Re: [ccp4bb] new PDB file format

2023-04-03 Thread Gerard Kleywegt 

Hi Robbie,

Well, there is 1SRX (https://pdbe.org/1srx)) from 1976, CA-only, coordinate 
precision 0.05Å. The explanation is in the paper: "The maps were interpreted 
in terms of the known amino-acid sequence (2) and a skeletal model of one 
molecule was built with the Kendrew-type models using an optical 
comparator(13)." :-) (https://www.pnas.org/doi/epdf/10.1073/pnas.72.6.2305)


--Gerard





On Mon, 3 Apr 2023, Robbie Joosten wrote:


WHAT_CHECK has a check for suspiciously rounded coordinates. I have never seen 
it triggered.
Cheers,
Robbie

On 3 Apr 2023 10:11, James Holton  wrote:
  Thanks to everyone for being such good sports!

  It is good to know that there is still room for good-natured funny in 
what can be stressful times.

  Truth be told, I actually did do some experiments rounding off PDB 
coordinates to the nearest A.  You can try it with this
  one-line shell command:

cat refined.pdb |\
awk '! /^ATOM|^HETAT/{print;next}\
  {X=substr($0,31,8);Y=substr($0,39,8);Z=substr($0,47,8);\
   pre=substr($0,1,30);post=substr($0,55)}\
  {X=sprintf("%.0f",X);Y=sprintf("%.0f",Y);Z=sprintf("%.0f",Z)}\
  {printf("%s%8.3f%8.3f%8.3f%s\n",pre,X,Y,Z,post)}' |\
cat > roundoff.pdb

    These rounded-off structures look ... weird. And yes they really do 
crash validation programs.  Food for thought perhaps
  on what "resolution", rmsd, and especially GDT_TS really mean?

  -James Holton
  MAD Scientist


  On 4/1/2023 1:28 PM, Sweet, Robert wrote:

Knowing the author as I do, I checked the date and time, and wasn't fooled.


From: CCP4 bulletin board  on behalf of Carter, Charlie 

Sent: Saturday, April 1, 2023 4:06 PM
To: CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] new PDB file format

I fell for this momentarily, hence compliments to James. I was fooled by the 
absolutely sensible intro.

Charlie

On Apr 1, 2023, at 12:34 AM, James Holton  wrote:

Anyone who has ever had to lecture a student for writing their unit cell lengths to dozens of decimal places is going to love the new 
PDB format.  It is more compact, more realistic, and less misleading to the poor, downstream consumers of structural data.


Only a few structures in the PDB are better than 1.0 A, and none come even close to 0.1 A.  Nevertheless, the classic PDB file format 
always listed atomic coordinates to three decimal places!  That's implying a precision of 0.001 A, which is not supported by the resol

ution of the data.  At long last, this age-old error is being corrected.  From 
now on, coordinates will be listed to the nearest Angst
rom only.

An unexpected consequence of this is that R-free of a typical structure is 
going to rise from the current ~20% to well into the 40%s.
 This is, however, more consistent with high-impact structures published in 
big-named journals using modern, better data collection me
thods like XFELs and CryoEM, so we are going to call this an improvement.  
Besides, R factors are just cosmetic anyway.

Updated molprobity scores are not yet available while the authors fix bugs in their programs.  Right now, they return errors with the 
new, improved coordinates, such as:

line 272: 57012 Segmentation fault  (core dumped)

So, just as we all must adapt to Python 3 this new standard I'm sure will earn 
us all the thanks of future generations. They will no d
oubt be very grateful that we took these pains to protect them from the dangers 
of too many decimal places.

-James Holton
MAD Scientist



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Re: [ccp4bb] new PDB file format

2023-04-03 Thread Sweet, Robert 
Thanks for reliably tickling our funny bones.

BS

From: James Holton 
Sent: Monday, April 3, 2023 11:11 AM
To: CCP4BB@JISCMAIL.AC.UK
Cc: Sweet, Robert
Subject: Re: [ccp4bb] new PDB file format

Thanks to everyone for being such good sports!

It is good to know that there is still room for good-natured funny in what can 
be stressful times.

