biology

PDBREPORT

PDBREPORT 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 PDBREPORT rather than just read about it. In short: The PDBREPORT database is a database of anomalies and errors found in structures of biological molecules in the Protein Data Bank. The PDBREPORTS database is a useful facility for judging the quality of protein structures in in silico protein structure bioinformatics projects, and has been used frequently by participants of the CASP homology modelling 'competition'.

Key takeaways

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

Reference excerpt

The PDBREPORT database is a database of anomalies and errors found in structures of biological molecules in the Protein Data Bank. The PDBREPORTS database is a useful facility for judging the quality of protein structures in in silico protein structure bioinformatics projects, and has been used frequently by participants of the CASP homology modelling 'competition'. PDBREPORTs are made using the WHAT_CHECK software. WHAT_CHECK is the option of the WHAT IF software that validates macromolecules (especially proteins). Many of the WHAT_CHECK options determine normality values; that is, the number of standard deviations that any given observation deviates from its mean. And in most cases such events are listed if the deviation is more than 4 sigma, which implies that one in ten thousand of the listed anomalies is genuine and not an error. The section 'validation' of the WHAT_CHECK pages explains this with more detail.

Issues PDBREPORT entries may be seen as error reports for macromolecular structures deposited in the PDB. The term error report should be used with caution as the WHAT_CHECK software that produces the PDBREPORT flags every anomaly of four standard deviations or more as an error. Some of these reported anomalies may be genuine deviations from the mean rather than errors.

References

Worked examples

Example 1 — a first encounter with PDBREPORT

Start with the simplest possible case. Write down what PDBREPORT 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 PDBREPORT 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 PDBREPORT 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 PDBREPORT

In research: PDBREPORT 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 PDBREPORT 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: PDBREPORT is common in secondary-school and first-year university syllabi. It links to neighbouring topics Protein databases, Protein structure, Structural bioinformatics, so understanding it makes those chapters shorter.
In everyday life: Look for PDBREPORT 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.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study PDBREPORT in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what PDBREPORT 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 PDBREPORT out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is PDBREPORT in simple terms?

Why does PDBREPORT 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 PDBREPORT?

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 PDBREPORT.