Substrate specificity determinants of human macrophage elastase (MMP-12) based on the 1.1 angstrom crystal structure

Lang R, Kocourek A, Braun M, Tschesche H, Huber R, Bode W, Maskos K (2001)
JOURNAL OF MOLECULAR BIOLOGY 312(4): 731-742.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
Download
Es wurde kein Volltext hochgeladen. Nur Publikationsnachweis!
Autor/in
; ; ; ; ; ;
Abstract / Bemerkung
The macrophage elastase enzyme (MMP-12) expressed mainly in alveolar macrophages has been identified in the mouse lung as the main destructive agent associated with cigarette smoking, which gives rise to emphysema, both directly via elastin degradation and indirectly by disturbing the proteinase/antiproteinase balance via inactivation of the alpha1-proteinase inhibitor (alpha1-PI), the antagonist of the leukocyte elastase. The catalytic domain of human recombinant MMP-12 has been crystallized in complex with the broad-specificity inhibitor batimastat (BB-94). The crystal structure analysis of this complex, determined using X-ray data to 1.1 Angstrom and refined to an R-value of 0.165, reveals an overall fold similar to that of other MMPs. However, the S-shaped double loop connecting strands III and IV is fixed closer to the beta -sheet and projects its His172 side-chain further into the rather hydrophobic active-site cleft, defining the S3 and the S1-pockets and separating them from each other to a larger extent than is observed in other MMPs. The S2-site is planar, while the characteristic S1'-subsite is a continuous tube rather than a pocket, in which the MMP-12-specific Thr215 replaces a Val residue otherwise highly conserved in almost all other MMPs. This alteration might allow MMP-12 to accept P1' Arg residues, making it unique among MMPs. The active-site cleft of MMP-12 is well equipped to bind and efficiently cleave the AlaMetPhe-LeuGluAla sequence in the reactive-site loop of al-PI, as occurs experimentally. Similarities in contouring and particularly a common surface hydrophobicity both inside and distant from the active-site cleft explain why MMP-12 shares many substrates with matrilysin (MMP-7). The MMP-12 structure is an excellent template for the structure-based design of specific inhibitors for emphysema therapy and for the construction of mutants to clarify the role of this MMP. (C) 2001 Academic Press.
Stichworte
emphysema; matrix metalloproteinase; alpha; 1-proteinase inhibitor; crystal structure; elastase
Erscheinungsjahr
2001
Zeitschriftentitel
JOURNAL OF MOLECULAR BIOLOGY
Band
312
Ausgabe
4
Seite(n)
731-742
ISSN
0022-2836
Page URI
https://pub.uni-bielefeld.de/record/1616109

Zitieren

Lang R, Kocourek A, Braun M, et al. Substrate specificity determinants of human macrophage elastase (MMP-12) based on the 1.1 angstrom crystal structure. JOURNAL OF MOLECULAR BIOLOGY. 2001;312(4):731-742.
Lang, R., Kocourek, A., Braun, M., Tschesche, H., Huber, R., Bode, W., & Maskos, K. (2001). Substrate specificity determinants of human macrophage elastase (MMP-12) based on the 1.1 angstrom crystal structure. JOURNAL OF MOLECULAR BIOLOGY, 312(4), 731-742. doi:10.1006/jmbi.2001.4954
Lang, R., Kocourek, A., Braun, M., Tschesche, H., Huber, R., Bode, W., and Maskos, K. (2001). Substrate specificity determinants of human macrophage elastase (MMP-12) based on the 1.1 angstrom crystal structure. JOURNAL OF MOLECULAR BIOLOGY 312, 731-742.
Lang, R., et al., 2001. Substrate specificity determinants of human macrophage elastase (MMP-12) based on the 1.1 angstrom crystal structure. JOURNAL OF MOLECULAR BIOLOGY, 312(4), p 731-742.
R. Lang, et al., “Substrate specificity determinants of human macrophage elastase (MMP-12) based on the 1.1 angstrom crystal structure”, JOURNAL OF MOLECULAR BIOLOGY, vol. 312, 2001, pp. 731-742.
Lang, R., Kocourek, A., Braun, M., Tschesche, H., Huber, R., Bode, W., Maskos, K.: Substrate specificity determinants of human macrophage elastase (MMP-12) based on the 1.1 angstrom crystal structure. JOURNAL OF MOLECULAR BIOLOGY. 312, 731-742 (2001).
Lang, R, Kocourek, A, Braun, M, Tschesche, Harald, Huber, R, Bode, W, and Maskos, K. “Substrate specificity determinants of human macrophage elastase (MMP-12) based on the 1.1 angstrom crystal structure”. JOURNAL OF MOLECULAR BIOLOGY 312.4 (2001): 731-742.

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Quellen

PMID: 11575928
PubMed | Europe PMC

Suchen in

Google Scholar