Truth be told, I actually did do some experiments rounding off PDB coordinates 
to the nearest A.  You can try it with this one-line shell command:

cat refined.pdb |\
awk '! /^ATOM|^HETAT/{print;next}\
  {X=substr($0,31,8);Y=substr($0,39,8);Z=substr($0,47,8);\
   pre=substr($0,1,30);post=substr($0,55)}\
  {X=sprintf("%.0f",X);Y=sprintf("%.0f",Y);Z=sprintf("%.0f",Z)}\
  {printf("%s%8.3f%8.3f%8.3f%s\n",pre,X,Y,Z,post)}' |\
cat > roundoff.pdb



  These rounded-off structures look ... weird. And yes they really do crash 
validation programs.  Food for thought perhaps on what "resolution", rmsd, and 
especially GDT_TS really mean?

-James Holton
MAD Scientist


On 4/1/2023 1:28 PM, Sweet, Robert wrote:

Knowing the author as I do, I checked the date and time, and wasn't fooled.


From: CCP4 bulletin board <mailto:CCP4BB@JISCMAIL.AC.UK> 
on behalf of Carter, Charlie <mailto:car...@med.unc.edu>
Sent: Saturday, April 1, 2023 4:06 PM
To: CCP4BB@JISCMAIL.AC.UK<mailto:CCP4BB@JISCMAIL.AC.UK>
Subject: Re: [ccp4bb] new PDB file format

I fell for this momentarily, hence compliments to James. I was fooled by the 
absolutely sensible intro.

Charlie



On Apr 1, 2023, at 12:34 AM, James Holton 
<mailto:jmhol...@lbl.gov> wrote:

Anyone who has ever had to lecture a student for writing their unit cell 
lengths to dozens of decimal places is going to love the new PDB format.  It is 
more compact, more realistic, and less misleading to the poor, downstream 
consumers of structural data.

Only a few structures in the PDB are better than 1.0 A, and none come even 
close to 0.1 A.  Nevertheless, the classic PDB file format always listed atomic 
coordinates to three decimal places!  That's implying a precision of 0.001 A, 
which is not supported by the resolution of the data.  At long last, this 
age-old error is being corrected.  From now on, coordinates will be listed to 
the nearest Angstrom only.

An unexpected consequence of this is that R-free of a typical structure is 
going to rise from the current ~20% to well into the 40%s.  This is, however, 
more consistent with high-impact structures published in big-named journals 
using modern, better data collection methods like XFELs and CryoEM, so we are 
going to call this an improvement.  Besides, R factors are just cosmetic anyway.

Updated molprobity scores are not yet available while the authors fix bugs in 
their programs.  Right now, they return errors with the new, improved 
coordinates, such as:
line 272: 57012 Segmentation fault  (core dumped)

So, just as we all must adapt to Python 3 this new standard I'm sure will earn 
us all the thanks of future generations. They will no doubt be very grateful 
that we took these pains to protect them from the dangers of too many decimal 
places.

-James Holton
MAD Scientist



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Re: [ccp4bb] new PDB file format

2023-04-03 Thread Robbie Joosten 
WHAT_CHECK has a check for suspiciously rounded coordinates. I have never seen it triggered.Cheers,RobbieOn 3 Apr 2023 10:11, James Holton  wrote:
Thanks to everyone for being such good sports!

It is good to know that there is still room for good-natured funny
in what can be stressful times.

Truth be told, I actually did do some experiments rounding off PDB
coordinates to the nearest A.  You can try it with this one-line
shell command:
cat refined.pdb |\
awk '! /^ATOM|^HETAT/{print;next}\
  {X=substr($0,31,8);Y=substr($0,39,8);Z=substr($0,47,8);\
   pre=substr($0,1,30);post=substr($0,55)}\
  {X=sprintf("%.0f",X);Y=sprintf("%.0f",Y);Z=sprintf("%.0f",Z)}\
  {printf("%s%8.3f%8.3f%8.3f%s\n",pre,X,Y,Z,post)}' |\
cat > roundoff.pdb


  These rounded-off structures look ... weird. And yes they really
do crash validation programs.  Food for thought perhaps on what
"resolution", rmsd, and especially GDT_TS really mean?

-James Holton
MAD Scientist


On 4/1/2023 1:28 PM, Sweet, Robert
  wrote:


  Knowing the author as I do, I checked the date and time, and wasn't fooled.


