MolNFT v1 · #11843 · protein

E. COLI (lacz) beta-galactosidase (E537Q) in complex with lactose

1JYN: “E. COLI (lacz) beta-galactosidase (E537Q) in complex with lactose”. X-ray diffraction, 4 ligands (BGC, GAL, NA), 20 pockets (best druggability 0.80). MolNFT v1 #11843 on GenesisL1: 3D structure, binding sites and pockets in GL1X.

PDB: 1JYN
Type: protein
Length: 4,044 residues
Chains: 4
Method: x-ray diffraction
Collection: MolNFT v1 / PDB
Contract: 0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner: 0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule: Beta-galactosidase
EC: 3.2.1.23
UniProt: P00722
Ligands: BGC, GAL, NA, MG
Pockets: 20 · best druggability 0.80

Structure

x-ray diffraction · 1 distinct chain · 13% helix, 41% strand (DSSP).

Chain	Molecule	Type	Residues	Secondary structure	UniProt
A, B, C, D	Beta-galactosidase (EC 3.2.1.23)	protein	1011	13% helix, 41% strand	P00722

Ligands and binding sites

BGC · beta-D-glucopyranose · sugar · 4 copies · chains A, D, B, C
GAL · beta-D-galactopyranose · sugar · 4 copies · chains A, B, C, D
NA · Sodium ion · metal · 15 copies · chains A, B, C, D
MG · Magnesium ion · metal · 14 copies · chains A, B, C, D
DMS · Dimethyl sulfoxide · additive · 96 copies · chains A, D, B, C

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

Pockets

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

Pocket	Volume (Å³)	Druggability	Buriedness	Lining residues	Inside
1	816	0.80	0.83	89	empty
2	748	0.79	0.83	109	DMS
3	706	0.79	0.83	95	DMS
4	570	0.76	0.83	68	empty
5	465	0.73	0.83	61	DMS

Interfaces

6 interfaces between chains.

A–D · 2364 Å² buried · 33 hydrogen bonds · protein-protein
B–C · 2356 Å² buried · 33 hydrogen bonds · protein-protein
A–B · 2018 Å² buried · 33 hydrogen bonds · protein-protein
C–D · 2007 Å² buried · 31 hydrogen bonds · protein-protein
B–D · 135 Å² buried · 3 hydrogen bonds · protein-protein

Compared structures

1JYN · E. COLI (lacZ) BETA-GALACTOSIDASE (E537Q) IN COMPLEX WITH LACTOSE · the same entry in another collection · chain D against D, TM-score 1.00
P00722 · AlphaFold monomer V2.0 prediction for beta-galactosidase (P00722) · a predicted model of the same protein · chain D against A, 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 P00722
Elsewhere: RCSB PDB 1JYN · PDBe 1JYN · UniProt P00722

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