protein data bank~~

The Protein Data Bank (PDB) is a repository for the 3-D structural data of large biological molecules, such as proteins and nucleic acids. (See also crystallographic database). The data, typically obtained by X-ray crystallography or NMR spectroscopy and submitted by biologists and biochemists from around the world, are freely accessible on the Internet via the websites of its member organisations (PDBe, PDBj, and RCSB). The PDB is overseen by an organization called the Worldwide Protein Data Bank, wwPDB.
The PDB is a key resource in areas of structural biology, such as structural genomics. Most major scientific journals, and some funding agencies, such as the NIH in the USA, now require scientists to submit their structure data to the PDB. If the contents of the PDB are thought of as primary data, then there are hundreds of derived (i.e., secondary) databases that categorize the data differently. For example, both SCOP and CATH categorize structures according to type of structure and assumed evolutionary relations; GO categorize structures based on genes.

image of ftsh peptidase

Gene Ontology

Molecular function	GTP binding
Biological process	SRP-dependent cotranslational protein targeting to membrane

EC#: 3.6.5.4 
Authors:

Estrozi, L.F.,   Boehringer, D.,   Shan, S.-O.,   Ban, N.,   Schaffitzel, C. 
Experiment: ELECTRON MICROSCOPY

Chains:A

image of thermolysin

Gene Ontology

Molecular function

metalloendopeptidase activity

EC#: 3.4.24.27
Authors:   Juers, D.H.,   Weik, M.
Experiment: X-RAY DIFFRACTION with resolution of 2.20 Å
Chains:E

image of leucyl aminopeptidase

Gene Ontology

Cellular component	intracellular
Molecular function	aminopeptidase activity
Biological process	proteolysis

EC# : 3.4.11.1
Authors:   Natarajan, S.,   Huynh, K.-H.,   Kang, L.W.
Experiment:X-RAY DIFFRACTION with resolution of 2.60 Å
Chains:A, B