From: CCP4 bulletin board  on behalf of Carter, Charlie 
Sent: Saturday, April 1, 2023 4:06 PM
To: CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] new PDB file format

I fell for this momentarily, hence compliments to James. I was fooled by the absolutely sensible intro.

Charlie


  
On Apr 1, 2023, at 12:34 AM, James Holton  wrote:

Anyone who has ever had to lecture a student for writing their unit cell lengths to dozens of decimal places is going to love the new PDB format.  It is more compact, more realistic, and less misleading to the poor, downstream consumers of structural data.

Only a few structures in the PDB are better than 1.0 A, and none come even close to 0.1 A.  Nevertheless, the classic PDB file format always listed atomic coordinates to three decimal places!  That's implying a precision of 0.001 A, which is not supported by the resolution of the data.  At long last, this age-old error is being corrected.  From now on, coordinates will be listed to the nearest Angstrom only.

An unexpected consequence of this is that R-free of a typical structure is going to rise from the current ~20% to well into the 40%s.  This is, however, more consistent with high-impact structures published in big-named journals using modern, better data collection methods like XFELs and CryoEM, so we are going to call this an improvement.  Besides, R factors are just cosmetic anyway.

Updated molprobity scores are not yet available while the authors fix bugs in their programs.  Right now, they return errors with the new, improved coordinates, such as:
line 272: 57012 Segmentation fault  (core dumped)

So, just as we all must adapt to Python 3 this new standard I'm sure will earn us all the thanks of future generations. They will no doubt be very grateful that we took these pains to protect them from the dangers of too many decimal places.

-James Holton
MAD Scientist



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Re: [ccp4bb] new PDB file format

2023-04-03 Thread James Holton 

Thanks to everyone for being such good sports!

It is good to know that there is still room for good-natured funny in 
what can be stressful times.


Truth be told, I actually did do some experiments rounding off PDB 
coordinates to the nearest A.  You can try it with this one-line shell 
command:


cat refined.pdb |\
awk '! /^ATOM|^HETAT/{print;next}\
  {X=substr($0,31,8);Y=substr($0,39,8);Z=substr($0,47,8);\
   pre=substr($0,1,30);post=substr($0,55)}\
  {X=sprintf("%.0f",X);Y=sprintf("%.0f",Y);Z=sprintf("%.0f",Z)}\
  {printf("%s%8.3f%8.3f%8.3f%s\n",pre,X,Y,Z,post)}' |\
cat > roundoff.pdb

  These rounded-off structures look ... weird. And yes they really do 
crash validation programs.  Food for thought perhaps on what 
"resolution", rmsd, and especially GDT_TS really mean?


-James Holton
MAD Scientist


On 4/1/2023 1:28 PM, Sweet, Robert wrote:

Knowing the author as I do, I checked the date and time, and wasn't fooled.


From: CCP4 bulletin board  on behalf of Carter, 
Charlie
Sent: Saturday, April 1, 2023 4:06 PM
To:CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] new PDB file format

I fell for this momentarily, hence compliments to James. I was fooled by the 
absolutely sensible intro.

Charlie


On Apr 1, 2023, at 12:34 AM, James Holton  wrote:

Anyone who has ever had to lecture a student for writing their unit cell 
lengths to dozens of decimal places is going to love the new PDB format.  It is 
more compact, more realistic, and less misleading to the poor, downstream 
consumers of structural data.

Only a few structures in the PDB are better than 1.0 A, and none come even 
close to 0.1 A.  Nevertheless, the classic PDB file format always listed atomic 
coordinates to three decimal places!  That's implying a precision of 0.001 A, 
which is not supported by the resolution of the data.  At long last, this 
age-old error is being corrected.  From now on, coordinates will be listed to 
the nearest Angstrom only.

An unexpected consequence of this is that R-free of a typical structure is 
going to rise from the current ~20% to well into the 40%s.  This is, however, 
more consistent with high-impact structures published in big-named journals 
using modern, better data collection methods like XFELs and CryoEM, so we are 
going to call this an improvement.  Besides, R factors are just cosmetic anyway.

