1AAR: Di-ubiquitin

Name: PDB 1AAR: Structure of a diubiquitin conjugate and a model for interaction with ubiquitin conjugating enzyme (E2)
Published: 1993-10-31
License: https://creativecommons.org/publicdomain/zero/1.0/
Keywords: ubiquitin

Structure of a diubiquitin conjugate and a model for interaction with ubiquitin conjugating enzyme (E2). Determined by X-ray diffraction at 2.3 Å resolution. Released 31 Oct 1993.

Method: X-ray diffraction
Resolution: 2.3 Å
Organism: Bos taurus
Chains: 2
Atoms: 1,218
Mol. weight: 17.15 kDa
Released: 31 Oct 1993

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

Secondary structure: helices and β-sheets

1AAR contains 7 α-helices and 14 β-strands across 2 chains. 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, 7 β-strands

Element	Residues	Length	Sheet
β-strand	2-7	6	1
β-strand	12-16	5	1
β-strand	22	1	2
α-helix	23-34	12
α-helix	38-40	3
β-strand	41-45	5	1
β-strand	48-49	2	1
α-helix	50-51	2
β-strand	55	1	2
β-strand	66-71	6	1

Chain B: 4 helices, 7 β-strands

Element	Residues	Length	Sheet
β-strand	2-7	6	1
β-strand	12-16	5	1
β-strand	22	1	3
α-helix	23-34	12
α-helix	38-40	3
β-strand	41-45	5	1
β-strand	48-49	2	1
α-helix	50-51	2
β-strand	55	1	3
α-helix	57-59	3
β-strand	66-71	6	1

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Di-ubiquitin	A, B	protein	76	Bos taurus	P0CH28 (AlphaFold model)

Sequence of entity 1 (A, B), FASTA

>1AAR_1 DI-UBIQUITIN (chains A, B)
MQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEGIPPDQQRLIFAGKQLEDGRTLSDYN
IQKESTLHLVLRLRGG

Primary citation

Structure of a diubiquitin conjugate and a model for interaction with ubiquitin conjugating enzyme (E2). Cook, W.J., Jeffrey, L.C., Carson, M. et al. J Biol Chem (1992) 267:16467-16471. PubMed

Other PDB entries of the same protein (UniProt P0CH28 (AlphaFold model), which also has an AlphaFold model), best resolution first:

2WWZ 1.4 Å, TAB2 NZF DOMAIN IN COMPLEX WITH Lys63-linked di-ubiquitin, P212121
2ZCC 1.4 Å, Ubiquitin crystallized under high pressure
3M3J 1.6 Å, A new crystal form of Lys48-linked diubiquitin
4XYZ 1.65 Å, Crystal structure of K33 linked di-Ubiquitin
1P3Q 1.7 Å, Mechanism of Ubiquitin Recognition by the CUE Domain of VPS9
2D3G 1.7 Å, Double sided ubiquitin binding of Hrs-UIM
6A42 1.7 Å, R1EN(5-223)-ubiquitin fusion
1WRD 1.75 Å, Crystal structure of Tom1 GAT domain in complex with ubiquitin
1UZX 1.85 Å, A complex of the Vps23 UEV with ubiquitin
2HD5 1.85 Å, USP2 in complex with ubiquitin
2QHO 1.85 Å, Crystal structure of the UBA domain from EDD ubiquitin ligase in complex with ubiquitin
2OOB 1.9 Å, crystal structure of the UBA domain from Cbl-b ubiquitin ligase in complex with ubiquitin

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