Research workbench
Structural studies of PHE256TRP of human salivary alpha-amylase: implications for the role of a conserved water molecule and its associated chain in enzyme activity
Analyse Structural studies of PHE256TRP of human salivary alpha-amylase: implications… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.
- PDB
- 1Q4N
- Type
- protein
- Length
- 496 residues
- Chains
- 1
- Method
- x-ray diffraction
- Collection
- MolNFT v1 / PDB
- Contract
- 0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
- Owner
- 0x3396CDB397284571d12822B4ae1189a8E22AAAAA
- Molecule
- Alpha-amylase, salivary
- EC
- 3.2.1.1
- UniProt
- P04745
- Ligands
- TAM, CA, CL
- Pockets
- 4 · best druggability 0.58
Structure
x-ray diffraction · 1 distinct chain · 27% helix, 24% strand (DSSP).
| Chain | Molecule | Type | Residues | Secondary structure | UniProt |
|---|---|---|---|---|---|
| X | Alpha-amylase, salivary (EC 3.2.1.1) | protein | 496 | 27% helix, 24% strand | P04745 |
Ligands and binding sites
- TAM · Tris(hydroxyethyl)aminomethane · ligand · chains X
- CA · Calcium ion · metal · chains X
- CL · Chloride ion · ion · chains X
Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.
Pockets
4 pockets found on a 1 Å grid, 1 with a druggability of 0.5 or more.
| Volume (ų) | Druggability | Buriedness | Lining residues | Inside | |
|---|---|---|---|---|---|
| 1 | 266 | 0.58 | 0.78 | 25 | TAM |
| 2 | 64 | 0.34 | 0.77 | 16 | empty |
| 3 | 81 | 0.33 | 0.75 | 22 | empty |
| 4 | 75 | 0.32 | 0.75 | 13 | empty |
Modifications
Observed in the structure: 5 disulfide, 1 modified (disulfide, cyclization).
Compared structures
- 1Q4N · Structural studies of Phe256Trp of human salivary alpha-amylase: implications for the… · the same entry in another collection · chain X against X, TM-score 1.00
Analyse
- Open in the research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides and crosslinks on the 3D structure
- Every structure of UniProt P04745
- Elsewhere: RCSB PDB 1Q4N · PDBe 1Q4N · UniProt P04745
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