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Crystal structure of deoxygenated hemoglobin in complex with 5HMF-no at 1.8 ångström

Analyse Crystal structure of deoxygenated hemoglobin in complex with 5HMF-no at 1.8… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
7UD7
Type
protein
Length
574 residues
Chains
4
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Hemoglobin subunit alpha; Hemoglobin subunit beta
UniProt
P69905, P68871
Ligands
HEM, MWC
Pockets
11 · best druggability 0.79

Structure

x-ray diffraction · 2 distinct chains · 79% helix, 0% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, CHemoglobin subunit alphaprotein14178% helix, 0% strandP69905
B, DHemoglobin subunit betaprotein14680% helix, 0% strandP68871

Ligands and binding sites

  • HEM · Protoporphyrin IX containing Fe · ligand · 4 copies · chains A, B, C, D
  • MWC · dihydroxy[(5-methylfuran-2-yl)methoxy]amine · ligand · 2 copies · chains A, B, C, D

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
16680.790.8464MWC
22060.740.8929HEM
32430.730.8729HEM
42020.720.8826HEM
52450.700.8528HEM

Interfaces

6 interfaces between chains.

  • C–D · 864 Ų buried · 10 hydrogen bonds · protein-protein
  • A–B · 833 Ų buried · 11 hydrogen bonds · protein-protein
  • B–C · 728 Ų buried · 10 hydrogen bonds · protein-protein
  • A–D · 717 Ų buried · 9 hydrogen bonds · protein-protein
  • A–C · 314 Ų buried · 8 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 2 covalent (covalent ligand).

Compared structures

  • 7UD7 · Crystal structure of deoxygenated hemoglobin in complex with 5HMF-NO at 1.8 Angstrom · the same entry in another collection · chain D against D, TM-score 1.00
  • P69905 · AlphaFold monomer V2.0 prediction for hemoglobin subunit alpha (P69905) · a predicted model of the same protein · chain C against A, TM-score 1.00
  • P68871 · AlphaFold monomer V2.0 prediction for hemoglobin subunit beta (P68871) · a predicted model of the same protein · chain D against A, TM-score 0.98

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