6IUA: Importin-alpha1

Crystal structure of importin-alpha1 bound to the 53BP1 nuclear localization signal (S1678D). Determined by X-ray diffraction at 1.7 Å resolution. Released 30 Jan 2019.

Method: X-ray diffraction
Resolution: 1.7 Å
Organisms: Mus musculus, Homo sapiens
Chains: 2
Atoms: 3,911
Mol. weight: 48.78 kDa
Released: 30 Jan 2019

Explore 6IUA in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

6IUA contains 33 α-helices and 0 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: 32 helices, 0 β-strands

Element	Residues	Length
α-helix	78-85	8
α-helix	90-104	15
α-helix	112-117	6
α-helix	121-128	8
α-helix	134-148	15
α-helix	152-160	9
α-helix	163-170	8
α-helix	176-190	15
α-helix	194-202	9
α-helix	206-211	6
α-helix	218-220	3
α-helix	223-237	15
α-helix	243-245	3
α-helix	246-260	15
α-helix	265-278	14
α-helix	283-290	8
α-helix	295-302	8
α-helix	307-320	14
α-helix	325-333	9
α-helix	336-339	4
α-helix	340-343	4
α-helix	349-363	15
α-helix	367-375	9
α-helix	378-387	10
α-helix	391-407	17
α-helix	410-418	9
α-helix	422-427	6
α-helix	428-430	3
α-helix	434-454	21
α-helix	457-466	10
α-helix	469-476	8
α-helix	482-495	14

Chain B: 1 helix, 0 β-strands

Element	Residues	Length	Sheet
α-helix	1678-1679	2

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Importin subunit alpha-1	A	protein	427	Mus musculus	P52293 (AlphaFold model)
Peptide from TP53-binding protein 1	B	protein	22	Homo sapiens	Q12888 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>6IUA_1 Importin subunit alpha-1 (chains A)
GTVNWSVEDIVKGINSNNLESQLQATQAARKLLSREKQPPIDNIIRAGLIPKFVSFLGKT
DCSPIQFESAWALTNIASGTSEQTKAVVDGGAIPAFISLLASPHAHISEQAVWALGNIAG
DGSAFRDLVIKHGAIDPLLALLAVPDLSTLACGYLRNLTWTLSNLCRNKNPAPPLDAVEQ
ILPTLVRLLHHNDPEVLADSCWAISYLTDGPNERIEMVVKKGVVPQLVKLLGATELPIVT
PALRAIGNIVTGTDEQTQKVIDAGALAVFPSLLTNPKTNIQKEATWTMSNITAGRQDQIQ
QVVNHGLVPFLVGVLSKADFKTQKEAAWAITNYTSGGTVEQIVYLVHCGIIEPLMNLLSA
KDTKIIQVILDAISNIFQAAEKLGETEKLSIMIEECGGLDKIEALQRHENESVYKASLNL
IEKYFSV

Sequence of entity 2 (B), FASTA

>6IUA_2 Peptide from TP53-binding protein 1 (chains B)
SGKRKLITSEEERDPAKRGRKS

Primary citation

Structural and biochemical characterization of the recognition of the 53BP1 nuclear localization signal by importin-alpha. Matsuura, Y. Biochem Biophys Res Commun (2019) 510:236-241. DOI 10.1016/j.bbrc.2019.01.075 · PubMed

Other PDB entries of the same protein (UniProt P52293 (AlphaFold model), which also has an AlphaFold model), best resolution first:

4UAF 1.7 Å, Importin alpha 1 delta IBB in complex with Influenza PB2 nuclear localization domain
5CTT 1.7 Å, Crystal structure of human SART3/TIP110 NLS-mouse importin alpha complex
6K06 1.75 Å, Crystal structure of Importin-alpha and phosphomimetic GM130
8HE0 1.8 Å, Crystal structure of importin-alpha1 bound to the HIF-1alpha nuclear localization signal…
4YI0 1.81 Å, Structure of mouse importin a1 bound to Pom121NLS
7RG1 1.85 Å, Importin alpha2 in complex with MERS ORF4B H26A mutant
4MZ6 1.88 Å, Structure of importin-alpha: dUTPase S11E NLS mutant complex
3UL1 1.9 Å, Mouse importin alpha: nucleoplasmin cNLS peptide complex
5D5K 1.9 Å, Crystal Structure NLS from human PARP-2 complexed with Importin alpha delta IBB
5UMZ 1.9 Å, Structure of TNRC6A NLS in complex with importin-alpha
6IU7 1.9 Å, Crystal structure of importin-alpha1 bound to the 53BP1 nuclear localization signal…
8FUA 1.9 Å, Crystal structure of mouse Importin alpha in complex with Hendra virus matrix protein NLS1

Browse structure collections

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