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Ternary crystal structures of a human DNA polymerase lambda in complex with DNA and (-)3TC-tp.

Analyse Ternary crystal structures of a human DNA polymerase lambda in complex with DNA… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
4K4H
Type
protein + DNA
Length
1,394 residues
Chains
16
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
DNA polymerase lambda; DNA (5'-D(*CP*GP*GP*CP*GP*GP*TP*AP*CP*TP*G)-3'); DNA…
EC
2.7.7.7, 4.2.99.-
UniProt
Q9UGP5
Ligands
1RZ, CA
Pockets
15 · best druggability 0.78

Structure

x-ray diffraction · 7 distinct chains · 48% helix, 14% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
ADNA polymerase lambda (EC 2.7.7.7, 4.2.99.-)protein32748% helix, 13% strandQ9UGP5
B, F, J, NDNA (5'-D(*CP*GP*GP*CP*GP*GP*TP*AP*CP*TP*G)-3')dna11——
C, G, K, ODNA (5'-D(*CP*AP*GP*TP*AP*C)-3')dna6——
D, H, L, PDNA (5'-D(P*GP*CP*CP*G)-3')dna4——
EDNA polymerase lambda (EC 2.7.7.7, 4.2.99.-)protein32648% helix, 13% strandQ9UGP5
IDNA polymerase lambda (EC 2.7.7.7, 4.2.99.-)protein33248% helix, 15% strandQ9UGP5
MDNA polymerase lambda (EC 2.7.7.7, 4.2.99.-)protein32548% helix, 15% strandQ9UGP5

Ligands and binding sites

  • 1RZ · Lamivudine Triphosphate · ligand · 4 copies · chains A, B, C, E, F, G, I, J, K, M, N, O
  • CA · Calcium ion · metal · 23 copies · chains A, B, C, D, E, G, F, I, K, J, M, O, P, N
  • ACT · Acetate ion · additive · 5 copies · chains A, F, H, I, M

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

Pockets

15 pockets found on a 1 Å grid, 14 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
111700.780.811261RZ, CA
26220.760.8367empty
36110.730.8160empty
411730.700.75621RZ, CA
510220.700.75591RZ, CA

Interfaces

35 interfaces between chains.

  • E–F · 850 Ų buried · 16 hydrogen bonds · protein-nucleic
  • A–B · 844 Ų buried · 14 hydrogen bonds · protein-nucleic
  • I–J · 625 Ų buried · 12 hydrogen bonds · protein-nucleic
  • M–N · 596 Ų buried · 11 hydrogen bonds · protein-nucleic
  • A–M · 509 Ų buried · 7 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 1 disulfide (disulfide).

Compared structures

  • 4K4H · Ternary crystal structures of a human DNA POLYMERASE LAMBDA IN COMPLEX WITH DNA AND… · the same entry in another collection · chain P against P, TM-score 1.00

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