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MolNFT v1 · #187809 · protein + DNA

Crystal structure of ligase I with nick duplexes containing cognate G:T

7SXE · DNA ligase 1: “Crystal structure of ligase I with nick duplexes containing cognate G:T”. X-ray diffraction, 1 ligand (AMP), 7 pockets (best druggability 0.84). MolNFT v1 #187809 on GenesisL1: 3D structure, binding sites and pockets…

PDB
7SXE
Type
protein + DNA
Length
674 residues
Chains
4
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
DNA ligase 1; DNA chain 1; DNA chain 2; DNA chain 3
EC
6.5.1.1
UniProt
P18858
Ligands
AMP
Pockets
7 · best druggability 0.84

Structure

x-ray diffraction · 4 distinct chains · 37% helix, 18% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
ADNA ligase 1 (EC 6.5.1.1)protein63837% helix, 18% strandP18858
BDNA chain 1dna11——
CDNA chain 2dna7——
DDNA chain 3dna18——

Ligands and binding sites

  • AMP · Adenosine monophosphate · ligand · chains A, B, C

Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.

Pockets

7 pockets found on a 1 Å grid, 5 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
110680.840.85124AMP
23770.690.8237empty
32560.580.7924empty
4890.520.8323empty
51820.510.7819empty

Interfaces

6 interfaces between chains.

  • A–D · 1367 Ų buried · 33 hydrogen bonds · protein-nucleic
  • A–C · 557 Ų buried · 9 hydrogen bonds · protein-nucleic
  • A–B · 551 Ų buried · 6 hydrogen bonds · protein-nucleic
  • B–D · 521 Ų buried · 55 hydrogen bonds · nucleic-nucleic
  • C–D · 342 Ų buried · 29 hydrogen bonds · nucleic-nucleic

Compared structures

  • 7SXE · Crystal structure of ligase I with nick duplexes containing cognate G:T · the same entry in another collection · chain A against A, TM-score 1.00
  • P18858 · AlphaFold monomer V2.0 prediction for DNA ligase 1 (P18858) · a predicted model of the same protein · chain A against A, TM-score 0.99

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