Structure of PDB 6yez Chain 3

Receptor sequence

>6yez3 (length=221) Species: 3888 (Pisum sativum)

RPLWFASKQSLSYLDGSLPGDYGFDPLGLSDPEGTGGFIEPRWLAYGEVI
NGRFAMLGAVGAIAPEYLGKVGLIPQETALAWFQTGVIPPAGTYNYWADN
YTLFVLEMALMGFAEHRRFQDWAKPGSMGKQYFLGLEKGFGGSGNPAYPG
GPFFNPLGFGKDEKSLKELKLKEVKNGRLAMLAILGYFIQGLVTGVGPYQ
NLLDHVADPVNNNVLTSLKFH

3D structure

• PDB: 6yez The structure of a triple complex of plant photosystem I with ferredoxin and plastocyanin.
• Chain: 3
• Resolution: 2.7 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	CLA	3	K273 H275	K219 H221
BS02	CA	3	D85 G88 I93	D31 G34 I39
BS03	CHL	3	A163 G166 F167 H170 R171 F187	A109 G112 F113 H116 R117 F133
BS04	CLA	3	R107 M110 L111 Y202 P203 G204 F208 F213 L223 K224 E227 N230	R53 M56 L57 Y148 P149 G150 F154 F159 L169 K170 E173 N176
BS05	CLA	3	K226 L233	K172 L179
BS06	CLA	3	L236 I243 Q244 T248 N255 H259 N267	L182 I189 Q190 T194 N201 H205 N213
BS07	CHL	3	L68 G74 D75 Y76 G77 F78 D79 L98 E102 R232 M235 L236	L14 G20 D21 Y22 G23 F24 D25 L44 E48 R178 M181 L182
BS08	CLA	3	N105 F242	N51 F188
BS09	CLA	3	G115 P119 T132 L134 T139 Y150	G61 P65 T78 L80 T85 Y96
BS10	CLA	3	H259 P263 N266	H205 P209 N212
BS11	CLA	3	V141 I142 P143 Y155 F158 E161	V87 I88 P89 Y101 F104 E107
BS12	CHL	3	I104 R107 F108 A168 R171 R172 D175 F194 P203 F208	I50 R53 F54 A114 R117 R118 D121 F140 P149 F154
BS13	CLA	3	W97 G101 I104 N105 F108 M162 G166 E169 H170 R172 F173	W43 G47 I50 N51 F54 M108 G112 E115 H116 R118 F119
BS14	CLA	3	V141 Y150 W151 L157 E161	V87 Y96 W97 L103 E107
BS15	CLA	3	L127 I128 P129	L73 I74 P75
BS16	CLA	3	M162 H170 F173	M108 H116 F119

Gene Ontology

Biological Process

• GO:0009765 photosynthesis, light harvesting

Cellular Component

• GO:0016020 membrane

External links

• PDB: RCSB:6yez, PDBe:6yez, PDBj:6yez
• PDBsum: 6yez
• PubMed: 33020607
• UniProt: Q32904|CB23_PEA Chlorophyll a-b binding protein 3, chloroplastic (Gene Name=lhca3)