Structure of PDB 1bsr Chain B Binding Site BS01

Receptor Information

>1bsr Chain B (length=124) Species: 9913 (Bos taurus)

KESAAAKFERQHMDSGNSPSSSSNYCNLMMCCRKMTQGKCKPVNTFVHES
LADVKAVCSQKKVTCKNGQTNCYQSKSTMRITDCRETGSSKYPNCAYKTT
QVEKHIIVACGGKPSVPVHFDASV

Ligand information

• Ligand ID: SO4
• InChI: InChI=1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)/p-2
• InChIKey: QAOWNCQODCNURD-UHFFFAOYSA-L
• SMILES:
  OpenEye OEToolkits 1.5.0: [O-]S(=O)(=O)[O-]
  CACTVS 3.341: [O-][S]([O-])(=O)=O
  ACDLabs 10.04: [O-]S([O-])(=O)=O
• Formula: O4 S
• Name: SULFATE ION
• DrugBank: DB14546
• PDB chain: 1bsr Chain B Residue 126

Receptor-Ligand Complex Structure

Structure summary

• PDB: 1bsr Bovine seminal ribonuclease: structure at 1.9 A resolution.
• Resolution: 1.9 Å
• Binding residue (original residue number in PDB): K39 P42
• Binding residue (residue number reindexed from 1): K39 P42
• Annotation score: 3

Enzymatic activity

• Catalytic site (original residue number in PDB): H12 K41 H119 F120 D121
• Catalytic site (residue number reindexed from 1): H12 K41 H119 F120 D121
• Enzyme Commision number: 4.6.1.18: pancreatic ribonuclease.

Gene Ontology

Molecular Function

• GO:0003676 nucleic acid binding
• GO:0004519 endonuclease activity
• GO:0004522 ribonuclease A activity
• GO:0004540 RNA nuclease activity
• GO:0016829 lyase activity
• GO:0042802 identical protein binding

Biological Process

• GO:0050830 defense response to Gram-positive bacterium
• GO:0051607 defense response to virus

Cellular Component

• GO:0005576 extracellular region

External links

• PDB: RCSB:1bsr, PDBe:1bsr, PDBj:1bsr
• PDBsum: 1bsr
• PubMed: 15299514
• UniProt: P00669|RNS_BOVIN Seminal ribonuclease (Gene Name=SRN)