- phenixbb - phenix-online.org

Different stats with different number of macrocycles
by Patrick Loll 05 May '17

05 May '17

Hi, I have an odd observation. I am finishing a refinement at 2.5 Å, using the Phenix GUI. I performed a three-macrocycle refinement, and saw that the geometry (RMS bonds/angles) and R/Rfree all got better in the first macrocycle, and then worsened in the subsequent two macrocycles. OK, fine. So I repeated the refinement, except I performed only a single macrocycle (starting from the exact same input coordinates). However, the statistics after this one-macrocycle job did not match the stats seen after 1 macrocycle in the 3-macrocycle job (?!). This doesn’t make sense to me; if you’re starting from the exact same coordinates, shouldn’t the first macrocycle always wind up at the same place, regardless of whether or not the program goes on to do additional macrocycles of refinement? In case this isn’t clear: In the 3-macrocycle job, after the first macrocycle, RMS bonds/angles = 0.005 Å/0.9 deg, R/Rfree = 0.208/0.236 (by the end of the third macrocycle, these numbers have changed to 0.009 Å/1.41 deg and 0.212/0.244) At the end of the 1-macrocycle job, RMS bonds/angles = 0.008 Å/1.4 deg, R/Rfree = 0.209/0.240 This is Phenix version 1.11.1-2575-000. Any insights welcome. Cheers, Pat --------------------------------------------------------------------------------------- Patrick J. Loll, Ph. D. Professor of Biochemistry & Molecular Biology Drexel University College of Medicine Room 10-102 New College Building 245 N. 15th St., Mailstop 497 Philadelphia, PA 19102-1192 USA (215) 762-7706 pat.loll(a)drexelmed.edu

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Phenix Generate Table 1 Tool for twin-refinement statistics
by Xiao Lei 04 May '17

04 May '17

Dear All, I am using Windows Phenix Version 1.11.1. I'd like to generate table 1 for journal using Phenix "Generate Table 1 tool". In the input column, I input pdb model, data mtz, and data unmerged mtz, it gives me output statistics without twin refinement. But I'd like to show the results of twin refinement because I used Refmac5 to do twin refinement. Even I put the pdb from the output after twin refinement, the tool still gives me without twin refinement statistics. Thanks ahead for any input.

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TLS refinement
by Reza Khayat 02 May '17

02 May '17

Hi, I'm having difficulty with performing TLS refinement on a highly symmetric system. The difference between the R_work and R_free increases with TLS refinement (16.5/21.4 changes to 14.4/22.2). The TLS tensors for some of the group are not sensible (if I understand the literature correctly) -there are some negative numbers for the T and L tensors (see below). The TLS groups were identified with phenix.find_tls_groups. Any suggestions would be appreciated. REMARK 3 SELECTION: chain 'A' and (resid 38 through 68 ) REMARK 3 ORIGIN FOR THE GROUP (A): 56.6459 -23.5648 -59.0695 REMARK 3 T TENSOR REMARK 3 T11: 0.2105 T22: 0.2895 REMARK 3 T33: 0.0962 T12: 0.0829 REMARK 3 T13: 0.0473 T23: 0.0007 REMARK 3 L TENSOR REMARK 3 L11: 0.0446 L22: 0.0120 REMARK 3 L33: 0.0096 L12: 0.0246 REMARK 3 L13: 0.0209 L23: 0.0106 REMARK 3 S TENSOR REMARK 3 S11: 0.0228 S12: -0.0268 S13: -0.0023 REMARK 3 S21: -0.0507 S22: 0.0526 S23: -0.0287 REMARK 3 S31: -0.0296 S32: -0.0137 S33: 0.0534? The data set is complete at 2.3Å resolution and there are no strange crystal phenotypes. Best wishes, Reza Reza Khayat, PhD Assistant Professor City College of New York Department of Chemistry New York, NY 10031

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starting model using phenix.map_to_model
by Chang Sun 02 May '17

02 May '17

Hi there, I am currently using the phenix.map_to_model for model building from a cryo EM electron density map. One thing I am wondering is whether the starting model should be aligned with the original map or the shifted map produced in the process? Because in my case, most of the starting model is not retained in the final "map_to_model.pdb". BTW, Dr Terwilliger, thanks for devoloping this wonderful tool! Thanks, Chang Postdoctoral Research Associate , Gennis Lab Department of Biochemistry, University of Illinois A306 CLSL 600 S. Goodwin Ave Urbana, IL 61801 Phone: 217-333-4939

