biology

PDBsum

PDBsum is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand PDBsum rather than just read about it. In short: PDBsum is a database that provides an overview of the contents of each 3D macromolecular structure deposited in the Protein Data Bank (PDB). Database The original version of the database was developed around 1995 by Roman Laskowski and collaborators at University College London.

Key takeaways

PDBsum belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect PDBsum to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of PDBsum from memory before moving on to harder problems.

Reference excerpt

PDBsum is a database that provides an overview of the contents of each 3D macromolecular structure deposited in the Protein Data Bank (PDB).

Database The original version of the database was developed around 1995 by Roman Laskowski and collaborators at University College London. As of 2014, PDBsum is maintained by Laskowski and collaborators in the laboratory of Janet Thornton at the European Bioinformatics Institute (EBI). Each structure in the PDBsum database includes an image of structure (main view, Bottom view and right view), molecular components contained in the complex(structure), enzyme reaction diagram if appropriate, Gene ontology functional assignments, a 1D sequence annotated by Pfam and InterPro domain assignments, description of bound molecules and graphic showing interactions between protein and secondary structure, schematic diagrams of protein–protein interactions, analysis of clefts contained within the structure and links to external databases. The RasMol and Jmol molecular graphics software are used to provide a 3D view of molecules and their interactions within PDBsum. Since the release of the 1000 Genomes Project in October 2012, all single amino acid variants identified by the project have been mapped to the corresponding protein sequences in the Protein Data Bank. These variants are also displayed within PDBsum, cross-referenced to the relevant UniProt identifier. PDBsum contains a number of protein structures that may be of interest in structure-based drug design. One branch of PDBsum, known as DrugPort, focuses on these models and is linked with the DrugBank drug target database.

See also Crystallographic database Protein structure database

References

External links Laskowski RA, Thornton JM. "PDBsum home page". European Bioinformatics Institute.

Worked examples

Example 1 — a first encounter with PDBsum

Start with the simplest possible case. Write down what PDBsum claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to PDBsum before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about PDBsum ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of PDBsum

In research: PDBsum appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses PDBsum in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: PDBsum is common in secondary-school and first-year university syllabi. It links to neighbouring topics Protein structure databases, Science and technology in Cambridgeshire, South Cambridgeshire District, so understanding it makes those chapters shorter.
In everyday life: Look for PDBsum outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study PDBsum in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what PDBsum means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain PDBsum out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is PDBsum in simple terms?

PDBsum is a database that provides an overview of the contents of each 3D macromolecular structure deposited in the Protein Data Bank (PDB). Database The original version of the database was developed around 1995 by Roman Laskowski and collaborators at University College London.

Why does PDBsum matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study PDBsum?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on PDBsum.