KR102381379B1 - 쇼트닝 배송물질을 이용한 결정 시료 배송 방법 - Google Patents
쇼트닝 배송물질을 이용한 결정 시료 배송 방법 Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/2204—Specimen supports therefor; Sample conveying means therefore
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/08—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a stream of discrete samples flowing along a tube system, e.g. flow injection analysis
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Abstract
Shortening은 LCP와는 다르게 습도, 압력에 따라 phase 변화가 존재하지 않아 데이터 수집 동안 실험 환경에 대한 영향이 없다. 또한 쇼트닝은 실온에서 반고체상태이며 융점 이상에서는 액체상태로 변하여 특징이 있다. 이에 따라 시료를 준비하는 과정에서는 온도를 융점 이상으로 올려 액체상태로 만든 후 시료를 이동을 수행하고, 실린지 내에서는 실온에 방치하여 반고체상태로 원상복귀 할 수 있어, 기존 grease 방법과 같은 시료 손실이 없다. 또한 쇼트닝은 인체에 안전할 뿐만 아니라 가격 (4.5 kg = 10,000원 이내)이 매우 저렴한 장점이 있다.
Description
도 2는 쇼트닝 A와 쇼트닝 B의 배경 산란 분석을 보인다.
도 3은 쇼트닝 A에 배송된 GI의 색인된 회절 패턴을 보인다.
도 4는 쇼트닝 A에 배송된 리소자임의 색인된 회절 패턴을 보인다.
도 5는 쇼트닝 B에 배송된 GI의 색인된 회절 패턴을 보인다.
도 6은 쇼트닝 B에 배송된 리소자임의 색인된 회절 패턴을 보인다.
도 7은 쇼트닝에 배송된 (a) GI와 (b) 리소자임의 전자밀도 지도를 보인다.
도 8은 쇼트닝 배송물질을 이용한 GI의 결정 구조와 다른 배송 매체를 이용한 결정 구조의 비교를 보인다.
도 9는 쇼트닝 배송물질을 이용한 GI의 결정 구조와 다른 배송 매체를 이용한 결정 구조의 비교를 보인다.
| Data collection | Shortening A | Shortening B | ||
| GI | Lysozyme | GI | Lysozyme | |
| Wavelength (Å) | 0.9796 | |||
| Photons/sec a | ~ 1.2 x 1012 | |||
| Expose time | 100 ms | |||
| Space group | I222 | P43212 | I222 | P43212 |
| Cell dimensions (Å) | ||||
|
a
b c |
94.19 99.92 103.25 |
79.55 79.55 38.51 |
94.19 99.92 103.25 |
79.18 79.18 38.34 |
| No. collected images | 64000 | 48000 | 48000 | 48000 |
| No. of hits | 25626 | 18926 | 30418 | 29290 |
| No. of indexed images | 13651 | 15643 | 16522 | 27413 |
| Resolution (Å) | 72.46-1.90 (1.96-1.90) |
80.00-1.80 (1.86-1.80) |
72.46-2.00 (2.07-2.00) |
80.00-1.50 (1.55-1.50) |
| Unique reflections | 38725 (3832) | 11974 (1148) | 33248 (3247) | 20406 (1995) |
| Completeness | 100.0 (100.0) | 100.0 (100.0) | 100.0 (100.0) | 100.0 (100.0) |
| Redundancy | 426.9 (292.6) | 1451.9 (1011.7) | 701.6 (481.7) | 756.6 (285.8) |
| I/σ(I) | 4.09 (2.07) | 7.87 (2.21) | 4.10 (1.72) | 9.27 (1.68) |
| R split b | 19.11 (53.97) | 7.57 (46.32) | 17.88 (63.03) | 6.58 (70.95) |
| CC | 0.9576 (0.6392) | 0.9937 (0.8016) | 0.9669 (0.5778) | 0.9936 (0.5183) |
| CC* | 0.9891 (0.8831) | 0.9984 (0.9433) | 0.9915 (0.8558) | 0.9984 (0.8262) |
| Wilson B factor (Å2) | 30.85 | 36.24 | 31.57 | 39.72 |
| Refinement statistics | ||||
| Resolution (Å) | ||||
| Rfactor / Rfree (%) c | 17.95/21.43 | 17.66/20.53 | 17.56/20.10 | 18.49/20.69 |
| B-factor (Averaged) | ||||
| Protein | 34.02 | 36.88 | 33.63 | 40.33 |