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FSC curve between experimental cryo EM map and model
by #AHMED TOFAYEL# 29 Apr '17

29 Apr '17

Dear all, If I want to calculate FSC curve between experimental cryo EM map and model, what is the correct procedure to do so? I will explain what I have tried so far. Although I have variable local resolution in my map, according to FSC=0.143 criterion I have a 4 Ang map (say 1.mrc), I have used 'molmap' command in Chimera to generate a simulated map at 4 Ang. Then I used "vop resample" to take care of the pixel and box values ( then saved as 2.mrc). Thereafter, I have used "e2proc3d.py 1.mrc fsc.txt --calcfsc=2.mrc and plotted the fsc.txt file to get the curve. I am not sure if I am on the right track. My pixel size is 1.28. Best regards, Tofayel

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radiation damage-induced phasing (RIP) tutorial
by Murpholino Peligro 28 Apr '17

28 Apr '17

Hi lads... Do you know if there is a good tutorial for doing RIP somewhere on the internet? What programs can do RIP? -SHELX -AutoRickShaw -? Thanks

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Can I use PHENIX "Find NCS" tool to verify space group ?
by Alex Lee 23 Apr '17

23 Apr '17

Hi All, I have a protein/dna dataset (3A resolution) with space group (SG) ambiguity, it could be P32 with two copies of molecules (one copy of molecule composed of protein homodimer with asymmetric dsDNA) in asymmetric unit (ASU) or P3221 with one copy of molecule in ASU. Both SG can give me MR solutions and after Refmac P32 Rfree is around 31% while P3221 Rfree is around 34% (without any twin refine at this stage). Density maps from both SG makes sense and they are similar by eye inspection. Because of partial twinning of the dataset (estimation twin fraction alpha around 0.22) , which confuse programs of assigning the correct SG. Pointless and Xtriage suggests P6222, which we are sure it's not correct (based on performance on both MR, Refmac and biology sense that dsDNA is asymmetric, and if P6222 is true then based on Mathew coef. there will be a monomer protein with single strand ssDNA in ASU). Zanuda suggests SG P32 in both cases (input experimental data P32 or P3221 along with refined model). However, Zanuda may not work well in twin case. In short, the problem now is to choose one SG from P32 or P3221. There is one suggestion that try SG P32, as there are two copies of molecules in ASU in P32 group, try find the NCS operator in P32 and check if this operator is close to crystallographic symmetry operator or not, if it is, then SG is P3221, if it's not, then SG is P32. I did a few rounds of search in Internet, I found Phenix "Find NCS tool" and input PDB of my refined structures from both P32 and P3221. For both test, Find NCS tool did find NCS operator but in the end of the log file I see the same results as below: This NCS object does not contain point group symmetry This NCS object does not contain helical symmetry. I am asking: 1. does "This NCS object does not contain point group symmetry" from Find NCS tool mean that NCS operator in my PDB is not crystallographic symmetry operator? 2. Is there a tool in Phenix which can find the NCS operator and check if the NCS operator is close to crystallographic symmetry operator or not? Thanks ahead.

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Marching tomorrow?
by lbetts0508 . 22 Apr '17

22 Apr '17

Dear all, I am marching in DC tomorrow for continued support of our wonderful National Laboratories and funding that made resources like PHENIX possible. What a treasure these have been. Thank you for your support of structural biologists all these years and I hope for your continued success! Laurie Betts Chapel Hilll,NC

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Cannot compile rosetta interface Centos 7 with 1.11.1
by ludovic Pecqueur 21 Apr '17

