9JO7 | pdb_00009jo7

CRP-HCAb4 complex

• PDB DOI: https://doi.org/10.2210/pdb9JO7/pdb
• EM Map EMD-61645: EMDB EMDataResource

• Classification: IMMUNE SYSTEM
• Organism(s): Homo sapiens, Vicugna pacos
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2024-09-24 Released: 2025-10-22 
• Deposition Author(s): Li, Y.J.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.68 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

CRP-HCAb4 complex

Li, Y.J.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C5  (Explore in 3D)
Global Stoichiometry: Hetero 10-mer - A5B5 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 180.35 kDa 
• Atom Count: 12,660 
• Modeled Residue Count: 1,605 
• Deposited Residue Count: 1,615 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
C-reactive protein	A, C [auth B], E [auth D], G [auth F], I [auth H]	206	Homo sapiens	Mutation(s): 0  Gene Names: CRP, PTX1
UniProt & NIH Common Fund Data Resources
Find proteins for P02741 (Homo sapiens) Explore P02741  Go to UniProtKB:  P02741
PHAROS:  P02741 GTEx:  ENSG00000132693

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
CRP specific recognition heavy chain antibodie 4 (HCAb4)	B [auth J], D [auth C], F [auth E], H [auth G], J [auth I]	117	Vicugna pacos	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.68 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-10-22 
Deposition Author(s): Li, Y.J.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2025-10-22
  Type: Initial release