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1pop
From Proteopedia
| 1pop, resolution 2.10Å () | |||||||||
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| Ligands: | |||||||||
| Non-Standard Residues: | , | ||||||||
| Activity: | Papain, with EC number 3.4.22.2 | ||||||||
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| Resources: | FirstGlance, OCA, RCSB, PDBsum | ||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||
Contents |
X-RAY CRYSTALLOGRAPHIC STRUCTURE OF A PAPAIN-LEUPEPTIN COMPLEX
The three-dimensional structure of the papain-leupeptin complex has been determined by X-ray crystallography to a resolution of 2.1 A (overall R-factor = 19.8%). The structure indicates that: (i) leupeptin contacts the S subsites of the papain active site and not the S' subsites; (ii) the 'carbonyl' carbon atom of the inhibitor is covalently bound by the Cys-25 sulphur atom of papain and is tetrahedrally coordinated; (iii) the 'carbonyl' oxygen atom of the inhibitor faces the oxyanion hole and makes hydrogen bond contacts with Gln-19 and Cys-25.
X-ray crystallographic structure of a papain-leupeptin complex., Schroder E, Phillips C, Garman E, Harlos K, Crawford C, FEBS Lett. 1993 Jan 2;315(1):38-42. PMID:8416808
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
About this Structure
1pop is a 2 chain structure with sequence from Carica papaya and Streptomyces roseus. Full crystallographic information is available from OCA.
See Also
Reference
- Schroder E, Phillips C, Garman E, Harlos K, Crawford C. X-ray crystallographic structure of a papain-leupeptin complex. FEBS Lett. 1993 Jan 2;315(1):38-42. PMID:8416808
