Sandbox Reserved 766: Difference between revisions

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== Structure ==
== Structure ==
'''Asparagine Synthetase''' is a homodimer comprised of two domains ligated together. ASPS consists of a  
'''Asparagine Synthetase''' is a homodimer comprised of two domains ligated together. ASPS consists of a  
<scene name='56/564042/Glutamine_amidotransferase/1'>Glutamine Amidotransferase Type-2</scene> (residues 2-191) and and <scene name='56/564042/Asparagine_synthetase_complex/1'>Asparagine Synthetase</scene> complex (residues 213-536). There are two specific domains that contain the substrate binding sites. The N-terminal domain which contains two layers of anti-parallel beta sheets comprised of six layers each,(site PDB)this is where the Glutamine binds. A C-terminal domain also exists, it is comprised of five parallel beta sheets with alpha helices on either side of it, (site PDB) this is where the Mg2+, ATP and Aspartic Acid bind. The two active sites contained within the terminal domains are linked together by a tunnel of hydrophobic and polar surface amino acid residues. Specifically <scene name='56/564042/Residue_365/1'>Residue 365</scene> is important for the binding of the Beta-Asparty-AMP intermediate into the enzyme.  
<scene name='56/564042/Glutamine_amidotransferase/1'>Glutamine Amidotransferase Type-2</scene> (residues 2-191) and and <scene name='56/564042/Asparagine_synthetase_complex/1'>Asparagine Synthetase</scene> complex (residues 213-536). There are two specific domains that contain the substrate binding sites. The N-terminal domain which contains two layers of anti-parallel beta sheets comprised of six layers each, this is where the Glutamine binds. A C-terminal domain also exists, it is comprised of five parallel beta sheets with alpha helices on either side of it, <ref>"RCSB Protein Data Bank - RCSB PDB - 1CT9 Structure Summary." RCSB Protein Data Bank - RCSB PDB - 1CT9 Structure Summary. N.p., n.d. Web. 01 Dec. 2013.</ref> this is where the Mg2+, ATP and Aspartic Acid bind. The two active sites contained within the terminal domains are linked together by a tunnel of hydrophobic and polar surface amino acid residues. Specifically <scene name='56/564042/Residue_365/1'>Residue 365</scene> is important for the binding of the Beta-Asparty-AMP intermediate into the enzyme.  
===Amino Acid Composition===
===Amino Acid Composition===