1UBQ: Ubiquitin

Structure of ubiquitin refined at 1.8 Å resolution. Determined by X-ray diffraction at 1.8 Å resolution. Released 16 Apr 1987.

Method: X-ray diffraction
Resolution: 1.8 Å
Organism: Homo sapiens
Chains: 1
Atoms: 660
Mol. weight: 8.58 kDa
Released: 16 Apr 1987

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

Secondary structure: helices and β-sheets

1UBQ contains 5 α-helices and 7 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: 5 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
α-helix	57-59	3
α-helix	61-62	2
β-strand	66-71	6	1

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Ubiquitin	A	protein	76	Homo sapiens	P0CG48 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>1UBQ_1 UBIQUITIN (chains A)
MQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEGIPPDQQRLIFAGKQLEDGRTLSDYN
IQKESTLHLVLRLRGG

Primary citation

Structure of ubiquitin refined at 1.8 A resolution. Vijay-Kumar, S., Bugg, C.E., Cook, W.J. J Mol Biol (1987) 194:531-544. DOI 10.1016/0022-2836(87)90679-6 · PubMed

Other PDB entries of the same protein (UniProt P0CG48 (AlphaFold model), which also has an AlphaFold model), best resolution first:

6Q00 0.85 Å, TDP2 UBA Domain Bound to Ubiquitin at 0.85 Angstroms Resolution, Crystal Form 1
1OGW 1.32 Å, Synthetic Ubiquitin with fluoro-Leu at 50 and 67
5NL4 1.32 Å, Crystal structure of Zn1.3-E16V human ubiquitin (hUb) mutant adduct, from a solution 35…
2GBJ 1.35 Å, Crystal Structure of the 9-10 8 Glycine Insertion Mutant of Ubiquitin.
4HK2 1.4 Å, U7Ub25.2540
9FJ3 1.4 Å, Structure of ubiquitin bound of coiled-coil UIM form 2
1XD3 1.45 Å, Crystal structure of UCHL3-UbVME complex
4IUM 1.45 Å, Equine arteritis virus papain-like protease 2 (PLP2) covalently bound to ubiquitin
7UV5 1.45 Å, The crystal structure of Papain-Like Protease of SARS CoV-2, C111S/D286N mutant, in…
5NLF 1.5 Å, Crystal structure of Zn2.7-E16V human ubiquitin (hUb) mutant adduct, from a solution 100…
9F6G 1.5 Å, Human USP30 chimera bound to Ubiquitin-PA
9OVX 1.5 Å, Crystal structure of ubiquitin K27M mutant

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