A Guide to Biological Databases - Interactive View
Technical Architecture Guide

Biological Database Ecosystem

An exhaustive analysis of bioinformatics infrastructure, from metadata standards to AI-driven structural predictions.

Part One

The Institutional Pillars

Comparison of the architectural philosophies of NCBI and EMBL-EBI.

NCBI (USA)

Literature-Centric

Entrez & "Neighboring"

Pre-computes similarity between records across 20+ databases, allowing seamless traversal from sequence to literature.

Visit NCBI

EMBL-EBI (Europe)

Service-Oriented

Job Dispatcher Framework

Middleware for piping database records directly into analytical tools like BLAST and Clustal Omega.

Visit EMBL-EBI
Part Two

Stratified Information Pipeline

The flow from raw archival data to processed structural models.

1

Raw Nucleotide Data

GenBank / ENA / SRA

2

Secondary Knowledge

UniProtKB (Swiss-Prot) / RefSeq

3

Integrated Genomes

Ensembl Browser

4

Protein Structure

PDB / AlphaFold DB

Part Three

The Metadata Hierarchy

How raw sequencing data is categorized for discovery.

SRA Data Model

1. BioProject
Study goals and funding.
2. BioSample
Physical source (tissue, strain).
3. Experiment
Library prep details.
4. Run
The actual SRR data file.

GEO Data Types

GPL
Platform e.g., Affymetrix Array
GSM
Sample Individual expression data.
GSE
Series Group of related samples.
Part Four

Technical Catalog

Industry-standard repositories with direct access links.

Archival

GenBank

Global archive for all publicly available DNA sequences. Syncs daily via INSDC.

Visit GenBank
Integrative

Ensembl

Genome browser for vertebrates with high-quality automated annotation.

Visit Ensembl
Knowledge

UniProtKB

Protein function hub. Swiss-Prot (Reviewed) is the curation gold standard.

Visit UniProt
Structural

PDB

Global archive for atomic coordinates from experimental 3D structures.

Visit PDB
AI-Driven

AlphaFold DB

AI-predicted models for 200M+ proteins. Covers the entire UniProt space.

Visit AlphaFold DB
Clinical

ClinVar

Database of relationships between variants and human health phenotypes.

Visit ClinVar
Part Five

Detailed Case Study

Tracing KCNQ1 Arg450Leu from Variant to Mechanism.

Conclusion: Scientific Synergy

By chaining metadata, sequence, and structure, a "Variant of Uncertain Significance" is upgraded to "Likely Pathogenic," informing critical clinical decisions.

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