MemoryError opening mmCIF files

[marek.basler@…]

The following bug report has been submitted:
Platform:        Windows-10-10.0.19045
ChimeraX Version: 1.6.1 (2023-05-09 17:57:07 UTC)
Description
Trying to open .cif file with about 30.000 atoms.

Log:
Startup Messages  
---  
warning | Replacing fetcher for 'pdb_nmr' and format NMRSTAR from NMRSTAR
bundle with that from NMRSTAR bundle  
  
UCSF ChimeraX version: 1.6.1 (2023-05-09)  
© 2016-2023 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> open C:\Users\Marek\SWITCHdrive\T6SS\Structures\VgrG\2p5z.pdb format pdb

2p5z.pdb title:  
The E. Coli C3393 protein is A component of the type VI secretion system and
exhibits structural similarity to T4 bacteriophage tail proteins GP27 and GP5
[more info...]  
  
Chain information for 2p5z.pdb  
---  
Chain | Description  
1.1/X | No description available  
1.2/X 1.3/X | No description available  
  

> open
> C:/Users/Marek/SWITCHdrive/T6SS/Proposals/SNSF/2025/Data/fold_2024_06_21_09_34_vgrg_5_trimer_tagd/fold_2024_06_21_09_34_vgrg_5_trimer_tagd_model_0.cif

Traceback (most recent call last):  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\open_command\dialog.py", line 162, in _qt_safe  
run(session, "open " + " ".join([FileNameArg.unparse(p) for p in paths]) + (""  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\core\commands\run.py", line 38, in run  
results = command.run(text, log=log, return_json=return_json)  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\core\commands\cli.py", line 2897, in run  
result = ci.function(session, **kw_args)  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\open_command\cmd.py", line 119, in cmd_open  
models = Command(session, registry=registry).run(provider_cmd_text,
log=log)[0]  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\core\commands\cli.py", line 2897, in run  
result = ci.function(session, **kw_args)  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\open_command\cmd.py", line 194, in provider_open  
models, status = collated_open(session, None, [data], data_format,
_add_models,  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\open_command\cmd.py", line 464, in collated_open  
return remember_data_format()  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\open_command\cmd.py", line 435, in remember_data_format  
models, status = func(*func_args, **func_kw)  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\mmcif\\__init__.py", line 43, in open  
return mmcif.open_mmcif(session, data, file_name, **kw)  
File "src\mmcif.pyx", line 88, in chimerax.mmcif.mmcif.open_mmcif  
MemoryError: not enough memory  
  
MemoryError: not enough memory  
  
File "src\mmcif.pyx", line 88, in chimerax.mmcif.mmcif.open_mmcif  
  
See log for complete Python traceback.  
  




OpenGL version: 3.3.0 - Build 31.0.101.2130
OpenGL renderer: Intel(R) UHD Graphics 620
OpenGL vendor: Intel

Python: 3.9.11
Locale: en_US.cp1252
Qt version: PyQt6 6.4.2, Qt 6.4.2
Qt runtime version: 6.4.3
Qt platform: windows

Manufacturer: LENOVO
Model: 20LES03T00
OS: Microsoft Windows 10 Pro (Build 19045)
Memory: 17,023,094,784
MaxProcessMemory: 137,438,953,344
CPU: 8 Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
OSLanguage: en-US