Updated molprobity scores are not yet available while the authors fix bugs in 
their programs.  Right now, they return errors with the new, improved 
coordinates, such as:
line 272: 57012 Segmentation fault  (core dumped)

So, just as we all must adapt to Python 3 this new standard I'm sure will earn 
us all the thanks of future generations. They will no doubt be very grateful 
that we took these pains to protect them from the dangers of too many decimal 
places.

-James Holton
MAD Scientist



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This message

Re: [ccp4bb] new PDB file format

2023-04-01 Thread Sweet, Robert 
Knowing the author as I do, I checked the date and time, and wasn't fooled.


From: CCP4 bulletin board  on behalf of Carter, Charlie 

Sent: Saturday, April 1, 2023 4:06 PM
To: CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] new PDB file format

I fell for this momentarily, hence compliments to James. I was fooled by the 
absolutely sensible intro.

Charlie

> On Apr 1, 2023, at 12:34 AM, James Holton  wrote:
>
> Anyone who has ever had to lecture a student for writing their unit cell 
> lengths to dozens of decimal places is going to love the new PDB format.  It 
> is more compact, more realistic, and less misleading to the poor, downstream 
> consumers of structural data.
>
> Only a few structures in the PDB are better than 1.0 A, and none come even 
> close to 0.1 A.  Nevertheless, the classic PDB file format always listed 
> atomic coordinates to three decimal places!  That's implying a precision of 
> 0.001 A, which is not supported by the resolution of the data.  At long last, 
> this age-old error is being corrected.  From now on, coordinates will be 
> listed to the nearest Angstrom only.
>
> An unexpected consequence of this is that R-free of a typical structure is 
> going to rise from the current ~20% to well into the 40%s.  This is, however, 
> more consistent with high-impact structures published in big-named journals 
> using modern, better data collection methods like XFELs and CryoEM, so we are 
> going to call this an improvement.  Besides, R factors are just cosmetic 
> anyway.
>
> Updated molprobity scores are not yet available while the authors fix bugs in 
> their programs.  Right now, they return errors with the new, improved 
> coordinates, such as:
> line 272: 57012 Segmentation fault  (core dumped)
>
> So, just as we all must adapt to Python 3 this new standard I'm sure will 
> earn us all the thanks of future generations. They will no doubt be very 
> grateful that we took these pains to protect them from the dangers of too 
> many decimal places.
>
> -James Holton
> MAD Scientist
>
> 
>
> To unsubscribe from the CCP4BB list, click the following link:
> https://urldefense.com/v3/__https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB=1__;!!P4SdNyxKAPE!ECaCTTUpkh0GiKsgPTrUPapiNQyfraviFZihjo4vAPSbqkc4WhS0JVEl4ifyHotrj2BBLf-fqN5MCD8m$
>
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Re: [ccp4bb] new PDB file format

2023-04-01 Thread Carter, Charlie 
I fell for this momentarily, hence compliments to James. I was fooled by the 
absolutely sensible intro.

Charlie

> On Apr 1, 2023, at 12:34 AM, James Holton  wrote:
> 
> Anyone who has ever had to lecture a student for writing their unit cell 
> lengths to dozens of decimal places is going to love the new PDB format.  It 
> is more compact, more realistic, and less misleading to the poor, downstream 
> consumers of structural data.
> 
> Only a few structures in the PDB are better than 1.0 A, and none come even 
> close to 0.1 A.  Nevertheless, the classic PDB file format always listed 
> atomic coordinates to three decimal places!  That's implying a precision of 
> 0.001 A, which is not supported by the resolution of the data.  At long last, 
> this age-old error is being corrected.  From now on, coordinates will be 
> listed to the nearest Angstrom only.
> 
> An unexpected consequence of this is that R-free of a typical structure is 
> going to rise from the current ~20% to well into the 40%s.  This is, however, 
> more consistent with high-impact structures published in big-named journals 
> using modern, better data collection methods like XFELs and CryoEM, so we are 
> going to call this an improvement.  Besides, R factors are just cosmetic 
> anyway.
> 
> Updated molprobity scores are not yet available while the authors fix bugs in 
> their programs.  Right now, they return errors with the new, improved 
> coordinates, such as:
> line 272: 57012 Segmentation fault  (core dumped)
> 
> So, just as we all must adapt to Python 3 this new standard I'm sure will 
> earn us all the thanks of future generations. They will no doubt be very 
> grateful that we took these pains to protect them from the dangers of too 
> many decimal places.
> 
> -James Holton
> MAD Scientist
> 
> 
> 
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> https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB=1
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Re: [ccp4bb] new PDB file format

