 MM CACL2. COCKTAIL: 15% PEG 3350 IN 0.1 M HEPES PH 7.0 ALSO CONTAINING 10 MG/ML ...Details: STOCK: 60 MG BOVINE TRYPSIN (SIGMA) PLUS 5 MG BENZAMIDINE (SIGMA) IN 1 ML OF HEPES BUFFER 0.1M PH 7.0 AND 3 MM CACL2. COCKTAIL: 15% PEG 3350 IN 0.1 M HEPES PH 7.0 ALSO CONTAINING 10 MG/ML SALMON SPERM PROTAMINE (SIGMA) DROP: 2 UL STOCK PLUS 2 UL COCKTAIL IN CRYSCHEM PLATES AT 22 DEG C.
Resolution: 1.5→25.09 Å / Cor.coef. Fo:Fc: 0.967 / Cor.coef. Fo:Fc free: 0.959 / SU B: 1.134 / SU ML: 0.043 / Cross valid method: THROUGHOUT / ESU R: 0.068 / ESU R Free: 0.068 / Stereochemistry target values: MAXIMUM LIKELIHOOD Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. WARNING: THE PEPTIDES B AND C MEDIATING INTERMOLECULAR CONTACTS BETWEEN 3 TRYPSIN MONOMERS HAVE BEEN ASSIGNED RESIDUE TYPE UNK. THEY HAVE ...Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. WARNING: THE PEPTIDES B AND C MEDIATING INTERMOLECULAR CONTACTS BETWEEN 3 TRYPSIN MONOMERS HAVE BEEN ASSIGNED RESIDUE TYPE UNK. THEY HAVE HIGH B-FACTORS AND ARE INTENDED AS PLACE HOLDERS FOR WHAT WE BELIEVE IS A MIXTURE OF BASIC PROTAMINE PEPTIDES, POLYAMINES, AND OTHER COMPOUNDS FROM THE SALMON PROTAMINE EXTRACT, PROBABLY IN MULTIPLE CONFORMATIONS. SIMILAR CAVEATS APPLY TO THE PHENOL ENTITIES WE BELIEVE ORIGINATE FROM IMPURITIES IN THE PROTAMINE EXTRACT USED AS A CRYSTALLIZATION ADDITIVE.
Rfactor
Num. reflection
% reflection
Selection details
Rfree
0.176
1664
5 %
RANDOM
Rwork
0.154
-
-
-
obs
0.155
31363
99.8 %
-
Solvent computation
Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: MASK