"All we have discovered is that it starts with a single individual - always a child - and then spreads explosively, like the formation of crystals round the first nucleus in a saturated solution." Arthur C. Clarke (Childhood's End, 1953)
Service
Our customer service policy is simple: our attitude is friendly, respectful
and professional. All of our customers (JHU and non-JHU) receive equal
treatment. We provide expertise, quality results and prompt feedback
on samples. Our service can be tailored according to your needs. We
offer a broad variety of services, and we do accept
samples from both academic and non-academic institutions (a non-disclosure/confidentiality
agreement can be made on request). For non-JHU users, you can contact
the X-ray facility manager at xray@jhu.edu
so that an estimate of your needs can be made. We are also eager
for scientific collaborations.
Package I: This package includes crystal screening and is only concerned with protein X-ray crystallography. Crystal screening aims to: (i) differentiate whether the target crystal is concerned with a protein or a salt. (ii) investigate the quality of the diffraction (i.e., the maximum resolution at which the crystal diffracts). Note: this package does NOT include unit cell determination.
Package II: This package includes unit cell determination + crystal face indexing (optional). Intensities are typically measured at 110 K (the temperature can be selected from 100 to 300 K if necessary). CSD searches are always performed afterwards in order to check whether the crystal structures have been previously reported or are new. Results + additional files are provided via email the same day. Expected workload: 10-60 mins.
Package III: Same as package II (including crystal face indexing) + data collection/reduction + analytical absorption corrections. Intensities are typically measured at 110 K (the temperature can be selected from 100 to 300 K if necessary). Data resolution as high as 0.77-0.84 Å (or even higher if necessary) is generally desired. Results + .HKL file (data file) + additional files are provided via email within 2 weekdays. Expected workload: 1-2 days.
Package IV: Same as package III + structure solution/refinement. Results
+ finalized set of files (ZIP package) are provided via email within
a few weekdays. Expected workload: a few weekdays [1-2 days for straightforward
structures; several days up to weeks for difficult structures].
A typical data package type IV for a test crystal (sucrose) is available free
of charge here.
Pricing
(as of 09/01/2023)
JHU |
non-JHU Academic |
non-Academic |
|
Package I |
$10.00 per hour |
$15.00 per hour |
$40.00 per hour |
Package II |
$30.00 |
$37.00 |
$106.00 |
Package III |
$122.00 |
$138.00 |
$318.00 |
Package IV |
$249.00 |
$292.00 |
$716.00 |
Details about submission can be found here.
For a recent list of publications, please click here.
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