Chemical Informatics

Chemical Informatics Cheminformatics Bioinformatics Infrastructure Facility North-East Institute of Science & Technology

Salam Pradeep

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What is Chemical Informatics 

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Chemoinformatics or chemical informatics is the use of computer and informational techniques, applied to a range of problems in the field of chemistry. It is the mixing of those information resources to transform data into information and information into knowledge for the intended purpose of making better decisions faster in the area of drug lead identification and optimization. In silico techniques are used in pharmaceutical companies in the process of drug discovery. These methods can also be used in chemical & allied industries in various other forms. http://biotech-job.blogspot.com/

What is Computational Chemistry A

branch of chemistry that uses computers to assist in solving chemical problems.  Uses the results of theoretical chemistry, incorporated into computer programs, to calculate the structures and properties of molecules & solids.  Its results normally complement the information obtained by chemical experiments & in some cases predict unobserved chemical phenomena.  Widely used in the design of new drugs and materials. http://biotech-job.blogspot.com/

Chemical & Ligand Databases  Beilstein

Database (Commercial)  NCBI – PubChem  ChemBank  DrugBank  ChemSpider  LOLI database  RX List  HIC Up – Hetero Compound Info Center http://biotech-job.blogspot.com/

Chemical Similarity Search  ChemBank

(Web based)  ACD (Advanced Chemistry Development) Free Software  Molsoft (Web based)

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Chem Bank 

It is a public, web-based informatics environment created by the Broad Institute's Chemical Biology Program & funded in large part by the National Cancer Institute's Initiative for Chemical Genetics (ICG).

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ACD Chemsketch Structure Search

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Molsoft Chemical Search Molsoft is a La Jolla, California based company that is a primary source of new breakthrough technologies in modeling, docking, computational chemistry and biology. Online Tools: 1. PDB Viewer 2. 2D to 3D Converter 3. Chemical Search Drug Likeness 4. ODA – Optimal Docking Areas

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Drug Bank

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Chemical File Formats File Ext

Format Name

alc

Alchemy Format

cdx

ChemDraw, Cambridge Soft

cer

Accelrys MSI Cerius II

c3d

Chem3D, Cambridge Soft

cif

Crystallographic Information File, CCDC

mol

MDL Molfile

smiles, smi

Simplified molecular input line entry specification Structure-Data File

sdf

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Chem Office A

molecule editor developed by the cheminformatics company CambridgeSoft.  ChemOffice comprises ChemDraw, Chem3D and ChemFinder.  Available for Apple Macintosh and Microsoft Windows.  Designed for Chemist and Biologists

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Chem Draw  Chemical

structure to name conversion  Chemical name to structure conversion  NMR spectrum simulation  Mass spectrum simulation  Structure cleanup  Extensive collection of templates  Anti-aliased graphics

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Powerful Features  Convert

Name to Structure

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Calculate Properties

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1H NMR Prediction

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Chem Finder  ChemFinder®

is a database management system for working with chemical information.  It provides a place to store chemical structures, physical properties, notes, tables of data, and charts based on that data.  With ChemFinder, we can search through data efficiently and quickly, and we can organize the data instantly.

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Compound Library

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PASS (Demo 51 Activities)  PASS

Professional (Prediction of Activity Spectra for Substances) predicts the biological activity spectra for substances on the basis of their structural formulae, includes SAR Base (Structure-Activity Relationships data and knowledge Base) and provides its creating, updating and training.  Predicts 51 Biological Activities

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Pharmacological Effects 

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Antihypertensive: Substance used for hypertonia treatment. Substance reduces the increased arterial blood pressure. Vasodilator: Substance that causes relaxation of blood vessels. Diuretic: Substance that promotes the excretion of urine by direct action on kidney function. Uric acid excretion stimulant: Substance that increases the urinary excretion of uric acid, thereby reducing the concentration of uric acid in the blood. Angiotensin AT2 receptor antagonist: Substance that binds to the angiotensin AT2 receptor and prevents its stimulation. Saluretic: Substance that promotes excretion of sodium and chloride ions in thehttp://biotech-job.blogspot.com/ urine.

Molecular Mechanisms Calcium channel antagonist

Renin inhibitor

Neuropeptide Y antagonist

Dopamine D1 agonist

Phosphodiesterase I inhibitor

Vasopressin 2 antagonist

Dopamine D2 agonist

Vasopressin 1 antagonist

Endothelin receptor antagonist

Nitric oxide agonist

Adenosine receptor agonist

Metalloproteinase inhibitor

Endothelin A receptor antagonis

Potassium channel activator

Nitric oxide donor

Adrenaline antagonist

Beta adrenoreceptor antagonist

Calcium antagonist

Carbonic anhydrase inhibitor

Angiotensin antagonist

Beta 1 adrenoreceptor antagonist

Kinesin antagonist

Guanylate cyclase stimulant

Dopamine agonist

Angiotensin II receptor antagonist

5 Hydroxytryptamine 2 antagonist

Neutral endopeptidase inhibitor

Antidiuretic hormone antagonist

Adenosine A2 receptor agonist

Endothelin B receptor antagonist

Adenosine A1 receptor antagonist

Phosphodiesterase IV inhibitor

5 Hydroxytryptamine 1A agonist

Alpha 2 adrenoreceptor antagonist

Angiotensin AT1 receptor antagonist

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Side Effects and Toxicity  Carcinogenic:

Substance that produces cancer.  Embryotoxic: Substance damaging to the embryo, which may result in death or in abnormal development.  Teratogen: Substance that causes the production of physical defects in the developing embryo.

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ADME / TOX Box

Abraham Solvent

H-Bonding acidity parameter H-Bonding basicity parameter Partition Coefficient between gaseous phase and hexadecane Polarity / polarizability parameter Excessive molar refraction Mcgowan volume

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Chem 3D  Chem3D

enables to create color models of chemical and biochemical compounds.  Once we sketch a model, we can calculate a variety of molecular properties - electrostatic potentials, bond energies, and spectrum prediction.  It combines powerful building, analysis, and computational tools with intuitive menus and a powerful scripting interface. http://biotech-job.blogspot.com/

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Force Field Calculations  MM2:

Most commonly used for calculating properties of organic molecular models. - Correlates the potential energy surface to the conformations of our model  MMFF94: Used to perform energy minimization calculations on proteins & biological structure.

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MM2 & MMFF94  Energy

Minimization: The atoms location for a build model is not accurate compared to the actual one. Hence EM  Molecular Dynamics: Uses Newtonian mechanics to simulate motion of atoms, adding or subtracting kinetic energy as the model’s temperature increases or decreases. 

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GAMESS The General Atomic and Molecular Electronic Structure System (GAMESS)  A general ab initio quantum chemistry package maintained by the Gordon research group at Iowa State University.  Minimize Energy  Optimize to Transition State  Compute Properties  Run Frequency  Predict IR/Raman Spectra  Predict NMR Spectra 

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Lipinski Rule of Five 

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Lipinski's Rule of Five states that, in general, an orally active drug has no more than one violation of the following criteria: Not more than 5 hydrogen bond donors (nitrogen or oxygen atoms with one or more hydrogen atoms) Not more than 10 hydrogen bond acceptors (nitrogen or oxygen atoms) A molecular weight under 500 g/mol A partition coefficient log P less than 5 Note that all numbers are multiples of five, which is the origin of the rule's name. http://biotech-job.blogspot.com/

Thank You Visit http://biotech-job.blogspot.com/ for Job Openings in Bioinformatics

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