8IR4: SLF1 BRCT domain

Crystal structure of the SLF1 BRCT domain in complex with a Rad18 peptide containing pS442. Determined by X-ray diffraction at 1.62 Å resolution. Released 15 Nov 2023.

Method
X-ray diffraction
Resolution
1.62 Å
Organism
Homo sapiens
Chains
4
Atoms
4,004
Mol. weight
52.25 kDa
Ligands
IPA, MG
Released
15 Nov 2023

Explore 8IR4 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

8IR4 contains 24 α-helices and 22 β-strands across 4 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: 10 helices, 10 β-strands

ElementResiduesLengthSheet
β-strand9-1351
α-helix17-2711
β-strand33-3421
β-strand45-4841
β-strand5312
α-helix55-628
β-strand66-6831
α-helix71-799
α-helix86-883
β-strand8911
α-helix102-11817
β-strand128-13253
α-helix140-1489
β-strand152-15323
β-strand165-16843
α-helix171-1733
α-helix176-1794
α-helix1851
β-strand186-18833
α-helix190-1978
Chain B: 11 helices, 10 β-strands
ElementResiduesLengthSheet
β-strand9-1354
α-helix17-2711
β-strand33-3424
β-strand45-4844
β-strand5315
α-helix55-628
β-strand66-6834
α-helix71-799
α-helix82-843
α-helix86-883
β-strand8914
α-helix102-11817
β-strand128-13146
α-helix137-14812
β-strand152-15326
α-helix154-1552
β-strand165-16736
α-helix170-17910
α-helix1851
β-strand186-18726
α-helix189-1979
Chain C: 2 helices, 1 β-strand
ElementResiduesLengthSheet
α-helix438-4403
β-strand44512
α-helix446-4516
Chain D: 1 helix, 1 β-strand
ElementResiduesLengthSheet
β-strand44515
α-helix446-4494

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
SMC5-SMC6 complex localization factor protein 1A, Bprotein207Homo sapiensQ9BQI6 (AlphaFold model)
Ser-asp-ser-cys-asn-ser-sep-ser-ser-asp-ile-ile-arg-asp-leu-leu-gluC, Dprotein17Homo sapiensQ9NS91 (AlphaFold model)
Sequence of entity 1 (A, B), FASTA
>8IR4_1 SMC5-SMC6 complex localization factor protein 1 (chains A, B)
MEDGTPKHIIQMTGFKMEEKEALVKLLLKLDCTFIKSEKYKNCTHLIAERLCKSEKFLAA
CAAGKWILTKDYIIHSAKSGRWLDETTYEWGYKIEKDSRYSPQMQSAPKRWREELKRTGA
PGAFHRWKVVLLVRTDKRSDSLIRVLEAGKANVILPKSSPSGITHVIASNARIKAEKEKD
NFKAPFYPIQYLGDFLLEKLEHHHHHH
Sequence of entity 2 (C, D), FASTA
>8IR4_2 SER-ASP-SER-CYS-ASN-SER-SEP-SER-SER-ASP-ILE-ILE-ARG-ASP-LEU-LEU-GLU (chains C, D)
SDSCNSSSSDIIRDLLE

Ligands and cofactors

IDNameFormulaCopies
IPAIsopropyl alcoholC3 H8 O2
MGMagnesium ionMg3

Water and common crystallization additives (CL) are not listed.

Primary citation

Structural insights into Rad18 targeting by the SLF1 BRCT domains. Huang, W., Qiu, F., Zheng, L. et al. J Biol Chem (2023) 299:105288-105288. DOI 10.1016/j.jbc.2023.105288 · PubMed

Other PDB entries of the same protein (UniProt Q9BQI6 (AlphaFold model), which also has an AlphaFold model), best resolution first:

Browse structure collections

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