2FD9: Crambin

X-ray Crystal Structure of Chemically Synthesized Crambin-{alpha}carboxamide. Determined by X-ray diffraction at 1.6 Å resolution. Released 16 Jan 2007.

Method: X-ray diffraction
Resolution: 1.6 Å
Chains: 1
Atoms: 309
Mol. weight: 4.74 kDa
Released: 16 Jan 2007

Explore 2FD9 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

2FD9 contains 2 α-helices and 2 β-strands across 1 chain. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.

Chain A: 2 helices, 2 β-strands

Element	Residues	Length	Sheet
β-strand	2-3	2	1
α-helix	7-17	11
α-helix	23-30	8
β-strand	33-34	2	1

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Crambin	A	protein	46		P01542 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>2FD9_1 Crambin (chains A)
TTCCPSIVARSNFNVCRLPGTPEALCATYTGCIIIPGATCPGDYAN

Primary citation

Role of a salt bridge in the model protein crambin explored by chemical protein synthesis: X-ray structure of a unique protein analogue, [V15A]crambin-alpha-carboxamide. Bang, D., Tereshko, V., Kossiakoff, A.A. et al. Mol Biosyst (2009) 5:750-756. DOI 10.1039/b903610e · PubMed

Other PDB entries of the same protein (UniProt P01542 (AlphaFold model), which also has an AlphaFold model), best resolution first:

3NIR 0.48 Å, Crystal structure of small protein crambin at 0.48 A resolution
1EJG 0.54 Å, Crambin at ultra-high resolution: valence electron density.
9EWK 0.7 Å, Solvent organization in ultrahigh-resolution protein crystal structure at room temperature
1CBN 0.83 Å, Atomic resolution (0.83 Å) crystal structure of the hydrophobic protein crambin at 130 K
3U7T 0.85 Å, Room temperature ultra-high resolution time-of-flight neutron and X-ray diffraction…
9PIS 0.85 Å, Ab initio structure of crambin by MicroED at 0.85A
1AB1 0.89 Å, Si form crambin
1JXT 0.89 Å, Crambin mixed sequence form at 160 K. Protein/water substates
1JXW 0.89 Å, Crambin mixed sequence form at 180 K. Protein/water substates
1JXX 0.89 Å, Crambin mixed sequence form at 200 K. Protein/water substates
1JXY 0.89 Å, Crambin mixed sequence form at 220 K. Protein/water substates
1JXU 0.99 Å, Crambin mixed sequence form at 240 K. Protein/water substates

Browse structure collections

About this viewer

MolViewer shows 2FD9 directly in your browser with nothing to install. Switch between cartoon, ball-and-stick, spacefill and surface views, color by chain, secondary structure or B-factor, measure distances, angles and dihedrals, and share or embed the view.