ISDA

Deposition Date 2006-01-14

Release Date 2006-04-04

Last Version Date 2024-11-20

Entry Detail

PDB ID:

2FOU

Keywords:

LYASE

Title:

Human Carbonic Anhydrase II complexed with two-prong inhibitors

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

0.99 Å

R-Value Free:

0.13

R-Value Work:

0.12

R-Value Observed:

0.12

Space Group:

P 1 21 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Carbonic Anhydrase II
Gene (Uniprot):CA2
Chain IDs:A
Chain Length:260
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P00918 Pfam ID:PF00194 EC:4.2.1.1

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
CMH	A	CYS	S-(METHYLMERCURY)-L-CYSTEINE

Ligand Molecules

B22

GOL

Primary Citation

Ultrahigh resolution crystal structures of human carbonic anhydrases I and II complexed with two-prong inhibitors reveal the molecular basis of high affinity.

Jude, K.M, Banerjee, A.L, Haldar, M.K, Manokaran, S, Roy, B, Mallik, S, Srivastava, D.K, Christianson, D.W.Show

J.Am.Chem.Soc. 128 3011 3018 (2006)

PMID: 16506782 DOI: 10.1021/ja057257n

Abstact

The atomic-resolution crystal structures of human carbonic anhydrases I and II complexed with "two-prong" inhibitors are reported. Each inhibitor contains a benzenesulfonamide prong and a cupric iminodiacetate (IDA-Cu(2+)) prong separated by linkers of different lengths and compositions. The ionized NH(-) group of each benzenesulfonamide coordinates to the active site Zn(2+) ion; the IDA-Cu(2+) prong of the tightest-binding inhibitor, BR30, binds to H64 of CAII and H200 of CAI. This work provides the first evidence verifying the structural basis of nanomolar affinity measured for two-prong inhibitors targeting the carbonic anhydrases.

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Primary Citation of related structures