1MUJ

Crystal structure of murine class II MHC I-Ab in complex with a human CLIP peptide

• PDB DOI: https://doi.org/10.2210/pdb1MUJ/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Mus musculus, Homo sapiens
• Expression System: Drosophila melanogaster
• Mutation(s): No 


• Deposited: 2002-09-23 Released: 2003-02-18 
• Deposition Author(s): Zhu, Y., Wilson, I.A.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free: 0.246 
• R-Value Work: 0.220 
• R-Value Observed: 0.220 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 3-mer - A2B1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 48.76 kDa 
• Atom Count: 3,311 
• Modelled Residue Count: 384 
• Deposited Residue Count: 423 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
H-2 CLASS II HISTOCOMPATIBILITY ANTIGEN, A-B ALPHA CHAIN	A	190	Mus musculus	Mutation(s): 0
UniProt
Find proteins for P14434 (Mus musculus) Explore P14434  Go to UniProtKB:  P14434

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
H-2 CLASS II HISTOCOMPATIBILITY ANTIGEN, A BETA CHAIN	B	197	Mus musculus	Mutation(s): 0
UniProt
Find proteins for P14483 (Mus musculus) Explore P14483  Go to UniProtKB:  P14483

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
CLIP peptide	C	36	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P04233 (Homo sapiens) Explore P04233  Go to UniProtKB:  P04233
PHAROS:  P04233 GTEx:  ENSG00000019582

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	D [auth A], E [auth B]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free: 0.246 
• R-Value Work: 0.220 
• R-Value Observed: 0.220 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 63.647	α = 90
b = 88.065	β = 92.48
c = 83.74	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-02-18 
Deposition Author(s): Zhu, Y., Wilson, I.A.

Revision History  

• Version 1.0: 2003-02-18
  Type: Initial release
  
• Version 1.1: 2008-04-28
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.3: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Data collection, Database references, Derived calculations, Structure summary