9TLL | pdb_00009tll

De novo designed single-chain antiparallel coiled-coil hairpin, Sc-apCC-2

PDB DOI: https://doi.org/10.2210/pdb9TLL/pdb

Classification: DE NOVO PROTEIN
Organism(s): synthetic construct
Expression System: Escherichia coli 'BL21-Gold(DE3)pLysS AG
Mutation(s): No

Deposited: 2025-12-11 Released: 2026-08-19
Deposition Author(s): Mylemans, B., Woolfson, D.N.
Funding Organization(s): Biotechnology and Biological Sciences Research Council (BBSRC)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.50 Å
R-Value Free:
0.195 (Depositor), 0.196 (DCC)
R-Value Work:
0.181 (Depositor), 0.182 (DCC)
R-Value Observed:
0.182 (Depositor)

Starting Model: in silico
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wwPDB Validation 3D Report Full Report

This is version 1.0 of the entry. See complete history.

Literature

De Novo-Designed Bifunctional

Mylemans, B., Korona, B., Acevedo-Jake, A.M., MacRae, A., Edwards, T.A., Huang, D.T., Wilson, A.J., Itzhaki, L.S., Woolfson, D.N.

(2026) J Am Chem Soc

DOI: https://doi.org/10.1021/jacs.6c07593

Macromolecule Content

Total Structure Weight: 8.43 kDa
Atom Count: 629
Modeled Residue Count: 69
Deposited Residue Count: 69
Unique protein chains: 1

Macromolecules

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Sc-apCC-2	A	69	synthetic construct	Mutation(s): 0
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
PEG Query on PEG Download:Ideal Coordinates CCD File SDF format, chain H [auth A] MOL2 format, chain H [auth A] mmCIF format, chain H [auth A]	H [auth A]	DI(HYDROXYETHYL)ETHER C₄ H₁₀ O₃ MTHSVFCYNBDYFN-UHFFFAOYSA-N		Interactions Focus chain H [auth A] Interactions & Density Focus chain H [auth A]
SO4 Query on SO4 Download:Ideal Coordinates CCD File SDF format, chain F [auth A] SDF format, chain G [auth A] SDF format, chain C [auth A] SDF format, chain B [auth A] MOL2 format, chain F [auth A] MOL2 format, chain G [auth A] MOL2 format, chain C [auth A] MOL2 format, chain B [auth A] mmCIF format, chain F [auth A] mmCIF format, chain G [auth A] mmCIF format, chain C [auth A] mmCIF format, chain B [auth A]	B [auth A], C [auth A], F [auth A], G [auth A]	SULFATE ION O₄ S QAOWNCQODCNURD-UHFFFAOYSA-L		Interactions Focus chain B [auth A] Focus chain C [auth A] Focus chain F [auth A] Focus chain G [auth A] Interactions & Density Focus chain B [auth A] Focus chain C [auth A] Focus chain F [auth A] Focus chain G [auth A]
GOL Query on GOL Download:Ideal Coordinates CCD File SDF format, chain E [auth A] SDF format, chain D [auth A] MOL2 format, chain E [auth A] MOL2 format, chain D [auth A] mmCIF format, chain E [auth A] mmCIF format, chain D [auth A]	D [auth A], E [auth A]	GLYCEROL C₃ H₈ O₃ PEDCQBHIVMGVHV-UHFFFAOYSA-N		Interactions Focus chain D [auth A] Focus chain E [auth A] Interactions & Density Focus chain D [auth A] Focus chain E [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.50 Å
R-Value Free: 0.195 (Depositor), 0.196 (DCC)
R-Value Work: 0.181 (Depositor), 0.182 (DCC)
R-Value Observed: 0.182 (Depositor)

Space Group: I 4₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 48.237	α = 90
b = 48.237	β = 90
c = 70.272	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

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View more in-depth experimental data

Entry History

& Funding Information

Deposition Data

Released Date: 2026-08-19

Deposition Author(s):

Mylemans, B.

Woolfson, D.N.

Funding Organization	Location	Grant Number
Biotechnology and Biological Sciences Research Council (BBSRC)	United Kingdom	BB/V006231/1
Biotechnology and Biological Sciences Research Council (BBSRC)	United Kingdom	BB/V006703/1
Biotechnology and Biological Sciences Research Council (BBSRC)	United Kingdom	BB/V008412/1
Biotechnology and Biological Sciences Research Council (BBSRC)	United Kingdom	BB/V008412/2