2023-04-01 Thread Goldman, Adrian 
And the good thing is we won’t be needed any more! - as alphafold structures 
will be just as good! ;)

Adrian

Sent from my iPhone

On 1 Apr 2023, at 18:06, Kolenko, Petr 
<9d229ba2f5a3-dmarc-requ...@jiscmail.ac.uk> wrote:


Dear James,
what a great step forward! I see another point. In our programs, the 
coordinates will no longer need to be floats, doubles or whatever. They can 
easily be integers! I believe that this will dramatically speed up the process 
of refinement. 
Best regards,
Petr

Od: CCP4 bulletin board  za uživatele James Holton 

Odesláno: sobota 1. dubna 2023 6:34
Komu: CCP4BB@JISCMAIL.AC.UK 
Předmět: [ccp4bb] new PDB file format

Anyone who has ever had to lecture a student for writing their unit cell
lengths to dozens of decimal places is going to love the new PDB
format.  It is more compact, more realistic, and less misleading to the
poor, downstream consumers of structural data.

Only a few structures in the PDB are better than 1.0 A, and none come
even close to 0.1 A.  Nevertheless, the classic PDB file format always
listed atomic coordinates to three decimal places!  That's implying a
precision of 0.001 A, which is not supported by the resolution of the
data.  At long last, this age-old error is being corrected.  From now
on, coordinates will be listed to the nearest Angstrom only.

An unexpected consequence of this is that R-free of a typical structure
is going to rise from the current ~20% to well into the 40%s.  This is,
however, more consistent with high-impact structures published in
big-named journals using modern, better data collection methods like
XFELs and CryoEM, so we are going to call this an improvement.  Besides,
R factors are just cosmetic anyway.

Updated molprobity scores are not yet available while the authors fix
bugs in their programs.  Right now, they return errors with the new,
improved coordinates, such as:
line 272: 57012 Segmentation fault  (core dumped)

So, just as we all must adapt to Python 3 this new standard I'm sure
will earn us all the thanks of future generations. They will no doubt be
very grateful that we took these pains to protect them from the dangers
of too many decimal places.

-James Holton
MAD Scientist



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Re: [ccp4bb] new PDB file format

2023-04-01 Thread Kolenko, Petr 
Dear James,
what a great step forward! I see another point. In our programs, the 
coordinates will no longer need to be floats, doubles or whatever. They can 
easily be integers! I believe that this will dramatically speed up the process 
of refinement. 
Best regards,
Petr

Od: CCP4 bulletin board  za uživatele James Holton 

Odesláno: sobota 1. dubna 2023 6:34
Komu: CCP4BB@JISCMAIL.AC.UK 
Předmět: [ccp4bb] new PDB file format

Anyone who has ever had to lecture a student for writing their unit cell
lengths to dozens of decimal places is going to love the new PDB
format.  It is more compact, more realistic, and less misleading to the
poor, downstream consumers of structural data.

Only a few structures in the PDB are better than 1.0 A, and none come
even close to 0.1 A.  Nevertheless, the classic PDB file format always
listed atomic coordinates to three decimal places!  That's implying a
precision of 0.001 A, which is not supported by the resolution of the
data.  At long last, this age-old error is being corrected.  From now
on, coordinates will be listed to the nearest Angstrom only.

An unexpected consequence of this is that R-free of a typical structure
is going to rise from the current ~20% to well into the 40%s.  This is,
however, more consistent with high-impact structures published in
big-named journals using modern, better data collection methods like
XFELs and CryoEM, so we are going to call this an improvement.  Besides,
R factors are just cosmetic anyway.

Updated molprobity scores are not yet available while the authors fix
bugs in their programs.  Right now, they return errors with the new,
improved coordinates, such as:
line 272: 57012 Segmentation fault  (core dumped)

So, just as we all must adapt to Python 3 this new standard I'm sure
will earn us all the thanks of future generations. They will no doubt be
very grateful that we took these pains to protect them from the dangers
of too many decimal places.