| Ligands | 33.50 | 36.45 | 22.90 | 44.35 |
| R.m.s. deviations | ||||
| Bond lengths (Å) | 0.006 | 0.006 | 0.007 | 0.006 |
| Bond angles (ㅀ) | 0.825 | 0.787 | 0.831 | 0.797 |
| Ramachandran plot (%) | ||||
| favored | 96.86 | 98.43 | 97.12 | 99.21 |
| allowed | 3.14 | 1.57 | 2.88 | 0.79 |
Claims (3)
- 제1 시린지 내에 쇼트닝 배송물질을 준비하는 단계;
제2 시린지 내에 결정 시료를 준비하는 단계;
상기 제1,2 시린지를 커플러를 사용하여 연결한 상태에서 결정 시료가 고르게 분포될 때까지 상기 쇼트닝 배송물질과 결정 시료를 혼합하는 단계;
결정 시료와 쇼트닝 배송물질이 혼합된 시료를 상기 제1,2 시린지 중 어느 하나의 시린지로 옮긴 상태에서 다른 하나의 시린지를 제거한 후에 시린지 니들을 연결하는 단계; 및
시린지 펌프를 이용하여 결정 시료를 배송하는 단계;를 포함하고,
쇼트닝 배송물질을 상기 제1 시린지 내에 준비하는 단계는,
쇼트닝을 담은 바이알을 고온의 물이 담긴 비커에서 액체 상태의 쇼트닝을 획득한 후 상기 제1 시린지로 옮기는 단계;를 포함하며,
상기 제2 시린지 내에 결정 시료를 준비하는 단계는,
상기 결정 시료를 함유한 상기 제2 시린지를 수직으로 놓고 일정시간 방치하는 단계; 및
상기 결정 시료가 상기 제2 시린지의 바닥으로 가라앉으면, 플런저를 위쪽으로 밀어 상기 결정 시료를 제외한 결정 용액의 상층액을 제거하는 단계; 를 더 포함하는,
쇼트닝 배송물질 이용한 결정 시료 배송 방법.
- 제1항에 있어서,
쇼트닝 배송물질을 상기 제1 시린지 내에 준비하는 단계는,
상기 획득된 액체 상태의 쇼트닝을 피펫을 사용하여 상기 제1 시린지로 옮긴 상태에서 반고체 상태가 될 때까지 실온 또는 저온 배양기에서 보관하는 단계; 를 더 포함하는, 쇼트닝 배송물질 이용한 결정 시료 배송 방법.
- 제1항 또는 제2항에 있어서,
상기 결정 시료 배송 방법은 연속 밀리초 결정학 또는 연속 펨토초 결정학에 적용되는, 쇼트닝 배송물질 이용한 결정 시료 배송 방법.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160051995A1 (en) | 2013-04-30 | 2016-02-25 | John Spence | Apparatus and Methods for Lipidic Cubic Phase (LCP) Injection for Membrane Protein Investigations |
| US20160370306A1 (en) * | 2015-06-16 | 2016-12-22 | Arizona Board Of Regents On Behalf Of Arizona State University | Inert Crystal Delivery Medium for Serial Femtosecond Crystallography |
| US20190178822A1 (en) | 2017-05-22 | 2019-06-13 | Arizona Board Of Regents On Behalf Of Arizona State University | 3d printed microfluidic mixers and nozzles for crystallography |
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| US9275844B2 (en) * | 2012-05-16 | 2016-03-01 | The Board Of Trustees Of The Leland Stanford Junior University | Apparatus and method for nanoflow liquid jet and serial femtosecond x-ray protein crystallography |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160051995A1 (en) | 2013-04-30 | 2016-02-25 | John Spence | Apparatus and Methods for Lipidic Cubic Phase (LCP) Injection for Membrane Protein Investigations |
| US20160370306A1 (en) * | 2015-06-16 | 2016-12-22 | Arizona Board Of Regents On Behalf Of Arizona State University | Inert Crystal Delivery Medium for Serial Femtosecond Crystallography |
| US20190178822A1 (en) | 2017-05-22 | 2019-06-13 | Arizona Board Of Regents On Behalf Of Arizona State University | 3d printed microfluidic mixers and nozzles for crystallography |
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