Structure of PDB 4rku Chain A

Receptor sequence

>4rkuA (length=721) Species: 3888 (Pisum sativum)

GHFSRTIAKGPDTTTWIWNLHADAHDFDSHTSDLEEISRKVFSAHFGQLS
IIFLWLSGMYFHGARFSNYEAWLNDPTHIRPSAQVVWPIVGQEILNGDVG
GGFRGIQITSGFFQIWRASGITSELQLYCTAIGALVFAGLMLFAGWFHYH
KAAPKLAWFQDVESMLNHHLAGLLGLGSLSWARHQVHVSLPINQFLNAGV
DPKEIPLPHEFILNRDLLAQLYPSFAEGATPFFTLNWSKYADFLTFRGGL
DPLTGGLWLTDIAHHHLAIAILFLIAGHMYRTNWGIGHGIKDILEAHKGP
FTGQGHKGLYEILTTSWHAQLSINLAMLGSLTIVVAQHMYSMPPYPYLAT
DYATQLSLFTHHMWIGGFLIVGAAAHAAIFMVRDYDPTTRYNDLLDRVLR
HRDAIISHLNWVCIFLGFHSFGLYIHNDTMSALGRPQDMFSDTAIQLQPV
FAQWIQNTHALAPGTTAPGATASTSLTWGGGDLVAVGNKVALLPIPLGTA
DFLVHHIHAFTIHVTVLILLKGVLFARSSRLIPDKANLGFRFPCDGPGRG
GTCQVSAWDHVFLGLFWMYNSISVVIFHFSWKMQSDVWGSINDQGVVTHI
TGGNFAQSSITINGWLRDFLWAQASQVIQSYGSSLSAYGLFFLGAHFVWA
FSLMFLFSGRGYWQELIESIVWAHNKLKVAPATQPRALSIVQGRAVGVTH
YLLGGIATTWAFFLARIIAVG

3D structure

• PDB: 4rku Crystal structure of plant Photosystem I at 3.1 Angstrom resolution
• Chain: A
• Resolution: 3.0 Å

Enzymatic activity

• Enzyme Commision number: 1.97.1.12: photosystem I.

