Structure of PDB 8vtk Chain M

Receptor sequence

>8vtkM (length=301) Species: 1063 (Cereibacter sphaeroides)

EYQNIFSQVQVRGPADLGMTEDVNLANRSGVGPFSTLLGWFGNAQLGPIY
LGSLGVLSLFSGLMWFFTIGIWFWYQAGWNPAVFLRDLFFFSLEPPAPEY
GLSFAAPLKEGGLWLIASFFMFVAVWSWWGRTYLRAQALGMGKHTAWAFL
SAIWLWMVLGFIRPILMGSWSEAVPYGIFSHLDWTNNFSLVHGNLFYNPF
HGLSIAFLGGSALLFAMHGATILAVSRFGGERELEQIADRGTAAERAALF
VRWTMGFNATMEGIHRWAIWMAVLVTLTGGIGILLSGTVVDNWYVWGQNH
G

3D structure

• PDB: 8vtk Crystal structure of R.sphaeroides Photosynthetic Reaction Center variant Y(M210)2-chlorophenylalanine
• Chain: M
• Resolution: 3.07 Å

Interaction with ligand

Site #	Ligand	Ligand chain	Binding residues on receptor (original residue number in PDB)	Binding residues on receptor (residue number reindexed from 1)	Binding affinity
BS01	BPH	M	L60 G63 L64 F67 W129 F150 A153	L59 G62 L63 F66 W128 F149 A152
BS02	BCL	M	F197 G203 I206 A207 X210	F196 G202 I205 A206 X209
BS03	BPH	M	X210 L214 M218 M256	X209 L213 M217 M255
BS04	BCL	M	L156 W157 T186 N187 F189 L196 F197 H202 S205 I206 V276 G280 I284	L155 W156 T185 N186 F188 L195 F196 H201 S204 I205 V275 G279 I283
BS05	SPO	M	F67 G71 W75 W115 S119 F120 W157 F162 H182	F66 G70 W74 W114 S118 F119 W156 F161 H181
BS06	BCL	M	L160 H182 L183	L159 H181 L182

Gene Ontology

Molecular Function

• GO:0042314 bacteriochlorophyll binding
• GO:0045156 electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity
• GO:0046872 metal ion binding

Biological Process

• GO:0009772 photosynthetic electron transport in photosystem II
• GO:0015979 photosynthesis
• GO:0019684 photosynthesis, light reaction

Cellular Component

• GO:0016020 membrane
• GO:0030077 plasma membrane light-harvesting complex
• GO:0042717 plasma membrane-derived chromatophore membrane

External links

• PDB: RCSB:8vtk, PDBe:8vtk, PDBj:8vtk
• PDBsum: 8vtk
• UniProt: Q3J1A6|RCEM_CERS4 Reaction center protein M chain (Gene Name=pufM)