2ba2: Difference between revisions

[[Image:2ba2.gif|left|200px]]<br /><applet load="2ba2" size="350" color="white" frame="true" align="right" spinBox="true"  

We have determined the crystal structure of the DUF16 domain of unknown function encoded by the gene MPN010 of Mycoplasma pneumoniae at 1.8 A resolution. The crystal structure revealed that this domain is composed of two separated homotrimeric coiled-coils. The shorter one consists of 11 highly conserved residues. The sequence comprises noncanonical heptad repeats that induce a right-handed coiled-coil structure. The longer one is composed of approximately nine heptad repeats. In this coiled-coil structure, there are three distinguishable regions that confer unique structural properties compared with other known homotrimeric coiled-coils. The first part, containing one stutter, is an unusual phenylalanine-rich region that is not found in any other coiled-coil structures. The second part is a highly conserved glutamine-rich region, frequently found in other trimeric coiled-coil structures. The last part is composed of prototype heptad repeats. The phylogenetic analysis of the DUF16 family together with a secondary structure prediction shows that the DUF16 family can be classified into five subclasses according to N-terminal sequences. Based on the structural comparison with other coiled-coil structures, a probable molecular function of the DUF16 family is discussed.

2BA2 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Mycoplasma_pneumoniae Mycoplasma pneumoniae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BA2 OCA].  

[[Category: BSGC, Berkeley Structural Genomics Center.]]

[[Category: Kim, J S.]]

[[Category: Kim, S H.]]

[[Category: Shin, D H.]]

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