2spt
From Proteopedia
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|PDB= 2spt |SIZE=350|CAPTION= <scene name='initialview01'>2spt</scene>, resolution 2.5Å | |PDB= 2spt |SIZE=350|CAPTION= <scene name='initialview01'>2spt</scene>, resolution 2.5Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene> | + | |LIGAND= <scene name='pdbligand=CGU:GAMMA-CARBOXY-GLUTAMIC+ACID'>CGU</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=SR:STRONTIUM+ION'>SR</scene> |
| - | |ACTIVITY= [http://en.wikipedia.org/wiki/Thrombin Thrombin], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.5 3.4.21.5] | + | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Thrombin Thrombin], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.5 3.4.21.5] </span> |
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2spt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2spt OCA], [http://www.ebi.ac.uk/pdbsum/2spt PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2spt RCSB]</span> | ||
}} | }} | ||
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[[Category: Thrombin]] | [[Category: Thrombin]] | ||
[[Category: Tulinsky, A.]] | [[Category: Tulinsky, A.]] | ||
| - | [[Category: NAG]] | ||
| - | [[Category: SR]] | ||
[[Category: hydrolase(serine proteinase)]] | [[Category: hydrolase(serine proteinase)]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 05:03:22 2008'' |
Revision as of 02:03, 31 March 2008
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| , resolution 2.5Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , , | ||||||
| Activity: | Thrombin, with EC number 3.4.21.5 | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
DIFFERENCES IN THE METAL ION STRUCTURE BETWEEN SR-AND CA-PROTHROMBIN FRAGMENT 1
Overview
The structure of Sr-prothrombin fragment 1 has been solved and refined by restrained least-squares methods at 2.5-A resolution to a crystallographic R value of 0.167. The protein structure is very similar to that of Ca-fragment 1. A polymeric array of five Sr2+ ions separated by about 4.0 A is buried among six gamma-carboxyglutamic acid (Gla) residues; three other Sr2+ ions interact with other Gla residues and are located further apart. One of these was not found in the Ca-fragment 1 structure. The coordination of the Sr2+ ions resembles that of Ca2+, but there are some significant differences between them. The most notable is the lack of water coordination with Sr2+ ions and two conformations for Gla 8, which change the coordination of Sr-2 and Sr-3. A hexose moiety of an oligosaccharide was located in the vicinity of Asn101 that was flexibly disordered in Ca-fragment 1. The new Sr2+ ion found may be involved in metal ion phospholipid binding interactions along with Sr-1, and Sr-7, Sr-8.
About this Structure
2SPT is a Single protein structure of sequence from Bos taurus. Full crystallographic information is available from OCA.
Reference
Differences in the metal ion structure between Sr- and Ca-prothrombin fragment 1., Seshadri TP, Skrzypczak-Jankun E, Yin M, Tulinsky A, Biochemistry. 1994 Feb 8;33(5):1087-92. PMID:8110739
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