t Rfree?" "is it CV?" "is it bigger than a breadbox?" type
>> stuff.
>>
>> Again, I know the sftools documentation is clear that the design goal was
>> for interactive use and humans have little trouble with such questions, but
>> when there might be several thousand of them...
>>
>> Thanks for any pointers or alternatives!
>>
>> Seth
>>
>>
>>
>
--
Bart Hazes
Associate Professor
Dept. of Medical Microbiology & Immunology
University of Alberta
ason you invoke cannot be applied to other
> features of this LUCA which are indeed seen to be variable.
>
> JPK
>
>
> ***
>
> Jacob Pearson Keller, PhD
>
> Looger Lab/HHMI Janelia Farms Research Campus
>
> 19700 Helix Dr, As
7;t
>> initiation occur also at methionines in the middle of proteins? I'm
>> guessing it has to do with 5' untranslated region and ribosome binding
>> sites. So could the start codon actually be anything you want, provided
>> there is a strong ribosome binding site there?
>>
>> Just be
mafft and muscle are both faster than clustalw and on average more
accurate. You can also use different options for mafft to push for speed
or accuracy depending on your needs and patience. Tcoffee has a flavour
that includes structural information if available to assist alignment.
Another flav
I am confused by the discussion on this message. Although it says
plane group I assume it really is a normal 3D tetragonal space
group, P42(1)2
So Eleanor's suggestion should work and sftools expand command will
do the job as well.
Bart
On 12-04-12
many messages I got after the server
relocation. SSBOND will soon get some competition for most used service
as I am about to release some bioinformatics services.
Bart
On 12-03-04 02:36 AM, Frederic VELLIEUX wrote:
I'd google for "Bart Hazes" and "SSBOND" myself. T
On 12-02-21 10:11 AM, Björn Kauppi wrote:
Hi all,
I recently encountered a modified surface cysteine residue in one of my
structures. The protein is expressed in E.coli and my data is to 1.7Å so I am
positive of the number of extra atoms. It really look like one of the tails
(the Propanoic a
a sets the
wavelength sweet spot with a pilatus detector may be a bit longer then
what used to be optimal for a given beamline on a previous generation
detector.
Bart
On 12-02-16 02:09 AM, A Leslie wrote:
On 15 Feb 2012, at 23:55, Bart Hazes wrote:
Diffracted intensity goes up by the cube of the
Diffracted intensity goes up by the cube of the wavelength, but so does
absorption and I don't know exactly about radiation damage. One
interesting point is that on image plate and CCD detectors the signal is
also proportional to photon energy, so doubling the wavelength gives 8
times diffract
On 12-02-06 08:37 AM, wtempel wrote:
Hello,
here is a question about the EXPAND command in SFTOOLS, specifically
its effect on a free reflection flag. Do the flag values get copied to
newly generated reflections based on symmetry, for example in the case
of a P622 -> P6 expansion?
many thanks,
W
On 12-01-24 11:20 AM, Jacob Keller wrote:
Inspired by the recent post about "quasispecies:"
I have been bothered recently by the following problem: why do species
of genetic uniformity exist at all (or do they?)? This first came up
when I saw a Nature paper describing live bacteria extracted fro
On 12-01-24 09:36 AM, Ian Tickle wrote:
On 24 January 2012 14:19, David Schuller wrote:
On 01/24/12 00:41, Bart Hazes wrote:
www.cs.siue.edu/~astefik/papers/StefikPlateau2011.pdf
An Empirical Comparison of the Accuracy Rates of Novices using the Quorum,
Perl, and Randomo Programming Languages
On 12-01-24 08:39 AM, Regina Kettering wrote:
We have a Honeybee system but do not usually use
proteases. The biggest problem we have found is that if
anything precipitates in the tips they have to be washed
very well, usually wit
On 12-01-23 09:59 PM, Ethan Merritt wrote:
On Monday, 23 January 2012, Yuri Pompeu wrote:
Hello Everyone,
I want to play around with some coding/programming. Just simple calculations
from an
input PDB file, B factors averages, occupancies, molecular weight, so forth...
