Homo-heterodimeric complex of the srp gtpases. Determined by X-ray diffraction at 2.05 Å resolution. Released 19 Jan 2004.
Explore 1OKK in 3D Show helices and sheets RCSB PDB PDBe
1OKK contains 26 α-helices and 18 β-strands across 2 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.
| Element | Residues | Length | Sheet |
|---|---|---|---|
| α-helix | 7-14 | 8 | |
| α-helix | 22-23 | 2 | |
| α-helix | 24-40 | 17 | |
| α-helix | 45-61 | 17 | |
| α-helix | 64-66 | 3 | |
| α-helix | 70-85 | 16 | |
| α-helix | 93-95 | 3 | |
| β-strand | 99-104 | 6 | 1 |
| α-helix | 111-123 | 13 | |
| β-strand | 129-133 | 5 | 1 |
| α-helix | 141-152 | 12 | |
| β-strand | 156-158 | 3 | 1 |
| α-helix | 159-160 | 2 | |
| α-helix | 165-179 | 15 | |
| β-strand | 183-187 | 5 | 1 |
| α-helix | 196-209 | 14 | |
| β-strand | 213-219 | 7 | 1 |
| β-strand | 222 | 1 | 2 |
| α-helix | 226-236 | 11 | |
| β-strand | 241-245 | 5 | 1 |
| α-helix | 255-263 | 9 | |
| β-strand | 267-271 | 5 | 1 |
| β-strand | 279-281 | 3 | 1 |
| α-helix | 284-292 | 9 |
| Element | Residues | Length | Sheet |
|---|---|---|---|
| α-helix | 28-41 | 14 | |
| α-helix | 46-57 | 12 | |
| α-helix | 64-75 | 12 | |
| β-strand | 104-108 | 5 | 3 |
| α-helix | 115-127 | 13 | |
| β-strand | 133-136 | 4 | 3 |
| α-helix | 145-156 | 12 | |
| β-strand | 160-161 | 2 | 3 |
| α-helix | 169-183 | 15 | |
| β-strand | 187-190 | 4 | 3 |
| α-helix | 200-216 | 17 | |
| β-strand | 223-229 | 7 | 3 |
| β-strand | 232 | 1 | 2 |
| α-helix | 235-247 | 13 | |
| β-strand | 251-255 | 5 | 3 |
| α-helix | 266-273 | 8 | |
| α-helix | 275-276 | 2 | |
| β-strand | 277-281 | 5 | 3 |
| β-strand | 289-291 | 3 | 3 |
| α-helix | 294-301 | 8 |
| Molecule | Chains | Type | Length | Organism | UniProt |
|---|---|---|---|---|---|
| Signal recognition particle protein | A | protein | 294 | THERMUS AQUATICUS | O07347 (AlphaFold model) |
| Cell division protein ftsy | D | protein | 303 | THERMUS AQUATICUS | P83749 (AlphaFold model) |
>1OKK_1 SIGNAL RECOGNITION PARTICLE PROTEIN (chains A) MFQQLSARLQEAIGRLRGRGRITEEDLKATLREIRRALMDADVNLEVARDFVERVREEAL GKQVLESLTPAEVILATVYEALKEALGGEARLPVLKDRNLWFLVGLQGSGKTTTAAKLAL YYKGKGRRPLLVAADTQRPAAREQLRLLGEKVGVPVLEVMDGESPESIRRRVEEKARLEA RDLILVDTAGRLQIDEPLMGELARLKEVLGPDEVLLVLDAMTGQEALSVARAFDEKVGVT GLVLTKLDGDARGGAALSARHVTGKPIYFAGVSEKPEGLEPFYPERLAGRILGM
>1OKK_2 CELL DIVISION PROTEIN FTSY (chains D) GFFDRLKAGLAKTRERLLKAIPWGGNLEEVLEELEMALLAADVGLSATEEILQEVRASGR KDLKEAVKEKLVGMLEPDERRATLRKLGFNPQKPKPVEPKGRVVLVVGVNGVGKTTTIAK LGRYYQNLGKKVMFCAGDTFRAAGGTQLSEWGKRLSIPVIQGPEGTDPAALAYDAVQAMK ARGYDLLFVDTAGRLHTKHNLMEELKKVKRAIAKADPEEPKEVWLVLDAVTGQNGLEQAK KFHEAVGLTGVIVTKLDGTAKGGVLIPIVRTLKVPIKFVGVGEGPDDLQPFDPEAFVEAL LED
| ID | Name | Formula | Copies |
|---|---|---|---|
| GCP | Phosphomethylphosphonic acid guanylate ester | C11 H18 N5 O13 P3 | 2 |
| MG | Magnesium ion | Mg | 2 |
| BZP | N1-carboxypiperazine | C5 H10 N2 O2 | 2 |
Water and common crystallization additives (SO4, EDO) are not listed.
Heterodimeric Gtpase Core of the Srp Targeting Complex. Focia, P.J., Shepotinovskaya, I.V., Seidler, J.A. et al. Science (2004) 303:373. DOI 10.1126/SCIENCE.1090827 · PubMed
Other PDB entries of the same protein (UniProt O07347 (AlphaFold model), which also has an AlphaFold model), best resolution first:
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