<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:10pt"><div style="font-family: arial, helvetica, sans-serif; font-size: 10pt;"><span>Dear Tim-</span></div><div style="font-family: arial, helvetica, sans-serif; font-size: 13.333333015441895px; color: rgb(0, 0, 0); background-color: transparent; font-style: normal;"><span>this can be a problem because PDB rule is that the unique non- anomalous is used for reflection count* And if the data collection remark (Remark 200) follows that and quotes for unique; while the refinement (Remark 3) quotes total used (anomalous) it can be difficult to check what fraction of the 'Unique' data was used (I know you will say 'all of the data' but it is nice to see the numbers match... just as a check).</span><span style="background-color: transparent;"> May have been sorted with mmCif categories - don't know about new deposition system with that
format.</span></div><div style="font-family: arial, helvetica, sans-serif; font-size: 13.333333015441895px; color: rgb(0, 0, 0); background-color: transparent; font-style: normal;"><span>all the best</span></div><div style="font-family: arial, helvetica, sans-serif; font-size: 13.333333015441895px; color: rgb(0, 0, 0); background-color: transparent; font-style: normal;"><span>Martyn</span></div><div style="font-family: arial, helvetica, sans-serif; font-size: 13.333333015441895px; color: rgb(0, 0, 0); background-color: transparent; font-style: normal;"><span>Cambridge</span></div><div style="background-color: transparent;"><span><font size="2">*http://www.wwpdb.org/documentation/format32/remarks1.html#REMARKs 200-265</font></span></div><div style="font-family: arial, helvetica, sans-serif; font-size: 10pt;"><br></div> <div style="font-family: arial, helvetica, sans-serif; font-size: 10pt;"> <div style="font-family: 'times new roman', 'new york', times,
serif; font-size: 12pt;"> <div dir="ltr"> <hr size="1"> <font size="2" face="Arial"> <b><span style="font-weight:bold;">From:</span></b> Tim Gruene <tg@shelx.uni-ac.gwdg.de><br> <b><span style="font-weight: bold;">To:</span></b> phenixbb@phenix-online.org <br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, 26 February 2014, 9:25<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [phenixbb] observed reflections error?<br> </font> </div> <div class="y_msg_container"><br>-----BEGIN PGP SIGNED MESSAGE-----<br>Hash: SHA1<br><br>Dear J,<br><br>if I understood George Sheldrick correctly, scaling under the<br>assumption that Friedel's Law holds is actually the method of choice:<br>the doubled multiplicity is important for stable scaling and<br>apparently does not hamper with the Bijvoet differences.<br><br>I assume this is why it is the default in most scaling programs to not<br>take anomalous differences into
account.<br><br>Is there a reason why you worry about the different counting, now that<br>you now the reason?<br><br>Best,<br>Tim<br><br>On 02/25/2014 09:48 PM, Joel Tyndall wrote:<br>> Hi all,<br>> <br>> Indeed this is the source of the discrepancy as we scaled our data<br>> without separating anomalous data. I am in the process of<br>> "reprocessing" with this data but another workaround is to not use<br>> the anomalous data under Data - options> advanced - no anomalous.<br>> (Thanks Boaz)<br>> <br>> Cheers<br>> <br>> J<br>> <br>> From: Nathaniel Echols [mailto:<a ymailto="mailto:nechols@lbl.gov" href="mailto:nechols@lbl.gov">nechols@lbl.gov</a>] Sent: Tuesday, 25<br>> February 2014 10:21 a.m. To: Joel Tyndall Cc:<br>> <a ymailto="mailto:phenixbb@phenix-online.org" href="mailto:phenixbb@phenix-online.org">phenixbb@phenix-online.org</a> Subject: Re: [phenixbb] observed<br>> reflections error?<br>>
<br>> Unlike most other programs, phenix.refine counts F+ and F- as<br>> separate reflections if both are present in the MTZ file - could<br>> this be the source of the discrepancy?<br>> <br>> -Nat<br>> <br>> On Mon, Feb 24, 2014 at 1:17 PM, Joel Tyndall<br>> <<a ymailto="mailto:joel.tyndall@otago.ac.nz" href="mailto:joel.tyndall@otago.ac.nz">joel.tyndall@otago.ac.nz</a><mailto:<a ymailto="mailto:joel.tyndall@otago.ac.nz" href="mailto:joel.tyndall@otago.ac.nz">joel.tyndall@otago.ac.nz</a>>> wrote: <br>> Hi all,<br>> <br>> I have a minor issue with phenix reporting the number of observed<br>> reflections in the output pdb file where it appears to be roughly<br>> double (120080 ) to what is actually in an mtz file (~65000) from<br>> scala.<br>> <br>> Any suggestions where this number might originate from?<br>> <br>> Joel<br>> <br>> _________________________________ Joel Tyndall,
PhD<br>> <br>> Associate Professor in Medicinal Chemistry National School of<br>> Pharmacy University of Otago PO Box 56 Dunedin 9054 New Zealand <br>> Skype: jtyndall<br>> <br>> Ph: +64 3 479 7293<tel:%2B64%203%20479%207293><br>> <br>> <br>> _______________________________________________ phenixbb mailing<br>> list <a ymailto="mailto:phenixbb@phenix-online.org" href="mailto:phenixbb@phenix-online.org">phenixbb@phenix-online.org</a><mailto:<a ymailto="mailto:phenixbb@phenix-online.org" href="mailto:phenixbb@phenix-online.org">phenixbb@phenix-online.org</a>> <br>> <a href="http://phenix-online.org/mailman/listinfo/phenixbb" target="_blank">http://phenix-online.org/mailman/listinfo/phenixbb</a><br>> <br>> <br>> <br>> <br>> _______________________________________________ phenixbb mailing<br>> list <a ymailto="mailto:phenixbb@phenix-online.org"
href="mailto:phenixbb@phenix-online.org">phenixbb@phenix-online.org</a> <br>> <a href="http://phenix-online.org/mailman/listinfo/phenixbb" target="_blank">http://phenix-online.org/mailman/listinfo/phenixbb</a><br>> <br><br>- -- <br>- --<br>Dr Tim Gruene<br>Institut fuer anorganische Chemie<br>Tammannstr. 4<br>D-37077 Goettingen<br><br>GPG Key ID = A46BEE1A<br><br>-----BEGIN PGP SIGNATURE-----<br>Version: GnuPG v1.4.12 (GNU/Linux)<br>Comment: Using GnuPG with Icedove - <a href="http://www.enigmail.net/" target="_blank">http://www.enigmail.net/</a><br><br>iD8DBQFTDbL9UxlJ7aRr7hoRAqPTAKCfRArE1RzIG8O7WFIthz4waUcHRgCeLc04<br>D/JwT7gkuiZ6shtJ03dVBcw=<br>=/ReF<br>-----END PGP SIGNATURE-----<br>_______________________________________________<br>phenixbb mailing list<br><a ymailto="mailto:phenixbb@phenix-online.org" href="mailto:phenixbb@phenix-online.org">phenixbb@phenix-online.org</a><br><a href="http://phenix-online.org/mailman/listinfo/phenixbb"
target="_blank">http://phenix-online.org/mailman/listinfo/phenixbb</a><br><br><br></div> </div> </div> </div></body></html>