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	PQN	A	M691 F692 R697 W700 A724 L725	M654 F655 R660 W663 A687 L688
BS02	CLA	A	I54 L57 H58	I17 L20 H21
BS03	CLA	A	A61 H62 I88	A24 H25 I51
BS04	CLA	A	H62 F64 V78 A81 H82 Q85 L86 I89 L93 W354 H355 L358 N361 L362	H25 F27 V41 A44 H45 Q48 L49 I52 L56 W317 H318 L321 N324 L325
BS05	CLA	A	H62 Q85 I88 I89 W92 L406	H25 Q48 I51 I52 W55 L369
BS06	CLA	A	L91 S94 G95 F98 H99 F103 W124	L54 S57 G58 F61 H62 F66 W87
BS07	CLA	A	W92 M96 Q121 I145 T146 S147 A674 Y675	W55 M59 Q84 I108 T109 S110 A637 Y638
BS08	CLA	A	W124 V127 Q129	W87 V90 Q92
BS09	CLA	A	F83 F184 H185 A189 W195	F46 F147 H148 A152 W158
BS10	CLA	A	H39 K77 S80 L179 G182 W183 Y186 H187	H2 K40 S43 L142 G145 W146 Y149 H150
BS11	CLA	A	W195 H205 W321	W158 H168 W284
BS12	CLA	A	F79 H82 F83 M178 M202 H205 H206	F42 H45 F46 M141 M165 H168 H169
BS13	CLA	A	Q163 T167 S217 W218 H221 V225	Q126 T130 S180 W181 H184 V188
BS14	CLA	A	R220 H224 I249 L250 F262	R183 H187 I212 L213 F225
BS15	CLA	A	L244 H246	L207 H209
BS16	CLA	A	W274 H301 L304 A305 I308	W237 H264 L267 A268 I271
BS17	CLA	A	F283 L294 D298 H301 H302 A305 L309 H375 M379 T511	F246 L257 D261 H264 H265 A268 L272 H338 M342 T474
BS18	CLA	A	L211 G214 S215 W218 H302 H303 I306 F310 L368 V372 M376 P381 Y382	L174 G177 S178 W181 H265 H266 I269 F273 L331 V335 M339 P344 Y345
BS19	CLA	A	H205 A208 G209 L311 H315 T319 W321 I323	H168 A171 G172 L274 H278 T282 W284 I286
BS20	CLA	A	L207 L211 F310 A313 M316 Y317 I327	L170 L174 F273 A276 M279 Y280 I290
BS21	CLA	A	I330 H334	I293 H297
BS22	CLA	A	I312 H315 I323 G324 H325	I275 H278 I286 G287 H288
BS23	CLA	A	L331 H334 H343	L294 H297 H306
BS24	CLA	A	F196 V199 M202 L203 H206 I327 L350 T351 W354 Q357 I360 N361	F159 V162 M165 L166 H169 I290 L313 T314 W317 Q320 I323 N324
BS25	CLA	A	I370 V371 Q374 I407 I549 T552 S608	I333 V334 Q337 I370 I512 T515 S571
BS26	CLA	A	M364 Q374 H375 S378 T511 S512 W515	M327 Q337 H338 S341 T474 S475 W478
BS27	CLA	A	W92 T146 S147 S394 T397 H398 W401 I743 W747	W55 T109 S110 S357 T360 H361 W364 I706 W710
BS28	CLA	A	F149 I152 L368 T369 M376 Y382 L395 H398 H399 I402	F112 I115 L331 T332 M339 Y345 L358 H361 H362 I365
BS29	CLA	A	A59 H62 D63 L358 L362 F405 G409 H413 R578 W595	A22 H25 D26 L321 L325 F368 G372 H376 R541 W558
BS30	CLA	A	F338 R434 H438 I442 H445	F301 R397 H401 I405 H408
BS31	CLA	A	H445 W448	H408 W411
BS32	CLA	A	W448 I451 F452 H456	W411 I414 F415 H419
BS33	CLA	A	F455 G459 L460 I462 H463 M467 R472 D475	F418 G422 L423 I425 H426 M430 R435 D438
BS34	CLA	A	I492 T503 W515	I455 T466 W478
BS35	CLA	A	T503 P505 G506	T466 P468 G469
BS36	CLA	A	Y377 F488 A489 I492 Q493 H542 H545 V612 H615	Y340 F451 A452 I455 Q456 H505 H508 V575 H578
BS37	CLA	A	F452 L453 P486 F488 A489 F539 H542 H543 H550	F415 L416 P449 F451 A452 F502 H505 H506 H513
BS38	CLA	A	L446 V449 H550 V553	L409 V412 H513 V516
BS39	CLA	A	I707 H711	I670 H674
BS40	CLA	A	T51 I54 H711 P718 P722	T14 I17 H674 P681 P685
BS41	CLA	A	F688 L725 V733 T736 H737	F651 L688 V696 T699 H700
BS42	CLA	A	K335 P337	K298 P300
BS43	SF4	A	C581 G583 P584 C590 I727	C544 G546 P547 C553 I690
BS44	CL0	A	I544 Y606 N607 F614 W652 L657 H683 W686 T746 F749	I507 Y569 N570 F577 W615 L620 H646 W649 T709 F712
BS45	CLA	A	L680 G681 H683 F684 A687	L643 G644 H646 F647 A650
BS46	CLA	A	F684 A687 F688 L690 M691 Y699 W700	F647 A650 F651 L653 M654 Y662 W663
BS47	CLA	A	T466 A469 L470	T429 A432 L433
BS48	CLA	A	N447 W448 I451	N410 W411 I414
BS49	CLA	A	L653 L657 W658	L616 L620 W621
BS50	CLA	A	F458 I462 F547 F603 W604 N607 I649 Y738	F421 I425 F510 F566 W567 N570 I612 Y701
BS51	CLA	A	C450 I451 G454 F455 F547 I555 F603 W604	C413 I414 G417 F418 F510 I518 F566 W567
BS52	CLA	A	G265 A266	G228 A229

Gene Ontology

Molecular Function

• GO:0000287 magnesium ion binding
• GO:0009055 electron transfer activity
• GO:0016168 chlorophyll binding
• GO:0016491 oxidoreductase activity
• GO:0046872 metal ion binding
• GO:0051539 4 iron, 4 sulfur cluster binding

Biological Process

• GO:0015979 photosynthesis

Cellular Component

• GO:0009507 chloroplast
• GO:0009522 photosystem I
• GO:0009535 chloroplast thylakoid membrane
• GO:0009579 thylakoid
• GO:0016020 membrane

External links

• PDB: RCSB:4rku, PDBe:4rku, PDBj:4rku
• PDBsum: 4rku
• UniProt: P05310|PSAA_PEA Photosystem I P700 chlorophyll a apoprotein A1 (Gene Name=psaA)