First time at Proteopedia? Click on the green links: they change the 3D image. Click and drag the molecules. Proteopedia is a 3D, interactive encyclopedia of proteins, RNA, DNA and other molecules. With a free user account, you can edit pages in Proteopedia. Visit the Main Page to learn more.
1hfc
From Proteopedia
| 1hfc, resolution 1.50Å () | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Ligands: | , , | ||||||||
| Activity: | Interstitial collagenase, with EC number 3.4.24.7 | ||||||||
| Domains: | ZnMc_MMP | ||||||||
| |||||||||
| |||||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||
1.56 ANGSTROM STRUCTURE OF MATURE TRUNCATED HUMAN FIBROBLAST COLLAGENASE
The X-ray crystal structure of a 19 kDa active fragment of human fibroblast collagenase has been determined by the multiple isomorphous replacement method and refined at 1.56 A resolution to an R-factor of 17.4%. The current structure includes a bound hydroxamate inhibitor, 88 waters and three metal atoms (two zincs and a calcium). The overall topology of the enzyme, comprised of a five stranded beta-sheet and three alpha-helices, is similar to the thermolysin-like metalloproteinases. There are some important differences between the collagenase and thermolysin families of enzymes. The active site zinc ligands are all histidines (His-218, His-222, and His-228). The presence of a second zinc ion in a structural role is a unique feature of the matrix metalloproteinases. The binding properties of the active site cleft are more dependent on the main chain conformation of the enzyme (and substrate) compared with thermolysin. A mechanism of action for peptide cleavage similar to that of thermolysin is proposed for fibroblast collagenase.
1.56 A structure of mature truncated human fibroblast collagenase., Spurlino JC, Smallwood AM, Carlton DD, Banks TM, Vavra KJ, Johnson JS, Cook ER, Falvo J, Wahl RC, Pulvino TA, et al., Proteins. 1994 Jun;19(2):98-109. PMID:8090713
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
About this Structure
1HFC is a 1 chain structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
- Spurlino JC, Smallwood AM, Carlton DD, Banks TM, Vavra KJ, Johnson JS, Cook ER, Falvo J, Wahl RC, Pulvino TA, et al.. 1.56 A structure of mature truncated human fibroblast collagenase. Proteins. 1994 Jun;19(2):98-109. PMID:8090713 doi:10.1002/prot.340190203
Page seeded by OCA on Wed Feb 18 04:05:02 2009
