1C1F

LIGAND-FREE CONGERIN I

• PDB DOI: https://doi.org/10.2210/pdb1C1F/pdb

• Classification: SUGAR BINDING PROTEIN
• Organism(s): Conger myriaster
• Mutation(s): No 


• Deposited: 1999-03-03 Released: 1999-10-08 
• Deposition Author(s): Shirai, T., Mitsuyama, C., Niwa, Y., Matsui, Y., Hotta, H., Yamane, T., Kamiya, H., Ishii, C., Ogawa, T., Muramoto, K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.247 
• R-Value Work: 0.201 

Literature

High-resolution structure of the conger eel galectin, congerin I, in lactose-liganded and ligand-free forms: emergence of a new structure class by accelerated evolution.

Shirai, T., Mitsuyama, C., Niwa, Y., Matsui, Y., Hotta, H., Yamane, T., Kamiya, H., Ishii, C., Ogawa, T., Muramoto, K.

(1999) Structure 7: 1223-1233

• PubMed: 10545323 
• DOI: https://doi.org/10.1016/s0969-2126(00)80056-8
• Primary Citation of Related Structures:  
  1C1F


• PubMed Abstract: 
  

  Congerin I is a member of the galectin (animal beta-galactoside-binding lectin) family and is found in the skin mucus of conger eel. The galectin family proteins perform a variety of biological activities. Because of its histological localization and activity against marine bacteria and starfish embryos, congerin I is thought to take part in the eels' biological defense system against parasites.

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Organizational Affiliation: 

Department of Biotechnology and Biomaterial Chemistry Graduate School of Engineering, Nagoya University, Chikusa-Ku, Nagoya, 464-8603, Japan. [e-mail]

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 15.36 kDa 
• Atom Count: 1,163 
• Modelled Residue Count: 135 
• Deposited Residue Count: 137 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (CONGERIN I)	A	137	Conger myriaster	Mutation(s): 0
UniProt
Find proteins for P26788 (Conger myriaster) Explore P26788  Go to UniProtKB:  P26788

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.247 
• R-Value Work: 0.201 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 94.34	α = 90
b = 36.92	β = 90
c = 40.54	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-10-08 
Deposition Author(s): Shirai, T., Mitsuyama, C., Niwa, Y., Matsui, Y., Hotta, H., Yamane, T., Kamiya, H., Ishii, C., Ogawa, T., Muramoto, K.

Revision History  

• Version 1.0: 1999-10-08
  Type: Initial release
  
• Version 1.1: 2008-04-26
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2016-04-20
  Changes: Database references
• Version 1.4: 2023-12-27
  Changes: Data collection, Database references