-James Holton
MAD Scientist



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Re: [ccp4bb] new PDB file format

2023-04-01 Thread CCP4BB 
My suspicions were raised when a post by James to this BB didn't run to several 
pages...

Harry
--
Dr Harry Powell

> On 1 Apr 2023, at 08:14, Eleanor Dodson 
> <176a9d5ebad7-dmarc-requ...@jiscmail.ac.uk> wrote:
> 
> Ha ha!
> 
>> On Sat, 1 Apr 2023 at 05:34, James Holton  wrote:
>> Anyone who has ever had to lecture a student for writing their unit cell 
>> lengths to dozens of decimal places is going to love the new PDB 
>> format.  It is more compact, more realistic, and less misleading to the 
>> poor, downstream consumers of structural data.
>> 
>> Only a few structures in the PDB are better than 1.0 A, and none come 
>> even close to 0.1 A.  Nevertheless, the classic PDB file format always 
>> listed atomic coordinates to three decimal places!  That's implying a 
>> precision of 0.001 A, which is not supported by the resolution of the 
>> data.  At long last, this age-old error is being corrected.  From now 
>> on, coordinates will be listed to the nearest Angstrom only.
>> 
>> An unexpected consequence of this is that R-free of a typical structure 
>> is going to rise from the current ~20% to well into the 40%s.  This is, 
>> however, more consistent with high-impact structures published in 
>> big-named journals using modern, better data collection methods like 
>> XFELs and CryoEM, so we are going to call this an improvement.  Besides, 
>> R factors are just cosmetic anyway.
>> 
>> Updated molprobity scores are not yet available while the authors fix 
>> bugs in their programs.  Right now, they return errors with the new, 
>> improved coordinates, such as:
>> line 272: 57012 Segmentation fault  (core dumped)
>> 
>> So, just as we all must adapt to Python 3 this new standard I'm sure 
>> will earn us all the thanks of future generations. They will no doubt be 
>> very grateful that we took these pains to protect them from the dangers 
>> of too many decimal places.
>> 
>> -James Holton
>> MAD Scientist
>> 
>> 
>> 
>> To unsubscribe from the CCP4BB list, click the following link:
>> https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB=1
>> 
>> This message was issued to members of www.jiscmail.ac.uk/CCP4BB, a mailing 
>> list hosted by www.jiscmail.ac.uk, terms & conditions are available at 
>> https://www.jiscmail.ac.uk/policyandsecurity/
> 
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Re: [ccp4bb] new PDB file format

2023-04-01 Thread Eleanor Dodson 
Ha ha!

On Sat, 1 Apr 2023 at 05:34, James Holton  wrote:

> Anyone who has ever had to lecture a student for writing their unit cell
> lengths to dozens of decimal places is going to love the new PDB
> format.  It is more compact, more realistic, and less misleading to the
> poor, downstream consumers of structural data.
>
> Only a few structures in the PDB are better than 1.0 A, and none come
> even close to 0.1 A.  Nevertheless, the classic PDB file format always
> listed atomic coordinates to three decimal places!  That's implying a
> precision of 0.001 A, which is not supported by the resolution of the
> data.  At long last, this age-old error is being corrected.  From now
> on, coordinates will be listed to the nearest Angstrom only.
>
> An unexpected consequence of this is that R-free of a typical structure
> is going to rise from the current ~20% to well into the 40%s.  This is,
> however, more consistent with high-impact structures published in
> big-named journals using modern, better data collection methods like
> XFELs and CryoEM, so we are going to call this an improvement.  Besides,
> R factors are just cosmetic anyway.
>
> Updated molprobity scores are not yet available while the authors fix
> bugs in their programs.  Right now, they return errors with the new,
> improved coordinates, such as:
> line 272: 57012 Segmentation fault  (core dumped)
>
> So, just as we all must adapt to Python 3 this new standard I'm sure
> will earn us all the thanks of future generations. They will no doubt be
> very grateful that we took these pains to protect them from the dangers
> of too many decimal places.
>
> -James Holton
> MAD Scientist
>
> 
>
> To unsubscribe from the CCP4BB list, click the following link:
> https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB=1
>
> This message was issued to members of www.jiscmail.ac.uk/CCP4BB, a
> mailing list hosted by www.jiscmail.ac.uk, terms & conditions are
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>



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