1RNM

RIBONUCLEASE A COMPLEX WITH CYTIDYLIC ACID (5'CMP) CRYSTALLIZED FROM 80% AMMONIUM SULPHATE

• PDB DOI: https://doi.org/10.2210/pdb1RNM/pdb

• Classification: COMPLEX (HYDROLASE/CYTIDYLIC ACID)
• Organism(s): Bos taurus
• Mutation(s): No 


• Deposited: 1995-11-08 Released: 1996-04-03 
• Deposition Author(s): Fedorov, A.A., Almo, S.C.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work: 0.158 
• R-Value Observed: 0.158 

Literature

Structure of the Crystalline Complex of Bovine Pancreatic Ribonuclease A and Cytidylic Acid

Fedorov, A.A., Josef-Mccarthy, D., Graf, I., Anguelova, D., Fedorov, E.V., Almo, S.C.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 14.32 kDa 
• Atom Count: 1,067 
• Modelled Residue Count: 124 
• Deposited Residue Count: 124 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RIBONUCLEASE A	A [auth E]	124	Bos taurus	Mutation(s): 0  EC: 3.1.27.5
UniProt
Find proteins for P61823 (Bos taurus) Explore P61823  Go to UniProtKB:  P61823

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
C5P	E	CYTIDINE-5'-MONOPHOSPHATE C9 H14 N3 O8 P IERHLVCPSMICTF-XVFCMESISA-N
SO4	B [auth E], C [auth E], D [auth E]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Binding Affinity Annotations
ID	Source	Binding Affinity
C5P	PDBBind:  1RNM	Ki: 8.44e+5 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work: 0.158 
• R-Value Observed: 0.158 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 65.63	α = 90
b = 65.63	β = 90
c = 65.38	γ = 120

Software Package:

Software Name	Purpose
XDS	data scaling
X-PLOR	model building
PROFFT	refinement
X-PLOR	refinement
XDS	data reduction
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1996-04-03 
Deposition Author(s): Fedorov, A.A., Almo, S.C.

Revision History  

• Version 1.0: 1996-04-03
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2019-07-17
  Changes: Data collection, Refinement description
• Version 1.4: 2019-08-14
  Changes: Data collection, Refinement description