2j8o: Difference between revisions
From Proteopedia
Jump to navigationJump to search
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
[[Image:2j8o.jpg|left|200px]]<br /><applet load="2j8o" size=" | [[Image:2j8o.jpg|left|200px]]<br /><applet load="2j8o" size="350" color="white" frame="true" align="right" spinBox="true" | ||
caption="2j8o, resolution 2.49Å" /> | caption="2j8o, resolution 2.49Å" /> | ||
'''STRUCTURE OF THE IMMUNOGLOBULIN TANDEM REPEAT OF TITIN A168-A169'''<br /> | '''STRUCTURE OF THE IMMUNOGLOBULIN TANDEM REPEAT OF TITIN A168-A169'''<br /> | ||
| Line 5: | Line 5: | ||
==Overview== | ==Overview== | ||
Most of the structure of the giant muscle protein titin is formed by small, modular domains. Many of them are predicted to be arranged in repeats with, short linkers that may be key determinants of the peculiar elastic, properties of titin. Here, we present the molecular structure of a tandem, arrangement of two immunoglobulin-like domains, A168 and A169, located, within the A-band segment of titin. The two domains are connected by a 17, residue long beta-strand and form a common interface. Based on these data, we establish general principles to estimate the amount of conformational, flexibility of tandem domain motifs in titin. An unusual bulge within the, second domain, A169, is directly involved into binding to a sarcomeric, ligand, MURF-1, thus suggesting a dual role of this tandem for both the, mechanical properties of titin and for sarcomeric signaling. | Most of the structure of the giant muscle protein titin is formed by small, modular domains. Many of them are predicted to be arranged in repeats with, short linkers that may be key determinants of the peculiar elastic, properties of titin. Here, we present the molecular structure of a tandem, arrangement of two immunoglobulin-like domains, A168 and A169, located, within the A-band segment of titin. The two domains are connected by a 17, residue long beta-strand and form a common interface. Based on these data, we establish general principles to estimate the amount of conformational, flexibility of tandem domain motifs in titin. An unusual bulge within the, second domain, A169, is directly involved into binding to a sarcomeric, ligand, MURF-1, thus suggesting a dual role of this tandem for both the, mechanical properties of titin and for sarcomeric signaling. | ||
==About this Structure== | ==About this Structure== | ||
2J8O is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with GOL as [http://en.wikipedia.org/wiki/ligand ligand]. Active as [http://en.wikipedia.org/wiki/Non-specific_serine/threonine_protein_kinase Non-specific serine/threonine protein kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.11.1 2.7.11.1] Known structural/functional Site: <scene name='pdbsite=AC1:Gol Binding Site For Chain A'>AC1</scene>. Full crystallographic information is available from [http:// | 2J8O is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with <scene name='pdbligand=GOL:'>GOL</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Active as [http://en.wikipedia.org/wiki/Non-specific_serine/threonine_protein_kinase Non-specific serine/threonine protein kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.11.1 2.7.11.1] Known structural/functional Site: <scene name='pdbsite=AC1:Gol Binding Site For Chain A'>AC1</scene>. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2J8O OCA]. | ||
==Reference== | ==Reference== | ||
| Line 45: | Line 42: | ||
[[Category: wd repeat]] | [[Category: wd repeat]] | ||
''Page seeded by [http:// | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jan 23 14:00:26 2008'' | ||