What should I use python,
can definitely come up with a script that
converts a
pdb file into a list of "point" statements.
--
"Hurry up before we all come back to our senses!"
Julian, King of Lemurs
--
=====
point electron
density for every atom in a structure?
If I would have to bring a dependency into this, the best choice for me
would be clipper libs.
Thanks in advance,
Ed.
--
====
Bart Hazes (Associate Professor)
Dept. of Me
best wishes.
--
====
Bart Hazes (Associate Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edm
ova - ITALY tel. +39.049.7923236 fax
+39.049.7923250 www.vimm.it
--
====
Bart Hazes (Associate Professor)
Dept. of Medical Microbiology& Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
phone: 1-780-492-0042
fax:1-780-492-7521
7
fax. +39.049.8275239
roberto.battistu...@unipd.it
www.chimica.unipd.it/roberto.battistutta/
VIMM (Venetian Institute of Molecular Medicine)
via Orus 2, 35129 Padova - ITALY
tel. +39.049.7923236
fax +39.049.7923250
www.vimm.it
--
========
tion is not in
the cards.
Bart
On 10-10-29 10:08 AM, David Goldstone wrote:
Dear All,
Does anyone have any insight into what the circles around the spots
might be?
cheers
Dave
--
====
Bart Hazes (Associate Pr
peptide
> flips, 120 degree changes in side chain dihedrals, etc. If you can
find
> and fix one of those errors a lot of the stereochemical
distortions and
> non-ideal fit to density surrounding that residue will suddenly
> disappear as well.
>
> The benefit of high resolution is t
on-ideal fit to density surrounding that residue will suddenly
disappear as well.
The benefit of high resolution is that it is much easier to pick up and
fix such errors (or not make them in the first place)
Bart
--
=====
mas? Or
let's say I experimentally decrease I/sigma by attenuating the beam and
collect another data set--same situation?
JPK
-
Original Message -
From:
Bart Hazes
To:
CCP4BB@JISCMAIL.AC.UK
Sent:
Thursday, October 28, 2010 4:13 PM
Subject:
Re: [ccp
; > > for the R? Isn't Rmerge a poorly defined measure
itself that
>> > > deteriorates at least in some circumstances (e.g.
increased redundancy)?
>> > > Specifically, shouldn't "ideal" R approximate
0.5*/?
>> > >
>> > > Cheers,
>> > >
>> > > Ed.
>>
the last time we
needed it) and it does not refine occupancy.
Bart
On 10-10-20 03:34 PM, Frederic VELLIEUX wrote:
Bart Hazes wrote a program (and published as well, Hazes
& Dijkstra perhaps) called SSBOND I think. I cannot remember
exactly what the computer program does, but it certainly h
r diffrent fractions lead to interference
on most angles the results cancel out
when they are not on a common wavelength you get loud distraction
there is no single outcome until the polls measure something
Bart
--
====
Bernard's post) they
should be considered independent events. So the photon rate can probably
be 5 to 6 orders of magnitude higher while still doing "single photon
diffraction" experiments.
Bart
--
======
N THE CRYSTAL at once.
A minor point: the interaction is not really "at once," is it? The
photon does have to move through the crystal over a finite time.
JPK
--
========
Bart Hazes (Associate Professor)
Dept.
ing factors for f0 and f' or f" will be much less noticeable for anomalous scatters with high B-values where the latter dominates the 3D distribution of the electrons.
Bart
====
Bart Hazes (Associate Professor)
De
4th Street, Box 2532
San Francisco, CA 94158
Phone: (415)514-2836
***
Jacob Pearson Keller
Northwestern University
Medical Scientist Training Program
Dallos Laboratory
F. Searle 1-240
2240 Campus Drive
Evanston IL 60208
lab: 847.491.2438
cel: 773.608.918
hell script.
