This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.
Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.
1bui
From Proteopedia
|
STRUCTURE OF THE TERNARY MICROPLASMIN-STAPHYLOKINASE-MICROPLASMIN COMPLEX: A PROTEINASE-COFACTOR-SUBSTRATE COMPLEX IN ACTION.
Overview
The serine proteinase plasmin is the key fibrinolytic enzyme that, dissolves blood clots and also promotes cell migration and tissue, remodeling. Here, we report the 2.65 A crystal structure of a ternary, complex of microplasmin-staphylokinase bound to a second microplasmin. The, staphylokinase 'cofactor' does not affect the active-site geometry of the, plasmin 'enzyme', but instead modifies its subsite specificity by, providing additional docking sites for enhanced presentation of the, plasminogen 'substrate' to the 'enzymes's' active site. The activation, loop of the plasmin 'substrate', cleaved in these crystals, can be, reconstructed to show how it runs across the active site of the plasmin, 'enzyme' prior to activation cleavage. This is the first experimental, structure of a ... [(full description)]
About this Structure
1BUI is a [Protein complex] structure of sequences from [Homo sapiens]. Active as [Plasmin], with EC number [3.4.21.7]. Structure known Active Sites: ASA and ASB. Full crystallographic information is available from [OCA].
Reference
The ternary microplasmin-staphylokinase-microplasmin complex is a proteinase-cofactor-substrate complex in action., Parry MA, Fernandez-Catalan C, Bergner A, Huber R, Hopfner KP, Schlott B, Guhrs KH, Bode W, Nat Struct Biol. 1998 Oct;5(10):917-23. PMID:9783753
Page seeded by OCA on Tue Oct 30 14:57:40 2007
