1CRN: Crambin

Water structure of a hydrophobic protein at atomic resolution. Pentagon rings of water molecules in crystals of crambin. Determined by X-ray diffraction at 1.5 Å resolution. Released 28 Jul 1981.

Method: X-ray diffraction
Resolution: 1.5 Å
Organism: Crambe hispanica subsp. abyssinica
Chains: 1
Atoms: 327
Mol. weight: 4.74 kDa
Released: 28 Jul 1981

Explore 1CRN in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

1CRN contains 3 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: 3 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
α-helix	42-44	3

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Crambin	A	protein	46	Crambe hispanica subsp. abyssinica	P01542 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>1CRN_1 CRAMBIN (chains A)
TTCCPSIVARSNFNVCRLPGTPEAICATYTGCIIIPGATCPGDYAN

Primary citation

Water structure of a hydrophobic protein at atomic resolution: Pentagon rings of water molecules in crystals of crambin. Teeter, M.M. Proc Natl Acad Sci U S A (1984) 81:6014-6018. DOI 10.1073/pnas.81.19.6014 · 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

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1CRN is part of these collections:

Classic small proteins for teaching

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