Thanks!
Best Regards, Hailiang
--
====
Bart Hazes (Associate Professor)
Dept. of Medical Microbiology& Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
ph
reuder
--
Bart Hazes (Associate Professor)
Dept. of Medical Microbiology& Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
phone: 1-780-492-0042
fax:1-780-492-7521
: 773.608.9185
email: j-kell...@northwestern.edu
***
--
Bart Hazes (Associate Professor)
Dept. of Medical Microbiology& Immunology
University of Alberta
1-15 Medical Scie
--
Bart Hazes (Associate Professor)
Dept. of Medical Microbiology& Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
phone: 1-780-492-0042
fax:1-780-492-7521
static.
Bart
--
========
Bart Hazes (Associate Professor)
Dept. of Medical Microbiology& Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
phone: 1-780-492-0042
fax:1-780-492-7521
idt
>>> Asst. Professor
>>> University of Wisconsin-Milwaukee
>>> Department of Physics Room 454
>>> 1900 E. Kenwood Blvd.
>>> Milwaukee, WI 53211
>>>
>>> phone: +1-414-229-4338
>>> email: m-schm...@uwm.edu
>>> http://users.physik.tu-muenchen.de/marius/
>>
Dr.habil. Marius Schmidt
Asst. Professor
University of Wisconsin-Milwaukee
Department of Physics Room 454
1900 E. Kenwood Blvd.
Milwaukee, WI 53211
phone: +1-414-229-4338
email: m-schm...@uwm.edu
http://users.physik.tu-muenchen.de/marius/
--
===
* *
* Gerard Bricogne g...@globalphasing.com *
* *
* Global Phasing Ltd. *
* Sheraton House, Castle Park Tel: +44-(0)1223-353033 *
* Cambridge CB3 0AX, UK Fax: +44-(0)1223-366889 *
* *
===
--
Bart Hazes (Associate Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
phone: 1-780-492-0042
fax:1-780-492-7521
n be done?
Thanks
FR
-
Francis Reyes M.Sc.
215 UCB
University of Colorado at Boulder
gpg --keyserver pgp.mit.edu --recv-keys 67BA8D5D
8AE2 F2F4 90F7 9640 28BC 686F 78FD 6669 67BA 8D5D
--
====
B
il: j-kell...@northwestern.edu
***
--
====
Bart Hazes (Associate Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton,
.72 55.0777.06 52.10 57.35
56.51
- --- --- --- --- --- ---
---
* total : 5601631.39% 30.88% 20.91% 24.72% 16.90% 13.95%
17.97%
--
asymmetric
unit. The free R-factor is lower than the R-factor. I expect that
future referees will not view that kindly.
A number of people have suggested to use different approaches to get
rid of this reciprocal space binding effect. One of these people (Bart
Hazes I think, correct me i
contacting
residues
which I can then mutate to CYS in order to introduce an intermolecular
disulfide bond to stabilize the biological assembly?
Your input is greatly appreciated!
Jie Liu
--
Bart Hazes
Hi Francis,
The asymmetric unit volume is approximately proportional to the number
of atoms in your model, the basis for Vm, with some variation due to
solvent content. In turn the number of unique observations at a given
resolution is proportional to asymmetric unit volume. So twice the
numb
Leiman Petr wrote:
Every other week this question comes up!
This is Geometry 101 or beginner's geometry!!!
http://www.euclideanspace.com/maths/algebra/vectors/angleBetween/index.htm
I am not sure if it possible to understand _anything_ in crystallography if it is not clear how to calculate an a
SFTOOLS should read the phs file and allow you to write it out in a
number of different formats, including MTZ.
From the command line type:
sftools
read yourfile.phs
write yourfile.mtz
quit
The program will ask a bunch of questions to get space group, unit cell etc.
Bart
John Bruning wrote:
Must be even smaller than Daresbury then. They don't even have a
synchrotron!
