General Molecule Tools

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pubchem.ncbi.nlm.nih.gov Molecule Database
What is pubchem.ncbi.nlm.nih.gov Molecule Database? pubchem.ncbi.nlm.nih.gov Molecule Database is the world's largest collection of small molecules with fewer than 1000 atoms and 1000 bonds. You can search pubchem.ncbi.nlm.nih.gov Molecule Database by: Chemical names Molecule formula SMILES and InCh... 2020-08-03, 228👍, 1💬

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PyMol Screen Layout
What information is displayed in each area on PyMol Screen? Once PyMol is started, you should see two windows displayed: External GUI - A Graphical User Interface window with the following areas: 1. Output message area - An area where output messages are displayed. Initially, the output area display... 2020-08-03, 149👍, 1💬

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Skeletal Formula Notations
What notations are used in molecule skeletal formula? There are a number of notations are used Skeletal Formula to simiplify molecule diagrams. 1. Carbon Element Symbols Removed - Since carbon elements are so common in molecules, carbon element symbols are removed from Skeletal Formula diagrams. Whe... 2020-08-03, 147👍, 1💬

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JSME Molecule Editor User Interface
Where to find FAQ (Frequently Asked Questions) on JSME Molecule Editor User Interface? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on JSME Molecule Editor User Interface. JSME User Interface Menu Icons Show InChi and InChi Key on JSME Build Mo... 2020-08-03, 146👍, 1💬

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What Is Isomer
What is Isomer? An Isomer is molecule that has the same the same chemical formula as another molecule, but with a different molecule structure than the other molecule. There are several types of isomers: 1. Constitutional Isomers - Isomers that differ in connectivity are called constitutional isomer... 2020-08-03, 163👍, 1💬

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Enantiomers Isomer Example
What are examples of Enantiomers Isomers? The picture below gives an example of Enantiomers Isomers: Stereoisomers > Enantiomers (Mirror Images) The molecule on the left is (R)-Lactic Acid with a chiral C in (R)-configuration, or right-hand configuration, or clockwise configuration. The molec... 2020-08-03, 154👍, 1💬

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What Is Radical Molecule
What is Radical Molecule? A Radical molecule, also called free radical, is molecule that has one or more radical centers. A Radical center is an atom in a molecule that has an unpaired valence electron, or odd number of valence electrons (including both bounded and unbound electrons). When writing t... 2020-08-03, 153👍, 1💬

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Constitutional Isomer Example
What are examples of Constitutional Isomers? The picture below gives an example of Constitutional Isomers: Constitutional or Structure Isomers The molecule on the left is N-Butane, also known as Normal Butane, which is a flammable, colorless, mostly nontoxic gas with a natural gas odor. The molecule... 2020-08-03, 168👍, 1💬

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Molecule FYI-1000155
Molecule Summary: ID: FYI-1000155 SMILES: CC Received at FYIcenter.com on: 2020-06-17 2020-08-03, 141👍, 1💬

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Scaling SVG Images using "viewBox" Attribute
What is the meaning of the <svg viewBox="..." ...> attribute? I want to understand how it is used to scale up the image. The <svg viewBox="..." ...> attribute defines view box properties which work together to scale and translate a SVG image. View Port Properties - Specif... 2020-08-03, 191👍, 1💬

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"babel ... -o svg -xX" - Hide Implicit H in SVG
How to hide those H symbols (Hydrogen symbols) implicitly added to non-carbon terminal atoms in SVG with the "babel" command? If you want to hide those Hydrogen symbols implicitly added to non-carbon terminal atoms in SVG format, you can use the "-o svg -xX" option with the "babel" command. Here is ... 2020-07-22, 193👍, 0💬

"babel ... -o svg" - Two "svg" Tag Levels
Why am getting two "svg" tag levels in SVG source code generated by the "babel" command? If you are using Open Babel 2.4.1 or higher, you will notice that there are two "svg" tag levels in SVG source code generated by the "babel" command. The main reason for using two "svg" tag levels for including ... 2020-07-22, 176👍, 0💬

"babel ... -o svg -xC" - Hide Terminal C in SVG
How to hide those C symbols for terminal carbon atoms in SVG with the "babel" command? If you want to hide those C symbols for terminal carbon atoms in SVG format, you can use the "-o svg -xC" option with the "babel" command. Here is how the "-xC" option is described in Open Babel help documebnt: "C... 2020-07-22, 176👍, 0💬

