Structure of PDB 1rsm Chain A

Receptor sequence

>1rsmA (length=124) Species: 9913 (Bos taurus)

KETAAAKFERQHMDSSTSAASSSNYCNQMMKSRNLTKDRCKPVNTFVHES
LADVQAVCSQKNVACKNGQTNCYQSYSTMSITDCRETGSSKYPNCAYKTT
QANKHIIVACEGNPYVPVHFDASV

3D structure

• PDB: 1rsm The 2-A resolution structure of a thermostable ribonuclease A chemically cross-linked between lysine residues 7 and 41.
• Chain: A
• Resolution: 2.0 Å

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.

Interaction with ligand

Site #	Ligand	Ligand chain	Binding residues on receptor (original residue number in PDB)	Binding residues on receptor (residue number reindexed from 1)	Binding affinity
BS01	NIN	A	K7 R39 K41	K7 R39 K41

Gene Ontology

Molecular Function

• GO:0003676 nucleic acid binding
• GO:0004519 endonuclease activity
• GO:0004522 ribonuclease A activity
• GO:0004540 RNA nuclease activity
• GO:0005515 protein binding
• GO:0016829 lyase activity

Biological Process

• GO:0050830 defense response to Gram-positive bacterium

Cellular Component

• GO:0005576 extracellular region

External links

• PDB: RCSB:1rsm, PDBe:1rsm, PDBj:1rsm
• PDBsum: 1rsm
• PubMed: 3936036
• UniProt: P61823|RNAS1_BOVIN Ribonuclease pancreatic (Gene Name=RNASE1)