Show Notes
This release contains only the music track from Base by Base Episode 395.
Song title: Context Writes the Curve
Original Base by Base episode: 395: Extended sequence context shapes mutational bias in Escherichia coli
Article metadata:
Article title: Extended sequence context shapes mutational bias in Escherichia coli
Journal: PNAS
DOI: 10.1073/pnas.2601345123
Reference: Green R., Jago M.J., Knight C.G., Czernuszka M.R., Denisova S., Krašovec R., Lagator M. Extended sequence context shapes mutational bias in Escherichia coli. PNAS. 2026;123(23):e2601345123. doi:10.1073/pnas.2601345123.
Lyrics:
Verse 1
Under white lights, counting quiet change
Tiny letters drift, then rearrange
Not random thunder, not a simple roll
The neighborhood matters to the whole
Pre-Chorus
Six steps left and six steps right
Set the odds in the copying night
And further out, that GC tide
Pulls the needle where mutations hide
Chorus
It’s the context, it’s the curve
Where the missteps learn to swerve
Runs of letters spark like flint
Hotspots shouting what they meant
Read the pattern, hold it tight
Context writes the future’s light
Verse 2
Long strings stutter—same beat, same sound
A tiny slip, then it’s spellbound
Proofreading catches some on the run
Mismatch repair lets others be done
Leading, lagging—two roads through time
Same code, different uphill climb
Bridge
Zoom out—windows a thousand wide
GC shadows shift the ride
Mask the bias, then reveal
What the polymerase can’t help but feel
If we map where errors start
We can guess evolution’s next chart
Final Chorus
It’s the context, it’s the curve
Where the missteps learn to swerve
Runs of letters spark like flint
Hotspots shouting what they meant
From small repeats to regions bright
We can model what comes next in sight
Read the pattern, hold it tight
Context writes the future’s light