Bart
James Holton wrote:
Paul Emsley wrote:
Here's an experiment:
Find a blindfold and put it on. Oh, but before you do that, take a
map of England and place it on a dartboard.
Now take 56066 darts and throw them
Hi Rana,
You probably have multiple options suggested to you. One is sftools
using the CALC command. If the subtraction includes a phase then sftools
can also do the calculation on the full structure factor.
Plain subtraction of amplitudes ensuring the result is >= 0
READ yourfile.mtz
CALC
email. E-mail is susceptible to data corruption, interception, unauthorized amendment, and tampering, Astex Therapeutics Ltd only send and receive e-mails on the basis that the Company is not liable for any such alteration or any consequences thereof.
Astex Therapeutics Ltd., Registered in England
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cel: 773.608.9185
email: [EMAIL PROTECTED]
*******
- Original Message - From: "Bart Hazes" <[EMAIL PROTECTED]>
To:
Sent: Wednesday, July 23, 2008 10:05 AM
Subject: Re: [ccp4bb] Using
strengths in different areas.
HTH,
Kay
--
======
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
pho
ll.
Bart
======
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
phone: 1-780-492-0042
fax:1-780-492-7521
==
mical reaction is a "free radical" reaction
(since they involve the movement of electrons). I think it best that
we try to call the chemistry what it is and try to stamp out rumors that
mechanisms are known when in reality they are not.
Just my little rant.
-James Holton
MA
e (2) slows up the
robotics a little, but both should be trivial to set up..
--
======
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Buildi
nsight,
Kay
--
Kay Diederichshttp://strucbio.biologie.uni-konstanz.de
email: [EMAIL PROTECTED]Tel +49 7531 88 4049 Fax 3183
Fachbereich Biologie, Universität Konstanz, Box M647, D-78457 Konstanz
--
===
i.nlm.nih.gov/pubmed/10476961?ordinalpos=6&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum>
Placement of protein and RNA structures into a 5 A-resolution map of the
50S ribosomal subunit.
Nature. 1999 Aug 26;400(6747):841-7.
On 03/04/2008, at 17.48, Bart Hazes wro
pts.iucr.org/cgi-bin/paper?S0907444903007947>S They suggest
using neighbouring reflections pairs to test . This can often overcome
the problem associated with pseudo-translation. However it is quite
sensitive to data quality.
See http://nihserver.mbi.ucla.edu/pystats/
Eleanor
Bart Ha
983 and
properly dispose of this information.
--
==
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
phone: 1-780-492-0042
fax:1-780-492-7521
==
who you talk
to) and no problems leading to systematic errors or outliers.
Bart
==
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
E
eption, unauthorized amendment, and tampering, Astex Therapeutics Ltd only send and receive e-mails on the basis that the Company is not liable for any such alteration or any consequences thereof.
Astex Therapeutics Ltd., Registered in England at 436 Cambridge Science Park,
Cambridge CB4 0QA under nu
tive* restraint is counted.
The question of inactive restraints becomes relevant when considering
e.g. VDW restraints which normally only become active when the distance
becomes less than a threshold.
-- Ian
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf
n't have a clear explanation for why, and of course I could be wrong on this.
Thanks,
Pete
* Rough translation - I'm about to ask another stupid question. Not like it's
the first time.
--
========
Dale Tronrud wrote:
Bart Hazes wrote:
Dale Tronrud wrote:
[EMAIL PROTECTED] wrote:
> Rotational near-crystallographic ncs is easy to handle this way, but
> what about translational pseudo-symmetry (or should that be
> pseudo-translational symmetry)? In such cases one whole set
imum likelihood
refinement or to make general refinement strategy choices.
Bart
======
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmon
h me as long as you
indicate in the legend what map and carve settings were used.
Bart
--
======
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Bui
and too pessimistic?
