7RTZ

X-ray crystallographic structure of a beta-hairpin peptide derived from amyloid beta 14-40

• PDB DOI: https://doi.org/10.2210/pdb7RTZ/pdb

• Classification: DE NOVO PROTEIN
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 2021-08-16 Released: 2022-08-31 
• Deposition Author(s): Samdin, T.D., Kreutzer, A.G., Nowick, J.S.
• Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), National Institutes of Health/National Institute on Aging (NIH/NIA)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.293 
• R-Value Work: 0.263 
• R-Value Observed: 0.266 

Starting Model: experimental

Literature

A beta-Barrel-Like Tetramer Formed by a beta-Hairpin Derived From A beta

Samdin, T.D., Jones, C.R., Guaglianone, G., Kreutzer, A.G., Freites, J.A., Wierzbicki, M., Nowick, J.S.

(2023) Chem Sci 

• DOI: https://doi.org/10.1039/D3SC05185D

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 5.3 kDa 
• Atom Count: 376 
• Modelled Residue Count: 48 
• Deposited Residue Count: 48 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Amyloid-beta protein 40	A, B	24	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P05067 (Homo sapiens) Explore P05067  Go to UniProtKB:  P05067
PHAROS:  P05067 GTEx:  ENSG00000142192

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CL	C [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Modified Residues  2 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
ORN	A, B	L-PEPTIDE LINKING	C5 H12 N2 O2		ALA
SAR	A, B	PEPTIDE LINKING	C3 H7 N O2		GLY

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.293 
• R-Value Work: 0.263 
• R-Value Observed: 0.266 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 44.327	α = 90
b = 44.327	β = 90
c = 64.427	γ = 90

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2022-08-31 
Deposition Author(s): Samdin, T.D., Kreutzer, A.G., Nowick, J.S.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	GM097562
National Institutes of Health/National Institute on Aging (NIH/NIA)	United States	--

Revision History  

• Version 1.0: 2022-08-31
  Type: Initial release
  
• Version 1.1: 2023-10-18
  Changes: Data collection, Refinement description
• Version 1.2: 2023-12-13
  Changes: Database references