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Crystal structure of N-terminal C1 domain of kaic

Analyse Crystal structure of N-terminal C1 domain of kaic in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
4TL8
Type
protein
Length
1,297 residues
Chains
6
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Circadian clock protein kinase kaic
EC
2.7.11.1
UniProt
Q79PF4
Ligands
AGS, MG, CL
Pockets
20 · best druggability 0.83

Structure

x-ray diffraction · 6 distinct chains · 34% helix, 30% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
ACircadian clock protein kinase kaic (EC 2.7.11.1)protein21534% helix, 30% strandQ79PF4
BCircadian clock protein kinase kaic (EC 2.7.11.1)protein21534% helix, 30% strandQ79PF4
CCircadian clock protein kinase kaic (EC 2.7.11.1)protein22133% helix, 29% strandQ79PF4
DCircadian clock protein kinase kaic (EC 2.7.11.1)protein21734% helix, 29% strandQ79PF4
ECircadian clock protein kinase kaic (EC 2.7.11.1)protein21634% helix, 30% strandQ79PF4
FCircadian clock protein kinase kaic (EC 2.7.11.1)protein21334% helix, 31% strandQ79PF4

Ligands and binding sites

  • AGS · Phosphothiophosphoric acid-adenylate ester · ligand · 6 copies · chains A, B, C, D, E, F
  • MG · Magnesium ion · metal · 6 copies · chains A, B, C, D, E, F
  • CL · Chloride ion · ion · 6 copies · chains A, B, C, D, E, F

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
19800.830.8497MG, CL, AGS
22770.800.9239MG, AGS
33090.790.9044AGS, MG
42670.790.9137MG, AGS
56940.790.8361MG, AGS

Interfaces

6 interfaces between chains.

  • B–C · 1295 Ų buried · 25 hydrogen bonds · protein-protein
  • A–F · 1280 Ų buried · 28 hydrogen bonds · protein-protein
  • C–D · 1252 Ų buried · 20 hydrogen bonds · protein-protein
  • A–B · 1183 Ų buried · 24 hydrogen bonds · protein-protein
  • D–E · 1183 Ų buried · 25 hydrogen bonds · protein-protein

Compared structures

  • 4TL8 · Crystal structure of N-terminal C1 domain of KaiC · the same entry in another collection · chain A against A, TM-score 1.00

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