Structure of PDB 3ws1 Chain B Binding Site BS02

Receptor Information

>3ws1 Chain B (length=360) Species: 169132 (Chromohalobacter sp. 560)

RQTREVLDPIVASLMEAQQIPGMAIALVRPEGTTISHYGAADRETGTPVD
DDTLFEIGSLSKTLTATLASLAEVEGKLDFDAPVSRYLPELEGSAFDDIS
GLNLGTHTGGGLPLFVPDEVTDRASLMAWYREWQPTEPIGESRTYSNLGI
GLLGLETAASLDGEFVPTMRAKVLAPLGMQDTWYDVPEARMADYAMGEDK
DGQPTRVSPGVLDDEAYGIKTTAADLAKLVRANLHLADVDAELQQAIDAT
RQGHYRVGDMTQALIWEQYSLPVAPETLRAGQGYDMILEPNAAEALEPPQ
SPRDDVWVNKTGSTQGFGGYIVMLPGKHTGLVMLANKNYPNDARVEAAYR
ILSGLGAIDV

Ligand information

• Ligand ID: CA
• InChI: InChI=1S/Ca/q+2
• InChIKey: BHPQYMZQTOCNFJ-UHFFFAOYSA-N
• SMILES:
  CACTVS 3.341: [Ca++]
  ACDLabs 10.04
  OpenEye OEToolkits 1.5.0: [Ca+2]
• Formula: Ca
• Name: CALCIUM ION
• DrugBank: DB14577
• PDB chain: 3ws1 Chain B Residue 403

Receptor-Ligand Complex Structure

Structure summary

• PDB: 3ws1 Structure of a highly acidic beta-lactamase from the moderate halophile Chromohalobacter sp. 560 and the discovery of a Cs(+)-selective binding site
• Resolution: 1.8 Å
• Binding residue (original residue number in PDB): D291 E295
• Binding residue (residue number reindexed from 1): D285 E289
• Annotation score: 1

Enzymatic activity

• Catalytic site (original residue number in PDB): S65 K68 Y151 E273 K316 S319
• Catalytic site (residue number reindexed from 1): S59 K62 Y145 E267 K310 S313
• Enzyme Commision number: 3.5.2.6: beta-lactamase.

Gene Ontology

Molecular Function

• GO:0008800 beta-lactamase activity
• GO:0016787 hydrolase activity
• GO:0046872 metal ion binding

Biological Process

• GO:0017001 antibiotic catabolic process
• GO:0046677 response to antibiotic

Cellular Component

• GO:0030288 outer membrane-bounded periplasmic space

External links

• PDB: RCSB:3ws1, PDBe:3ws1, PDBj:3ws1
• PDBsum: 3ws1
• PubMed: 25760604
• UniProt: Q76LX5