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 9TXL | pdb_00009txl

ITIH4N:MASP-1cf:12A12 F(ab) 2:1:2 complex (Composite)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation

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This is version 1.0 of the entry. See complete history. 

Literature

The plasma protease inhibitor ITIH4 forms oligomeric complexes and senses broader, proteolytic activity

Joergensen, M.H., Andersen, G.R.

To be published.

Macromolecule Content 

  • Total Structure Weight: 238.17 kDa 
  • Atom Count: 14,312 
  • Modeled Residue Count: 1,819 
  • Deposited Residue Count: 2,143 
  • Unique protein chains: 4

Macromolecules

Find similar proteins by:|  3D Structure
Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
Isoform 3 of Inter-alpha-trypsin inhibitor heavy chain H4
A, B
630Homo sapiensMutation(s): 0 
Gene Names: ITIH4, IHRP, ITIHL1, PK120, PRO1851
UniProt & NIH Common Fund Data Resources
Find proteins for Q14624 (Homo sapiens)
Explore Q14624 
Go to UniProtKB:  Q14624
PHAROS:  Q14624
GTEx:  ENSG00000055955 
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ14624
Glycosylation
Glycosylation Sites: 2Go to GlyGen: Q14624-1
Sequence Annotations
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Reference Sequence
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Entity ID: 2
MoleculeChains  Sequence LengthOrganismDetailsImage
Ligand glutamate from MASP-1cf3Homo sapiensMutation(s): 0 
Sequence Annotations
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Reference Sequence
Find similar proteins by:|  3D Structure
Entity ID: 3
MoleculeChains  Sequence LengthOrganismDetailsImage
12A12 mAb F(ab) heavy chain
D, F
227Mus musculusMutation(s): 0 
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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Reference Sequence
Find similar proteins by:|  3D Structure
Entity ID: 4
MoleculeChains  Sequence LengthOrganismDetailsImage
12A12 mAb F(ab) light chain
E, G
213Mus musculusMutation(s): 0 
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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Reference Sequence

Oligosaccharides

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Entity ID: 5
MoleculeChains Length2D Diagram GlycosylationD Interactions
alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
H
4N/AN-Glycosylation
Glycosylation Resources
GlyTouCan: G81315DD
GlyCosmos: G81315DD
GlyGen: G81315DD
Entity ID: 6
MoleculeChains Length2D Diagram GlycosylationD Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
I
3N/AN-Glycosylation
Glycosylation Resources
GlyTouCan: G15407YE
GlyCosmos: G15407YE
GlyGen: G15407YE

Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX1.21.2_5419
RECONSTRUCTIONcryoSPARC4.3

Structure Validation

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Entry History 

& Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Novo Nordisk FoundationDenmarkNNF25OC0101234

Revision History  (Full details and data files)

  • Version 1.0: 2026-09-23
    Type: Initial release