4GSO

structure of Jararacussin-I

Summary for 4GSO

• Entry DOI: 10.2210/pdb4gso/pdb
• Descriptor: Thrombin-like enzyme BjussuSP-1 (2 entities in total)
• Functional Keywords: thrombin-like enzyme, hydrolase
• Biological source: Bothrops jararacussu (Jararacussu)
• Cellular location: Secreted: Q2PQJ3
• Total number of polymer chains: 1
• Total formula weight: 25183.45

Authors

Ullah, A.,Souza, T.C.A.B.,Zanphorlin, L.M.,Mariutti, R.,Sanata, S.V.,Murakami, M.T.,Arni, R.K. (deposition date: 2012-08-28, release date: 2012-12-12, Last modification date: 2024-10-16)

Primary citation

Ullah, A.,Souza, T.A.,Zanphorlin, L.M.,Mariutti, R.B.,Santana, V.S.,Murakami, M.T.,Arni, R.K.
Crystal structure of Jararacussin-I: The highly negatively charged catalytic interface contributes to macromolecular selectivity in snake venom thrombin-like enzymes.
Protein Sci., 22:128-132, 2013

PubMed Abstract: Snake venom serine proteinases (SVSPs) are hemostatically active toxins that perturb the maintenance and regulation of both the blood coagulation cascade and fibrinolytic feedback system at specific points, and hence, are widely used as tools in pharmacological and clinical diagnosis. The crystal structure of a thrombin-like enzyme (TLE) from Bothrops jararacussu venom (Jararacussin-I) was determined at 2.48 Å resolution. This is the first crystal structure of a TLE and allows structural comparisons with both the Agkistrodon contortrix contortrix Protein C Activator and the Trimeresurus stejnegeri plasminogen activator. Despite the highly conserved overall fold, significant differences in the amino acid compositions and three-dimensional conformations of the loops surrounding the active site significantly alter the molecular topography and charge distribution profile of the catalytic interface. In contrast to other SVSPs, the catalytic interface of Jararacussin-I is highly negatively charged, which contributes to its unique macromolecular selectivity.

PubMed: 23139169
DOI: 10.1002/pro.2189

Experimental method

X-RAY DIFFRACTION (2.6 Å)