7CAP: Cyclic Lys48-linked triubiquitin

Cyclic Lys48-linked triubiquitin. Determined by X-ray diffraction at 1.33 Å resolution. Released 19 Aug 2020.

Method: X-ray diffraction
Resolution: 1.33 Å
Organism: Homo sapiens
Chains: 3
Atoms: 2,116
Mol. weight: 26.12 kDa
Ligands: ZN
Released: 19 Aug 2020

Explore 7CAP in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

7CAP contains 16 α-helices and 23 β-strands across 3 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: 6 helices, 8 β-strands

Element	Residues	Length	Sheet
β-strand	2-6	5	1
α-helix	11	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
β-strand	66-71	6	1
α-helix	72-73	2
β-strand	74	1	3

Chain B: 5 helices, 7 β-strands

Element	Residues	Length	Sheet
β-strand	2-6	5	4
β-strand	12-16	5	4
β-strand	22	1	5
α-helix	23-34	12
α-helix	38-40	3
β-strand	41-45	5	4
β-strand	48-49	2	4
α-helix	50-51	2
β-strand	55	1	5
α-helix	57-59	3
β-strand	66-71	6	4
α-helix	72-73	2

Chain C: 5 helices, 8 β-strands

Element	Residues	Length	Sheet
β-strand	2-6	5	3
α-helix	11	1
β-strand	12-16	5	3
β-strand	22	1	6
α-helix	23-34	12
α-helix	38-40	3
β-strand	41-45	5	3
β-strand	48-49	2	3
α-helix	50-51	2
β-strand	55	1	6
α-helix	57-59	3
β-strand	66-71	6	3
β-strand	74	1	4

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Ubiquitin	A, B, C	protein	76	Homo sapiens	P0CG47 (AlphaFold model)

Sequence of entity 1 (A, B, C), FASTA

>7CAP_1 Ubiquitin (chains A, B, C)
MQIFVKTLTGKTITLEVEPSDTIENVKAKIQDKEGIPPDQQRLIFAGKQLEDGRTLSDYN
IQKESTLHLVLRLRGG

Ligands and cofactors

ID	Name	Formula	Copies
ZN	Zinc ion	Zn	6

Primary citation

NMR Characterization of Conformational Interconversions of Lys48-Linked Ubiquitin Chains. Hiranyakorn, M., Yanaka, S., Satoh, T. et al. Int J Mol Sci (2020) 21. DOI 10.3390/ijms21155351 · PubMed

Other PDB entries of the same protein (UniProt P0CG47 (AlphaFold model), which also has an AlphaFold model), best resolution first:

5NVG 1.07 Å, Thr12 Phosphorylated Ubiquitin
5TOG 1.08 Å, Room temperature structure of ubiquitin variant u7ub25.2540
5TOF 1.12 Å, Room temperature structure of ubiquitin variant u7ub25
4XOF 1.15 Å, Observing the overall rocking motion of a protein in a crystal - Orthorhombic Ubiquitin…
5GOD 1.15 Å, Lys27-linked di-ubiquitin
5GOB 1.15 Å, Lys6-linked di-ubiquitin
5W46 1.18 Å, Structure of S65D Phosphomimetic Ubiquitin Refined at 1.2 Angstroms Resolution
7S6O 1.25 Å, The crystal structure of Lys48-linked di-ubiquitin
8IC9 1.25 Å, Lys48-linked K48C-diubiquitin
5DK8 1.32 Å, Human ubiquitin in the P1 space group
5V1Y 1.42 Å, Crystal structure of the ternary RPN13 PRU-RPN2 (940-953)-ubiquitin complex
5KYC 1.43 Å, Crystal structure of USP7 catalytic domain [V302K] mutant in complex with ubiquitin…

Browse structure collections

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