Missing bond

[roger.y.tam@…]

The following bug report has been submitted:

Platform: macOS-10.14.5-x86_64-i386-64bit
ChimeraX Version: 1.3.dev202109020559 (2021-09-02 05:59:02 UTC)
Description
Hi, we are currently trying to model ligand/protein interactions using
glycan ligands with a protein. When we try to input a glycan structure, it
is displaying the molecule with a cleavage near where the branching is
occurring (please see attached ChimeraX screenshot and a cartoon
representation of the structure. Green line/arrow shows where cleavage is
occurring). We have tried several glycans and they all seem to be cleaving
at the similar spot.
We obtained the PDB file from the website ​https://dev.glycam.org/cb
and the input value of :
DGalpb1-4DGlcpNAcb1-2DManpa1-6[DManpa1-3]DManpb1-4DGlcpNAca1-OH

Any help you can provide is highly appreciated.
Thanks!
Roger

OpenGL version: 4.1 INTEL-12.9.22
OpenGL renderer: Intel Iris OpenGL Engine
OpenGL vendor: Intel Inc.Hardware:

Hardware Overview:

Model Name: MacBook Pro
Model Identifier: MacBookPro11,1
Processor Name: Intel Core i5
Processor Speed: 2.6 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 3 MB
Hyper-Threading Technology: Enabled
Memory: 8 GB
Boot ROM Version: 153.0.0.0.0
SMC Version (system): 2.16f68

Software:

System Software Overview:

System Version: macOS 10.14.5 (18F132)
Kernel Version: Darwin 18.6.0
Time since boot: 10 days 17:51

Graphics/Displays:

Intel Iris:

Chipset Model: Intel Iris
Type: GPU
Bus: Built-In
VRAM (Dynamic, Max): 1536 MB
Vendor: Intel
Device ID: 0x0a2e
Revision ID: 0x0009
Metal: Supported, feature set macOS GPUFamily1 v4
Displays:

Color LCD:

Display Type: Built-In Retina LCD
Resolution: 2560 x 1600 Retina
Framebuffer Depth: 24-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Automatically Adjust Brightness: No

Locale: (None, 'UTF-8')
PyQt5 5.15.2, Qt 5.15.2
Installed Packages:

