Rtp and Tus DNA Binding
From Proteopedia
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==RTP== | ==RTP== | ||
| - | RTP is a DNA binding protein from Bacillus Subtilis that uses a helix-loop-helix binding motif. In solution it shows a symmetric structure typical of the winged helix loop helix family, with an unstructured N-terminus end, first alpha helix (a1), unstructured loop that is equivalent to the first beta sheet (B1), helix loop helix structure (a2 - a3), 2 beta sheets with a connecting loop that makes up the 'wing' structure (B2 - B3) and an additional long alpha helix involved in dimerisation (a4). | + | RTP is a DNA binding protein from Bacillus Subtilis that uses a helix-loop-helix binding motif. In solution it shows a symmetric structure typical of the winged helix loop helix family, with an unstructured <scene name='Rtp_and_Tus_DNA_Binding/Nterm/1'>N-terminus</scene> end, first alpha helix <scene name='Rtp_and_Tus_DNA_Binding/Alpha1/1'>(a1)</scene>, unstructured loop that is equivalent to the first beta sheet <scene name='Rtp_and_Tus_DNA_Binding/Beta1/1'>(B1)</scene>, helix loop helix structure (<scene name='Rtp_and_Tus_DNA_Binding/Alpha2/1'>a2</scene>-<scene name='Rtp_and_Tus_DNA_Binding/Alpha3/1'>a3</scene>), 2 beta sheets with a connecting loop that makes up the 'wing' structure <scene name='Rtp_and_Tus_DNA_Binding/Wing/1'>(B2 - B3)</scene> and an additional long alpha helix involved in dimerisation <scene name='Rtp_and_Tus_DNA_Binding/Alpha4/1'>(a4)</scene>. |
| + | Assymmetry of RTP in DNA-binding | ||
| - | + | <scene name='Rtp_and_Tus_DNA_Binding/Wingup/1'>Wing-up</scene>: Contacts upstream with rtp dimer bound to A-site | |
| + | <scene name='Rtp_and_Tus_DNA_Binding/Wingdown/1'>Wing-down</scene>: Contacts with phosphate backbone of downstream DNA | ||
| - | ==Binding to B site== | ||
| - | + | Residues binding to DNA | |
| - | < | + | <Structure load='Lol1.pdb' size='400' caption= color='white'/> |
| - | + | ==3D structures of replication termination protein== | |
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| + | [[Replication Termination Protein]] | ||
Current revision
Replication Termination Proteins
Rtp and Tus These polar fork bocking sites have been found in yeast, pea, frog and human genomes.
RTP
RTP is a DNA binding protein from Bacillus Subtilis that uses a helix-loop-helix binding motif. In solution it shows a symmetric structure typical of the winged helix loop helix family, with an unstructured end, first alpha helix , unstructured loop that is equivalent to the first beta sheet , helix loop helix structure (-), 2 beta sheets with a connecting loop that makes up the 'wing' structure and an additional long alpha helix involved in dimerisation .
Assymmetry of RTP in DNA-binding
: Contacts upstream with rtp dimer bound to A-site
: Contacts with phosphate backbone of downstream DNA
Residues binding to DNA
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