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Introduction to NCBI

From:
Geetika Jethra
Senior Research Fellow
Unit of Simulation and Informatics
Indian Agricultural Research Institute
NCBI

National Centre for Biotechnology Information
(http://www.ncbi.nlm.nih.gov/)
Established

as the government's response to the
need for more and better information processing
methods to deal with vast amount of data.
Developed by National Library of Medicine (NLM)
at the National Institutes of Health (NIH)
A comprehensive website for biologists including:
biology-related

databases,
tools for viewing and analyzing
automated systems for storing and retrieval
NCBI along with EBI and CIB together
form International Sequence Database
Collaboration which act as the chief
working unit and Information Centre. NCBI
has 3 collaborative databases:
GenBank
European Molecular Biology Laboratory
(EMBL) Database
DNA Database of Japan (DDBJ)
International Sequence Database Collaboration
Working
NCBI - Home Page
(http://www.ncbi.nlm.nih.gov/)
Overview

All Databases
Popular Resources
All Databases
and Tools
Click
"

A Science Primer" yields access to general

"

Databases and Tools" from the yields a

definitions and introductory information
regarding the branches of science
included in bioinformatics.
Many bioinformatics terms are defined in
this section in a clear-cut and basic
manner, making this Primer an excellent
first resource.

complete and well-ordered listing of
accessible information.
Entrez : A retrieval system
Capable of accessing integrated
information by searching many of the
NCBI databases with just one query
NOTE: instead of searching only one
database per query, then repeating
the same query to find information on
the same topic from another NCBI
database).
Entrez: Home Page
Entrez – Home Page
BLAST
Basic Local Alignment Search Tool
A predominant sequence alignment tool
for performing rapid searches of
nucleotide and protein sequence
databases
Detecting local, as well as
global, sequence alignments between
the query and database sequences.
Exercise 1: To search nucleotide sequence
data of Oryza sativa and download the data
into a separate text file in
(i) GenBank format
(ii) FASTA format.
Oryza Sativa

Click
Click

Click
Exercise 2: To View the Genome Map
of Oryza sativa with chromosome
number.
Exercise 3:Download the sequence
data i.e. contigs from the ftp site of
NCBI.
Step 1: Open NCBI Home page -> FTP site -> Genome
assembly/Annotation Projects
Step 2: Click Plants

Step 3: Click Triticum aestivum
Step 4: Click on the link -> Save

NOTE: The file in the form of Zip format will be saved in the desired
location or in the default folder i.e. C: Downloads
Exercise 4: To view the graphics file of
Chain A, Solution Structure of Plant
Nsltp2 Purified from Rice (Oryza Sativa)
and the structure of Starch Branching
Enzyme I (Bei) From Oryza Sativa L.
Step 1: NCBI Home Page -> Proteins -> click on the first link
Step 2: 1st Result
Step 3: Go to home page of Entrez -> click on the 2nd link

1

2

3

4

5

1

Click to download the PDB file and view the structure using Cn3D software.

2

To view the PubMed i.e. to open the research articles and abstracts.

3

To view the protein files associated with Starch Branching Enzyme I (Bei) from Oryza Sativa L.

4

To view the conserved domain associated with the link.

5

To view the chemical structure of the protein along with the molecular weight and chemical formula for t
the same.
Step 4: Result by MMDB
Introduction to NCBI

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Introduction to NCBI

  • 1. Introduction to NCBI From: Geetika Jethra Senior Research Fellow Unit of Simulation and Informatics Indian Agricultural Research Institute
  • 2. NCBI National Centre for Biotechnology Information (http://www.ncbi.nlm.nih.gov/) Established as the government's response to the need for more and better information processing methods to deal with vast amount of data. Developed by National Library of Medicine (NLM) at the National Institutes of Health (NIH) A comprehensive website for biologists including: biology-related databases, tools for viewing and analyzing automated systems for storing and retrieval
  • 3. NCBI along with EBI and CIB together form International Sequence Database Collaboration which act as the chief working unit and Information Centre. NCBI has 3 collaborative databases: GenBank European Molecular Biology Laboratory (EMBL) Database DNA Database of Japan (DDBJ)
  • 4. International Sequence Database Collaboration Working
  • 5. NCBI - Home Page (http://www.ncbi.nlm.nih.gov/)
  • 8. " A Science Primer" yields access to general " Databases and Tools" from the yields a definitions and introductory information regarding the branches of science included in bioinformatics. Many bioinformatics terms are defined in this section in a clear-cut and basic manner, making this Primer an excellent first resource. complete and well-ordered listing of accessible information.
  • 9. Entrez : A retrieval system Capable of accessing integrated information by searching many of the NCBI databases with just one query NOTE: instead of searching only one database per query, then repeating the same query to find information on the same topic from another NCBI database).
  • 12. BLAST Basic Local Alignment Search Tool A predominant sequence alignment tool for performing rapid searches of nucleotide and protein sequence databases Detecting local, as well as global, sequence alignments between the query and database sequences.
  • 13.
  • 14.
  • 15. Exercise 1: To search nucleotide sequence data of Oryza sativa and download the data into a separate text file in (i) GenBank format (ii) FASTA format.
  • 17.
  • 19. Exercise 2: To View the Genome Map of Oryza sativa with chromosome number.
  • 20.
  • 21.
  • 22. Exercise 3:Download the sequence data i.e. contigs from the ftp site of NCBI.
  • 23. Step 1: Open NCBI Home page -> FTP site -> Genome assembly/Annotation Projects
  • 24. Step 2: Click Plants Step 3: Click Triticum aestivum
  • 25. Step 4: Click on the link -> Save NOTE: The file in the form of Zip format will be saved in the desired location or in the default folder i.e. C: Downloads
  • 26. Exercise 4: To view the graphics file of Chain A, Solution Structure of Plant Nsltp2 Purified from Rice (Oryza Sativa) and the structure of Starch Branching Enzyme I (Bei) From Oryza Sativa L.
  • 27. Step 1: NCBI Home Page -> Proteins -> click on the first link
  • 28. Step 2: 1st Result
  • 29. Step 3: Go to home page of Entrez -> click on the 2nd link 1 2 3 4 5 1 Click to download the PDB file and view the structure using Cn3D software. 2 To view the PubMed i.e. to open the research articles and abstracts. 3 To view the protein files associated with Starch Branching Enzyme I (Bei) from Oryza Sativa L. 4 To view the conserved domain associated with the link. 5 To view the chemical structure of the protein along with the molecular weight and chemical formula for t the same.
  • 30. Step 4: Result by MMDB