alabaster: 0.7.12
appdirs: 1.4.4
appnope: 0.1.2
Babel: 2.9.1
backcall: 0.2.0
blockdiag: 2.0.1
certifi: 2021.5.30
cftime: 1.5.0
chardet: 4.0.0
charset-normalizer: 2.0.4
ChimeraX-AddCharge: 1.1.4
ChimeraX-AddH: 2.1.10
ChimeraX-AlignmentAlgorithms: 2.0
ChimeraX-AlignmentHdrs: 3.2
ChimeraX-AlignmentMatrices: 2.0
ChimeraX-Alignments: 2.2.2
ChimeraX-AlphaFold: 1.0
ChimeraX-AltlocExplorer: 1.0.1
ChimeraX-AmberInfo: 1.0
ChimeraX-Arrays: 1.0
ChimeraX-Atomic: 1.29
ChimeraX-AtomicLibrary: 4.1.4
ChimeraX-AtomSearch: 2.0
ChimeraX-AtomSearchLibrary: 1.0
ChimeraX-AxesPlanes: 2.0
ChimeraX-BasicActions: 1.1
ChimeraX-BILD: 1.0
ChimeraX-BlastProtein: 2.0
ChimeraX-BondRot: 2.0
ChimeraX-BugReporter: 1.0
ChimeraX-BuildStructure: 2.5.3
ChimeraX-Bumps: 1.0
ChimeraX-BundleBuilder: 1.1
ChimeraX-ButtonPanel: 1.0
ChimeraX-CageBuilder: 1.0
ChimeraX-CellPack: 1.0
ChimeraX-Centroids: 1.1
ChimeraX-ChemGroup: 2.0
ChimeraX-Clashes: 2.1
ChimeraX-ColorActions: 1.0
ChimeraX-ColorGlobe: 1.0
ChimeraX-ColorKey: 1.4.1
ChimeraX-CommandLine: 1.1.5
ChimeraX-ConnectStructure: 2.0
ChimeraX-Contacts: 1.0
ChimeraX-Core: 1.3.dev202109020559
ChimeraX-CoreFormats: 1.1
ChimeraX-coulombic: 1.3.1
ChimeraX-Crosslinks: 1.0
ChimeraX-Crystal: 1.0
ChimeraX-CrystalContacts: 1.0
ChimeraX-DataFormats: 1.2.1
ChimeraX-Dicom: 1.0
ChimeraX-DistMonitor: 1.1.4
ChimeraX-DistUI: 1.0
ChimeraX-Dssp: 2.0
ChimeraX-EMDB-SFF: 1.0
ChimeraX-ExperimentalCommands: 1.0
ChimeraX-FileHistory: 1.0
ChimeraX-FunctionKey: 1.0
ChimeraX-Geometry: 1.1
ChimeraX-gltf: 1.0
ChimeraX-Graphics: 1.1
ChimeraX-Hbonds: 2.1.1
ChimeraX-Help: 1.2
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
ChimeraX-Label: 1.1
ChimeraX-ListInfo: 1.1.1
ChimeraX-Log: 1.1.4
ChimeraX-LookingGlass: 1.1
ChimeraX-Maestro: 1.8.1
ChimeraX-Map: 1.1
ChimeraX-MapData: 2.0
ChimeraX-MapEraser: 1.0
ChimeraX-MapFilter: 2.0
ChimeraX-MapFit: 2.0
ChimeraX-MapSeries: 2.1
ChimeraX-Markers: 1.0
ChimeraX-Mask: 1.0
ChimeraX-MatchMaker: 2.0.1
ChimeraX-MDcrds: 2.5
ChimeraX-MedicalToolbar: 1.0.1
ChimeraX-Meeting: 1.0
ChimeraX-MLP: 1.1
ChimeraX-mmCIF: 2.4
ChimeraX-MMTF: 2.1
ChimeraX-Modeller: 1.1
ChimeraX-ModelPanel: 1.1
ChimeraX-ModelSeries: 1.0
ChimeraX-Mol2: 2.0
ChimeraX-Morph: 1.0
ChimeraX-MouseModes: 1.1
ChimeraX-Movie: 1.0
ChimeraX-Neuron: 1.0
ChimeraX-Nucleotides: 2.0.2
ChimeraX-OpenCommand: 1.7
ChimeraX-PDB: 2.6.1
ChimeraX-PDBBio: 1.0
ChimeraX-PDBLibrary: 1.0.1
ChimeraX-PDBMatrices: 1.0
ChimeraX-PickBlobs: 1.0
ChimeraX-Positions: 1.0
ChimeraX-PresetMgr: 1.0.1
ChimeraX-PubChem: 2.1
ChimeraX-ReadPbonds: 1.0
ChimeraX-Registration: 1.1
ChimeraX-RemoteControl: 1.0
ChimeraX-ResidueFit: 1.0
ChimeraX-RestServer: 1.1
ChimeraX-RNALayout: 1.0
ChimeraX-RotamerLibMgr: 2.0
ChimeraX-RotamerLibsDunbrack: 2.0
ChimeraX-RotamerLibsDynameomics: 2.0
ChimeraX-RotamerLibsRichardson: 2.0
ChimeraX-SaveCommand: 1.5
ChimeraX-SchemeMgr: 1.0
ChimeraX-SDF: 2.0
ChimeraX-Segger: 1.0
ChimeraX-Segment: 1.0
ChimeraX-SelInspector: 1.0
ChimeraX-SeqView: 2.4.2
ChimeraX-Shape: 1.0.1
ChimeraX-Shell: 1.0
ChimeraX-Shortcuts: 1.1