"babel ... -o svg -xP300" Bug - width="px" height="px"
Why "babel ... -o svg -xP300" command is not able scale a molecule SVG image? The "babel ... -o svg -xP300" command has a code bug that results incorrect attributes, width="px" height="px", in the top level "svg" element. in both Open 2.3 and 2.4 releases. However, "obabel ... -o svg -xP300" command... 2020-07-22, 175👍, 0💬

"obabel ... -o svg -xP300" - Scale SVG Image
How to scale and center a molecule SVG image in a given squar area? The default behavior of Open Babel 2.4 is different than 2.3 reguarding scalling and centering SVG images. With Open Babel 2.4, the molecule SVG image is defaulted in the center of 200x200 square. With Open Babel 2.3, the molecule S... 2020-07-22, 174👍, 0💬

"babel ... -o svg -xd -xP300" Bug - Option -d takes a parameter
Why "babel ... -o svg -xd -xP300" command is giving the "Option -d takes a parameter" error in Open Babel 2.4? It seems to be another code bug in the "babel" command in Open Babel 2.4 release. "-xd" option for "svg" output format should not require any parameters according the help document: "d - do... 2020-07-15, 175👍, 0💬

biotech.FYIcenter.com Links
Collections: Molecule FAQ SDF/Mol File FAQ Open Babel Tutorials PyMol Tutorials JSME Tutorials Interview Questions Tools and Resources Glossary of Terminologies Other Information Other Resources: Software QA Resources Developer Resources DBA Resources Windows Tutorials Java JAR Files DLL Files File ... 2020-07-15, 501👍, 0💬

"babel ... -o svg -xS" - Ball/Stick Depiction in SVG
How to generate a ball and stick depiction of a molecule in SVG with the "babel" command? If you want to a ball and stick depiction of a molecule in SVG format, you can use the "-o svg -xS" option with the "babel" command. For example, the following command generate a ball and stick depiction of of ... 2020-07-15, 187👍, 0💬

"babel -x..." Command - Extra Output Writing Options
How to pass extra options for "babel" to write output data of a specific format? If you want to pass extra options for "babel" to write output data of a specific format, you need to use one or more "-x..." options in the "babel" command line as shown in the following syntax: babel input_section outp... 2020-07-15, 168👍, 0💬

"babel -h" Command - Add Hydrogens to Molecule Data
How to add hydrogen atoms to molecule data during data conversion? Most molecules contains many hydrogen atoms. When molecules are written in many data formats, those hydrogen atoms are removed. We normally can read molecule structure without hydrogen atoms. But if you want to add those removed hydr... 2020-07-15, 163👍, 0💬

"babel -d" Command - Delete Hydrogens from Molecule Data
How to delete hydrogen atoms from molecule data during data conversion? If hydrogen atoms of a molecule are included in the input data source, you can use the "babel" generic option "-d" remove those hydrogen atoms during the molecule data conversion process. Here is an example of using the "-d" opt... 2020-07-15, 143👍, 0💬

List of File Formats Supported by Open Babel
How to get a list of File Formats Supported by Open Babel? You can use "babel -L formats" command to get a list of File Formats Supported by Open Babel: fyicenter$ babel -L formats abinit -- ABINIT Output Format [Read-only] acr -- ACR format [Read-only] adf -- ADF cartesian input format [Write-only]... 2020-07-15, 140👍, 0💬

"babel -a..." Command - Extra Input Reading Options
How to pass extra options for "babel" to read input data of a specific format? If you want to pass extra options for "babel" to read input data of a specific format, you need to use one or more "-a..." options in the "babel" command line as shown in the following syntax: babel input_section output_s... 2020-07-15, 139👍, 0💬

Rotamers Example
What are examples of Rotamers? The picture below gives an example of Rotamers: Stereoisomers > Diastereomers > Conformational > Rotamers   ⇒ Molecule Online Tools ⇐ Enantiomers Isomer Example ⇑ Introduction to Molecules ⇑⇑ Molecule FAQ 2020-07-07, 142👍, 0💬

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General Molecule Tools