2BLY

HEWL after a high dose x-ray "burn"

Summary for 2BLY

• Entry DOI: 10.2210/pdb2bly/pdb
• Related: 132L 193L 194L 1A2Y 1AKI 1AT5 1AT6 1AZF 1B0D 1B2K 1BGI 1BHZ 1BVK 1BVX 1BWH 1BWI 1BWJ 1C08 1C10 1DPW 1DPX 1DQJ 1E8L 1F0W 1F10 1F3J 1FDL 1FLQ 1FLU 1FLW 1FLY 1FN5 1G7H 1G7I 1G7J 1G7L 1G7M 1GPQ 1GWD 1GXV 1GXX 1H6M 1H87 1HC0 1HEL 1HEM 1HEN 1HEO 1HEP 1HEQ 1HER 1HEW 1HF4 1HSW 1HSX 1IC4 1IC5 1IC7 1IEE 1IO5 1IOQ 1IOR 1IOS 1IOT 1IR7 1IR8 1IR9 1J1O 1J1P 1J1X 1JA2 1JA4 1JA6 1JA7 1JIS 1JIT 1JIY 1JJ0 1JJ1 1JJ3 1JPO 1JTO 1JTT 1KIP 1KIQ 1KIR 1KXW 1KXX 1KXY 1LCN 1LJ3 1LJ4 1LJE 1LJF 1LJG 1LJH 1LJI 1LJJ 1LJK 1LKR 1LKS 1LMA 1LPI 1LSA 1LSB 1LSC 1LSD 1LSE 1LSF 1LSG 1LSM 1LSN 1LSY 1LSZ 1LYO 1LYS 1LYZ 1LZ8 1LZ9 1LZA 1LZB 1LZC 1LZD 1LZE 1LZG 1LZH 1LZN 1LZT 1MEL 1MLC 1N4F 1NBY 1NBZ 1NDG 1NDM 1P2C 1PS5 1QIO 1QTK 1RCM 1RFP 1RI8 1RJC 1SF4 1SF6 1SF7 1SFB 1SFG 1SQ2 1T6V 1UA6 1UC0 1UCO 1UIA 1UIB 1UIC 1UID 1UIE 1UIF 1UIG 1UIH 1UUZ 1V7S 1V7T 1VAT 1VAU 1VDP 1VDQ 1VDS 1VDT 1VED 1VFB 1W6Z 1WTM 1WTN 1XEI 1XEJ 1XEK 1XFP 1YIK 1YIL 2BLX 2CDS 2HFM 2IFF 2LYM 2LYO 2LYZ 2LZH 2LZT 3HFL 3HFM 3LYM 3LYO 3LYT 3LYZ 3LZT 4LYM 4LYO 4LYT 4LYZ 4LZT 5LYM 5LYT 5LYZ 6LYT 6LYZ 7LYZ 8LYZ
• Descriptor: LYSOZYME C, TETRAETHYLENE GLYCOL (3 entities in total)
• Functional Keywords: radiation damage, synchrotron, phasing, rip, bacteriolytic enzyme, glycosidase, hydrolase
• Biological source: GALLUS GALLUS (CHICKEN)
• Cellular location: Secreted: P00698
• Total number of polymer chains: 1
• Total formula weight: 14719.61

Authors

Nanao, M.H.,Ravelli, R.B. (deposition date: 2005-03-08, release date: 2005-09-07, Last modification date: 2024-11-13)

Primary citation

Nanao, M.H.,Sheldrick, G.M.,Ravelli, R.B.
Improving Radiation-Damage Substructures for Rip.
Acta Crystallogr.,Sect.D, 61:1227-, 2005

PubMed Abstract: Specific radiation damage can be used to solve macromolecular structures using the radiation-damage-induced phasing (RIP) method. The method has been investigated for six disulfide-containing test structures (elastase, insulin, lysozyme, ribonuclease A, trypsin and thaumatin) using data sets that were collected on a third-generation synchrotron undulator beamline with a highly attenuated beam. Each crystal was exposed to the unattenuated X-ray beam between the collection of a 'before' and an 'after' data set. The X-ray 'burn'-induced intensity differences ranged from 5 to 15%, depending on the protein investigated. X-ray-susceptible substructures were determined using the integrated direct and Patterson methods in SHELXD. The best substructures were found by downscaling the 'after' data set in SHELXC by a scale factor K, with optimal values ranging from 0.96 to 0.99. The initial substructures were improved through iteration with SHELXE by the addition of negatively occupied sites as well as a large number of relatively weak sites. The final substructures ranged from 40 to more than 300 sites, with strongest peaks as high as 57sigma. All structures except one could be solved: it was not possible to find the initial substructure for ribonuclease A, however, SHELXE iteration starting with the known five most susceptible sites gave excellent maps. Downscaling proved to be necessary for the solution of elastase, lysozyme and thaumatin and reduced the number of SHELXE iterations in the other cases. The combination of downscaling and substructure iteration provides important benefits for the phasing of macromolecular structures using radiation damage.

PubMed: 16131756
DOI: 10.1107/S0907444905019360

Experimental method

X-RAY DIFFRACTION (1.4 Å)