21 Apr '17

Dear Phenix developers, I installed the latest phenix version today (1.11.1-2575) on Centos 7.2 I have rosetta_2016.13.58602 When I try to compile the rosetta interface (after exporting PHENIX_ROSETTA_PATH), compilation fails (see end of message for errors). When I compile the rosetta interface using phenix 1.11-2567, compilation goes to completion without errors. If you have any idea of the change between the two versions leading to this issue. Thank you for your help, Ludovic. ######################## Error message: Substituting phenix.python into build shell scripts update_options.sh update_ResidueType_enum_files.sh /usr/local/PROGRAMS/ROSETTA/PHENIX_Rosetta_refine/rosetta_src_2016.13.58602_bundle/main/source ~> phenix.python scons.py bin mode=release extras=python -j 8 scons: Reading SConscript files ... Running versioning script ... fatal: Not a git repository (or any parent up to mount point /usr/local) Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set). Done. (0.0 seconds) file ./options.dox being updated file ./full-options-list.md being updated Number of option files updated: 2 Total 3657 options. Finished updating ResidueProperty code -- no changes needed Finished updating VariantType code -- no changes needed scons: done reading SConscript files. scons: Building targets ... g++ -o build/src/release/linux/3.10/64/x86/gcc/4.8/python/protocols/hybridization/CartesianSampler.os -c -std=c++98 -ffor-scope -isystem external/boost_1_55_0/ -isystem external/ -isystem external/include/ -isystem external/dbio/ -pipe -Wall -Wextra -pedantic -Wno-long-long -Wno-strict-aliasing -march=core2 -mtune=generic -O3 -ffast-math -funroll-loops -finline-functions -finline-limit=20000 -s -Wno-unused-variable -Wno-unused-parameter -fPIC -DBOOST_ERROR_CODE_HEADER_ONLY -DBOOST_SYSTEM_NO_DEPRECATED -DBOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS -DPTR_BOOST -DNDEBUG -DWITH_PYTHON=1 -Isrc -Iexternal/include -Isrc/platform/linux/64/gcc/4.8 -Isrc/platform/linux/64/gcc -Isrc/platform/linux/64 -Isrc/platform/linux -Iexternal/boost_1_55_0 -Iexternal -Iexternal/dbio -I/usr/include -I/usr/local/include -Iexternal/include/python2.7 src/protocols/hybridization/CartesianSampler.cc In file included from src/protocols/hybridization/CartesianSampler.cc:17:0: src/core/scoring/cryst/PhenixInterface.hh:18:20: fatal error: Python.h: No such file or directory #include "Python.h" ^ compilation terminated. g++ -o build/src/release/linux/3.10/64/x86/gcc/4.8/python/protocols/cryst/cryst_movers.os -c -std=c++98 -ffor-scope -isystem external/boost_1_55_0/ -isystem external/ -isystem external/include/ -isystem external/dbio/ -pipe -Wall -Wextra -pedantic -Wno-long-long -Wno-strict-aliasing -march=core2 -mtune=generic -O3 -ffast-math -funroll-loops -finline-functions -finline-limit=20000 -s -Wno-unused-variable -Wno-unused-parameter -fPIC -DBOOST_ERROR_CODE_HEADER_ONLY -DBOOST_SYSTEM_NO_DEPRECATED -DBOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS -DPTR_BOOST -DNDEBUG -DWITH_PYTHON=1 -Isrc -Iexternal/include -Isrc/platform/linux/64/gcc/4.8 -Isrc/platform/linux/64/gcc -Isrc/platform/linux/64 -Isrc/platform/linux -Iexternal/boost_1_55_0 -Iexternal -Iexternal/dbio -I/usr/include -I/usr/local/include -Iexternal/include/python2.7 src/protocols/cryst/cryst_movers.cc In file included from src/protocols/cryst/cryst_movers.cc:16:0: src/core/scoring/cryst/PhenixInterface.hh:18:20: fatal error: Python.h: No such file or directory #include "Python.h" ^ compilation terminated. gcc -o build/external/release/linux/3.10/64/x86/gcc/4.8/python/libsqlite3.so -shared build/external/release/linux/3.10/64/x86/gcc/4.8/python/dbio/sqlite3/sqlite3.os -L/usr/lib -L/usr/local/lib -Lexternal/lib -lpython2.7 -ldl -lpthread -lutil g++ -o build/external/release/linux/3.10/64/x86/gcc/4.8/python/libcifparse.so -Wl,-rpath=/usr/local/PROGRAMS/ROSETTA/PHENIX_Rosetta_refine/rosetta_src_2016.13.58602_bundle/main/source/build/external/release/linux/3.10/64/x86/gcc/4.8/python -Wl,-rpath=\$ORIGIN -Wl,-rpath=\$ORIGIN/../lib -shared build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/BlockIO.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/CifDataInfo.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/CifExcept.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/CifFile.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/CifFileReadDef.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/CifParentChild.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/CifParserBase.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/CifScannerBase.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/CifString.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/DataInfo.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/DicFile.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/DICParserBase.