Installed Packages:
    alabaster: 0.7.13
    appdirs: 1.4.4
    asttokens: 2.2.1
    Babel: 2.12.1
    backcall: 0.2.0
    beautifulsoup4: 4.11.2
    blockdiag: 3.0.0
    build: 0.10.0
    certifi: 2023.5.7
    cftime: 1.6.2
    charset-normalizer: 3.1.0
    ChimeraX-AddCharge: 1.5.9.1
    ChimeraX-AddH: 2.2.5
    ChimeraX-AlignmentAlgorithms: 2.0.1
    ChimeraX-AlignmentHdrs: 3.3.1
    ChimeraX-AlignmentMatrices: 2.1
    ChimeraX-Alignments: 2.9.3
    ChimeraX-AlphaFold: 1.0
    ChimeraX-AltlocExplorer: 1.0.3
    ChimeraX-AmberInfo: 1.0
    ChimeraX-Arrays: 1.1
    ChimeraX-Atomic: 1.43.10
    ChimeraX-AtomicLibrary: 10.0.6
    ChimeraX-AtomSearch: 2.0.1
    ChimeraX-AxesPlanes: 2.3.2
    ChimeraX-BasicActions: 1.1.2
    ChimeraX-BILD: 1.0
    ChimeraX-BlastProtein: 2.1.2
    ChimeraX-BondRot: 2.0.1
    ChimeraX-BugReporter: 1.0.1
    ChimeraX-BuildStructure: 2.8
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    ChimeraX-CheckWaters: 1.3.1
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    ChimeraX-Clashes: 2.2.4
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    ChimeraX-ColorGlobe: 1.0
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    ChimeraX-Dicom: 1.2
    ChimeraX-DistMonitor: 1.4
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    ChimeraX-Dssp: 2.0
    ChimeraX-EMDB-SFF: 1.0
    ChimeraX-ESMFold: 1.0
    ChimeraX-FileHistory: 1.0.1
    ChimeraX-FunctionKey: 1.0.1
    ChimeraX-Geometry: 1.3
    ChimeraX-gltf: 1.0
    ChimeraX-Graphics: 1.1.1
    ChimeraX-Hbonds: 2.4
    ChimeraX-Help: 1.2.1
    ChimeraX-HKCage: 1.3
    ChimeraX-IHM: 1.1
    ChimeraX-ImageFormats: 1.2
    ChimeraX-IMOD: 1.0
    ChimeraX-IO: 1.0.1
    ChimeraX-ItemsInspection: 1.0.1
    ChimeraX-Label: 1.1.7
    ChimeraX-ListInfo: 1.1.1
    ChimeraX-Log: 1.1.5
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    ChimeraX-MapData: 2.0
    ChimeraX-MapEraser: 1.0.1
    ChimeraX-MapFilter: 2.0.1
    ChimeraX-MapFit: 2.0
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    ChimeraX-MDcrds: 2.6
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    ChimeraX-Meeting: 1.0.1
    ChimeraX-MLP: 1.1.1
    ChimeraX-mmCIF: 2.12
    ChimeraX-MMTF: 2.2
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    ChimeraX-Mole: 1.0
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    ChimeraX-PubChem: 2.1
    ChimeraX-ReadPbonds: 1.0.1
    ChimeraX-Registration: 1.1.1
    ChimeraX-RemoteControl: 1.0
    ChimeraX-RenderByAttr: 1.1
    ChimeraX-RenumberResidues: 1.1
    ChimeraX-ResidueFit: 1.0.1
    ChimeraX-RestServer: 1.1
    ChimeraX-RNALayout: 1.0
    ChimeraX-RotamerLibMgr: 3.0
    ChimeraX-RotamerLibsDunbrack: 2.0
    ChimeraX-RotamerLibsDynameomics: 2.0
    ChimeraX-RotamerLibsRichardson: 2.0
    ChimeraX-SaveCommand: 1.5.1
    ChimeraX-SchemeMgr: 1.0
    ChimeraX-SDF: 2.0.1
    ChimeraX-Segger: 1.0
    ChimeraX-Segment: 1.0.1
    ChimeraX-SelInspector: 1.0
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    ChimeraX-Shell: 1.0.1
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    ChimeraX-ShowSequences: 1.0.1
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    widgetsnbextension: 4.0.7
    WMI: 1.5.1
    zipp: 3.15.0

[Eric Pettersen]

Hi Marek,

Thanks for reporting this problem. It has been fixed in later releases of ChimeraX, so if you get the latest production version it won't happen to you again.

--Eric

Eric Pettersen
UCSF Computer Graphics Lab