Mark J. van Raaij
Unidad de Bioquímica Estructural
Dpto de Bioquímica, Facultad de Farmacia
and
Unidad de Rayos X, Edificio CACTUS
Universidad de Santiago
15782 Santiago de Compostela
Spain
http://web.usc.es/~vanraaij/
--
====
P6, P312 and P321, all of course suggest twinning.
I would thank suggestions, point to similar cases, etc... In fact,
currently I wondered why refinement programs take B-factor to such low
values
Many thanks,
Jorge
--
=======
Francisco #3
Chicago IL 60645
(847)467-4049
[EMAIL PROTECTED]
***
--
==
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
phone: 1-780-492-0042
fax:1-780-492-7521
==
happening.
-
--
======
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Albert
xplanation of the convolution theorem on this particular case is very
useful as a reminder of this important concept.
Bart
Kay Diederichs wrote:
Bart Hazes schrieb:
...
W.r.t. Kay's reply I think the argument does not hold since it depends
on how badly the data is truncated. E.g. tru
e to get rid of the
"ripples".
best,
Kay
--
======
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
phone: 1-780-492-0042
fax:1-780-492-7521
==
graphics is for
crystallographers. I personally think its a wonderful teaching tool
which is currently under-utilized.
Paul
From: Bart Hazes <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To: CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] Survey on computer usage in crystallography
Date: W
as a Virtual Reality headset)?"
That does not cover all the choices currently available, let alone what
I wish were available.
--
======
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Imm
quares fit (following a reference I don't have in front of
me...this was a while ago), which didn't result in a good fit for our
data.
Pete
Pete Meyer
Fu Lab
BMCB grad student
Cornell University
--
===
he message from your computer and network.
--
======
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
address
(http://eagle.mmid.med.ualberta.ca/).
Cheers, Bart
==
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G
hology.
Thanks in advance,
Dan
--
======
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
phone: 1-780-492-0042
fax:1-780-492-7521
==
James Holton wrote:
I generally cut off integration at the shell wheree I/sigI < 0.5 and
then cut off merged data where MnI/sd(I) ~ 1.5. It is always easier
to to cut off data later than to re-integrate it. I never look at
the Rmerge, Rsym, Rpim or Rwhatever in the highest resolution shell.
Don't you get a false sense of details when the missing reflections are
filled in with DFc when computing a 2MFo-DFc map?
P
--
======
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immuno
;t let the crystals diffract to their
full potential. You can't really reject papers for that reason, but
there appears to be a conservative epidemic when it comes to restricting
the resolution of the data set.
Bart
--
======
ng themselves made President should on
no account be allowed to do the job. - Douglas Adams
--
======
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical
ermalink
Pete A
--
==
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
phone: 1-780-492-0042
fax:1-780-492-7521
==
--
==
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
phone: 1-780-492-0042
fax:1-780-492-
found, is going to be.
Bart
======
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences Building
Edmonton, Alberta
Canada, T6G 2H7
phone: 1-780-492-0042
fax:1-780-492-7521
==
apeutics Ltd. The recipient should check this email and any
attachments for the presence of computer viruses. Astex Therapeutics Ltd
accepts no liability for damage caused by any virus transmitted by this email.
E-mail is susceptible to data corruption, interception, unauthorized amendment,
and tamp
shorter than that. Hence the predominant use of wavelengths
in the 1 to 1.5 Angstrom range.
Bart
==
Bart Hazes (Assistant Professor)
Dept. of Medical Microbiology & Immunology
University of Alberta
1-15 Medical Sciences B
ecessarily the case if the search is hard because your
search models individually constitute only a small part of the
asymmetric unit. Say that 80% of the AU consists of multiple
different proteins with known structure; the phase information would
be very high if you find the solutions.
Filip
On 1/2
I'd like to add that the value of a molecular replacement solution tends
to be inversely correlated with the effort needed to find the solution.
In other words, the harder you have to work to find the MR solution the
less informative the phase information you tend to get. When you have
very hig
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