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/DICScannerBase.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/Exceptions.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/GenCont.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/GenString.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/ISTable.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/ITTable.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/mapped_ptr_vector.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/mapped_vector.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/ParentChild.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/RcsbFile.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/RcsbPlatform.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/Serializer.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/TableFile.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/TTable.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/CifParser.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/CifScanner.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/DICParser.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/DICScanner.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/regcomp.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/regerror.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/regexec.os build/external/release/linux/3.10/64/x86/gcc/4.8/python/cifparse/regfree.os -Lexternal/lib -Lbuild/external/release/linux/3.10/64/x86/gcc/4.8/python -Lexternal -L/usr/lib -L/usr/local/lib -lpython2.7 -ldl -lpthread -lutil g++ -o build/src/release/linux/3.10/64/x86/gcc/4.8/python/core/scoring/cryst/PhenixInterface.os -c -std=c++98 -ffor-scope -isystem external/boost_1_55_0/ -isystem external/ -isystem external/include/ -isystem external/dbio/ -pipe -Wall -Wextra -pedantic -Wno-long-long -Wno-strict-aliasing -march=core2 -mtune=generic -O3 -ffast-math -funroll-loops -finline-functions -finline-limit=20000 -s -Wno-unused-variable -Wno-unused-parameter -fPIC -DBOOST_ERROR_CODE_HEADER_ONLY -DBOOST_SYSTEM_NO_DEPRECATED -DBOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS -DPTR_BOOST -DNDEBUG -DWITH_PYTHON=1 -Isrc -Iexternal/include -Isrc/platform/linux/64/gcc/4.8 -Isrc/platform/linux/64/gcc -Isrc/platform/linux/64 -Isrc/platform/linux -Iexternal/boost_1_55_0 -Iexternal -Iexternal/dbio -I/usr/include -I/usr/local/include -Iexternal/include/python2.7 src/core/scoring/cryst/PhenixInterface.cc In file included from src/core/scoring/cryst/PhenixInterface.cc:15:0: src/core/scoring/cryst/PhenixInterface.hh:18:20: fatal error: Python.h: No such file or directory #include "Python.h" ^ compilation terminated. g++ -o build/src/release/linux/3.10/64/x86/gcc/4.8/python/core/scoring/cryst/XtalMLEnergy.os -c -std=c++98 -ffor-scope -isystem external/boost_1_55_0/ -isystem external/ -isystem external/include/ -isystem external/dbio/ -pipe -Wall -Wextra -pedantic -Wno-long-long -Wno-strict-aliasing -march=core2 -mtune=generic -O3 -ffast-math -funroll-loops -finline-functions -finline-limit=20000 -s -Wno-unused-variable -Wno-unused-parameter -fPIC -DBOOST_ERROR_CODE_HEADER_ONLY -DBOOST_SYSTEM_NO_DEPRECATED -DBOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS -DPTR_BOOST -DNDEBUG -DWITH_PYTHON=1 -Isrc -Iexternal/include -Isrc/platform/linux/64/gcc/4.8 -Isrc/platform/linux/64/gcc -Isrc/platform/linux/64 -Isrc/platform/linux -Iexternal/boost_1_55_0 -Iexternal -Iexternal/dbio -I/usr/include -I/usr/local/include -Iexternal/include/python2.7 src/core/scoring/cryst/XtalMLEnergy.cc In file included from src/core/scoring/cryst/XtalMLEnergy.cc:16:0: src/core/scoring/cryst/PhenixInterface.hh:18:20: fatal error: Python.h: No such file or directory #include "Python.h" ^ compilation terminated. scons: *** [build/src/release/linux/3.10/64/x86/gcc/4.8/python/protocols/hybridization/CartesianSampler.os] Error 1 scons: *** [build/src/release/linux/3.10/64/x86/gcc/4.8/python/protocols/cryst/cryst_movers.os] Error 1 scons: *** [build/src/release/linux/3.10/64/x86/gcc/4.8/python/core/scoring/cryst/PhenixInterface.os] Error 1 scons: *** [build/src/release/linux/3.10/64/x86/gcc/4.8/python/core/scoring/cryst/XtalMLEnergy.os] Error 1 scons: building terminated because of errors.

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Generate a map showing local agreement between map and model
by #AHMED TOFAYEL# 18 Apr '17

18 Apr '17

Dear developers and users, Is it possible to generate a map to show local agreement between cryo-EM map and the model generated using the same map? If I am not wrong, the supplementary figure S5 had accomplished the job (using Chimera), but I don't understand how to generate a similar figure for my project. Is it possible to do with phenix? http://emboj.embopress.org/content/28/6/755 Best regards, Tofayel NTU Singapore

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