1CRM | pdb_00001crm

STRUCTURE AND FUNCTION OF CARBONIC ANHYDRASES

• PDB DOI: https://doi.org/10.2210/pdb1CRM/pdb

• Classification: LYASE (OXO-ACID)
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 1994-03-04 Released: 1995-02-07 
• Deposition Author(s): Yadava, V.S., Kannan, K.K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Observed: 
  0.177 (Depositor) 

Literature

Structure and Function of Carbonic Anhydrases

Kannan, K.K.

(1981) Biomolecular Structure, Conformation, Function And Evolution 1: 165

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 29.7 kDa 
• Atom Count: 2,278 
• Modeled Residue Count: 256 
• Deposited Residue Count: 260 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CARBONIC ANHYDRASE I	A	260	Homo sapiens	Mutation(s): 0  EC: 4.2.1.1 (PDB Primary Data), 4.2.1.69 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P00915 (Homo sapiens) Explore P00915  Go to UniProtKB:  P00915
PHAROS:  P00915 GTEx:  ENSG00000133742

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HG	B [auth A], C [auth A], E [auth A], G [auth A]	MERCURY (II) ION Hg BQPIGGFYSBELGY-UHFFFAOYSA-N
CL	D [auth A], F [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
H2S	H [auth A]	HYDROSULFURIC ACID H2 S RWSOTUBLDIXVET-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
CL	BindingDB:  1CRM	Ki: 6.00e+6 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Observed: 0.177 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 81.85	α = 90
b = 75.31	β = 90
c = 37.759	γ = 90

Software Package:

Software Name	Purpose
PROLSQ	refinement
TOM	refinement
PIKSOL	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1995-02-07 
Deposition Author(s): Yadava, V.S., Kannan, K.K.

Revision History  

• Version 1.0: 1995-02-07
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-11-29
  Changes: Derived calculations, Other
• Version 1.4: 2024-02-07
  Changes: Data collection, Database references, Derived calculations