ChimeraX-ShowAttr: 1.0
ChimeraX-ShowSequences: 1.0
ChimeraX-SideView: 1.0
ChimeraX-Smiles: 2.1
ChimeraX-SmoothLines: 1.0
ChimeraX-SpaceNavigator: 1.0
ChimeraX-StdCommands: 1.6
ChimeraX-STL: 1.0
ChimeraX-Storm: 1.0
ChimeraX-Struts: 1.0
ChimeraX-Surface: 1.0
ChimeraX-SwapAA: 2.0
ChimeraX-SwapRes: 2.1
ChimeraX-TapeMeasure: 1.0
ChimeraX-Test: 1.0
ChimeraX-Toolbar: 1.1
ChimeraX-ToolshedUtils: 1.2
ChimeraX-Tug: 1.0
ChimeraX-UI: 1.12
ChimeraX-uniprot: 2.2
ChimeraX-UnitCell: 1.0
ChimeraX-ViewDockX: 1.0.1
ChimeraX-VIPERdb: 1.0
ChimeraX-Vive: 1.1
ChimeraX-VolumeMenu: 1.0
ChimeraX-VTK: 1.0
ChimeraX-WavefrontOBJ: 1.0
ChimeraX-WebCam: 1.0
ChimeraX-WebServices: 1.0
ChimeraX-Zone: 1.0
colorama: 0.4.4
cxservices: 1.0.1
cycler: 0.10.0
Cython: 0.29.23
decorator: 5.0.9
distlib: 0.3.1
docutils: 0.17.1
filelock: 3.0.12
funcparserlib: 0.3.6
grako: 3.16.5
h5py: 3.4.0
html2text: 2020.1.16
idna: 2.10
ihm: 0.20
imagecodecs: 2021.4.28
imagesize: 1.2.0
ipykernel: 5.5.5
ipython: 7.23.1
ipython-genutils: 0.2.0
jedi: 0.18.0
Jinja2: 2.11.3
jupyter-client: 6.1.12
jupyter-core: 4.7.1
kiwisolver: 1.3.2
lxml: 4.6.3
lz4: 3.1.3
MarkupSafe: 1.1.1
matplotlib: 3.4.2
matplotlib-inline: 0.1.2
msgpack: 1.0.2
netCDF4: 1.5.6
networkx: 2.6.2
numexpr: 2.7.3
numpy: 1.21.0
numpydoc: 1.1.0
openvr: 1.16.801
packaging: 21.0
ParmEd: 3.2.0
parso: 0.8.2
pexpect: 4.8.0
pickleshare: 0.7.5
Pillow: 8.2.0
pip: 21.1.1
pkginfo: 1.7.0
prompt-toolkit: 3.0.20
psutil: 5.8.0
ptyprocess: 0.7.0
pycollada: 0.7.1
pydicom: 2.1.2
Pygments: 2.9.0
PyOpenGL: 3.1.5
PyOpenGL-accelerate: 3.1.5
pyparsing: 2.4.7
PyQt5-commercial: 5.15.2
PyQt5-sip: 12.8.1
PyQtWebEngine-commercial: 5.15.2
python-dateutil: 2.8.1
pytz: 2021.1
pyzmq: 22.2.1
qtconsole: 5.1.0
QtPy: 1.10.0
RandomWords: 0.3.0
requests: 2.25.1
scipy: 1.6.3
setuptools: 57.0.0
sfftk-rw: 0.7.1
six: 1.16.0
snowballstemmer: 2.1.0
sortedcontainers: 2.4.0
Sphinx: 4.0.1
sphinxcontrib-applehelp: 1.0.2
sphinxcontrib-blockdiag: 2.0.0
sphinxcontrib-devhelp: 1.0.2
sphinxcontrib-htmlhelp: 2.0.0
sphinxcontrib-jsmath: 1.0.1
sphinxcontrib-qthelp: 1.0.3
sphinxcontrib-serializinghtml: 1.1.5
suds-jurko: 0.6
tifffile: 2021.4.8
tinyarray: 1.2.3
tornado: 6.1
traitlets: 5.1.0
urllib3: 1.26.6
wcwidth: 0.2.5
webcolors: 1.11.1
wheel: 0.36.2
wheel-filename: 1.3.0

File attachment: Glycan Cleave ChimeraX.jpg

[pett]

The ticket database got corrupted and I had to recreate the ticket.

[pett]

Hi Roger,
	In PDB files, inter-residue connectivity is only implied between consecutive residues not separated by a TER card.  The missing bond is between residues 3 and 5.  For such bonds, the PDB file needs to supply CONECT records.  I have attached a modified version of your file that has the necessary CONECT records and it opens in ChimeraX with the necessary bond.
	Another alternative is that once the structure is open in ChimeraX, use the "bond" command (e.g. "bond #1") to add the missing bond.

--Eric

	Eric Pettersen
	UCSF Computer Graphics Lab

edited.pdb​

untitled-part.html​

[pett]

Added by email2trac

[pett]

Added by email2trac