1plc

<table><tr><td colspan='2'>[[1plc]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Lombardy_poplar Lombardy poplar]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1pcy 1pcy]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PLC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1PLC FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CU:COPPER+(II)+ION'>CU</scene></td></tr>

[[https://www.uniprot.org/uniprot/PLAS1_POPNI PLAS1_POPNI]] Participates in electron transfer between P700 and the cytochrome b6-f complex in photosystem I.

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== Publication Abstract from PubMed ==

The structure of the electron-transfer protein, plastocyanin (99 amino acids, one Cu atom, 10,500 Da) from poplar leaves, has been refined at 1.33 A resolution to a residual R = 0.15. The space group is orthorhombic, P2(1)2(1)2(1), a = 29.60 (1), b = 46.86 (3), c = 57.60 (3) A. The 14,303 reflections used in the refinement were obtained from a data set recorded on a four-circle diffractometer with radiation from a sealed fine-focus tube, combined with a data set measured on oscillation films exposed at the DESY synchrotron. The final model comprises 1442 (738 non-H) protein atoms, one Cu atom and 110 solvent molecules. Nine residues are described as disordered. The root-mean-square deviation from ideal bond lengths is 0.016 A and the root-mean-square difference between the positions of the C alpha atoms in this refined model and in the structure previously refined at 1.6 A resolution is 0.11 A. The effects of manual model adjustment, resolution, choice of standard values for geometrical parameters, inclusion of H atoms and inclusion of anomalous-scattering corrections on the copper-site geometry have been explored. The final values of the Cu-ligand bond lengths are: Cu--N(His37) 1.91, Cu--S(Cys84) 2.07, Cu--N(His87) 2.06, Cu--S(Met92) 2.82 A.

 

== References ==

[[Category: Lombardy poplar]]

[[Category: Freeman, H C]]

[[Category: Guss, J M]]

[[Category: Electron transport]]