Structure of PDB 7blz Chain A

Receptor sequence

>7blzA (length=743) Species: 280699 (Cyanidioschyzon merolae strain 10D)

EKQVKVVVDRDVVPTSFEKWAKPGHFSRSLAKGPKTTTWIWNLHADAHDF
DSHTSSLEEVSRKIFSAHFGQLAIIFIWLSGMYFHGARFSNYVAWLSNPT
GIKPSAQVVWPIVGQQILNADVGGGMQGIQITSGLFQLWRASGIVNELQL
YVTALGGLGMAGLMIFAGWFHYHKAAPKLEWFQNVESMLNHHLAGLLGLG
SLSWAGHQIHVSLPINKLLDAGVAPSSIPLPHEFILNRNLMAELYPSFQQ
GLVPFFTLNWKQYSDILTFKGGLSPVTGGLWLTDVAHHHLAIAVLFLVAG
HMYRTNWGIGHSIKQILEAHKGPLTGEGHKGLYEILTTSWHANLAINLAM
LGSLSIIVAHHMYAMPPYPYLATDYPTQLSLFTHHMWIGGFCIVGAGAHA
AIYMVRDYSPTVNFNNVLDRMIRHRDAIISHLNWVCIFLGMHSFGLYIHN
DTMRALGRAQDMFSDTAIQLQPVFAQWIQQIHTLAPGNTAVNALATASYA
FGADTVTVGSKIAMMPIKLGTADFMVHHIHAFTIHVTTLILLKGVLYARN
SRLIPDKANLGFRFPCDGPGRGGTCQVSAWDHVFLGLFWMYNALSIVIFH
FSWKMQSDVWGTVTSNGAISHITGGNFAQSAITINGWLRDFLWAQASQVI
QSYGSSLSAYGLMFLGAHFVWAFSLMFLFSGRGYWQELIESIVWAHNKLK
VAPAIAPRALSITQGRAVGVAHYLLGGIATTWAFFLARIIAVG

3D structure

• PDB: 7blz Red alga C.merolae Photosystem I
• Chain: A
• Resolution: 3.1 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	CLA	A	G167 L168	G162 L163
BS02	CL0	A	I534 F537 Y596 N597 I601 F604 I639 W642 L647 A651 I655 F669 H673 W676 Y728 T735 F739	I529 F532 Y591 N592 I596 F599 I634 W637 L642 A646 I650 F664 H668 W671 Y723 T730 F734
BS03	CLA	A	W44 I45 W46 H49	W39 I40 W41 H44
BS04	CLA	A	W25 A52 H53 I79	W20 A47 H48 I74
BS05	CLA	A	H53 F55 I69 H73 Q76 L77 I80 F81 L84 W345 H346 L349 N352 L353	H48 F50 I64 H68 Q71 L72 I75 F76 L79 W340 H341 L344 N347 L348
BS06	CLA	A	H53 Q76 W83 I393	H48 Q71 W78 I388
BS07	CLA	A	W83 G86 F89 H90 F94 W115	W78 G81 F84 H85 F89 W110
BS08	CLA	A	M87 Q112 I136 S138 Y665	M82 Q107 I131 S133 Y660
BS09	CLA	A	V114 W115 Q120	V109 W110 Q115
BS10	CLA	A	V11 V13 R15 F70 F74 L168 A172 F175 H176 W186	V6 V8 R10 F65 F69 L163 A167 F170 H171 W181
BS11	CLA	A	T20 S21 W25 H30 K68 I170 G173 W174 Y177 H178	T15 S16 W20 H25 K63 I165 G168 W169 Y172 H173
BS12	CLA	A	Q8 V9 K10 V11 W186 H196	Q3 V4 K5 V6 W181 H191
BS13	CLA	A	H73 F74 L77 W186 F187 M193 H196 H197 L201	H68 F69 L72 W181 F182 M188 H191 H192 L196
BS14	CLA	A	G148 I149 Q154 T158 S208 W209 H212 V216 P236	G143 I144 Q149 T153 S203 W204 H207 V211 P231
BS15	CLA	A	L207 G211 I214 H215 I240 R243 F253 Q255 G256 L257 V258 L272 L295	L202 G206 I209 H210 I235 R238 F248 Q250 G251 L252 V253 L267 L290
BS16	CLA	A	L153 V157 L235 H237 L241	L148 V152 L230 H232 L236
BS17	CLA	A	W265 L272 F274 H292 L295 A296 V299 N497	W260 L267 F269 H287 L290 A291 V294 N492
BS18	CLA	A	F274 G276 L285 D289 H292 H293 I297 H366 M370 A502	F269 G271 L280 D284 H287 H288 I292 H361 M365 A497
BS19	CLA	A	L202 G205 S206 W209 H293 H294 I297 L359 V363 H366 P372 Y373	L197 G200 S201 W204 H288 H289 I292 L354 V358 H361 P367 Y368
BS20	CLA	A	H196 A199 L204 L302 H306 T310 W312 I314	H191 A194 L199 L297 H301 T305 W307 I309
BS21	CLA	A	L194 L198 F301 A304 M307 Y308 M355 L547	L189 L193 F296 A299 M302 Y303 M350 L542
BS22	CLA	A	V303 M307 G315 H316	V298 M302 G310 H311
BS23	CLA	A	H316 Q320 I321 A324 H325	H311 Q315 I316 A319 H320
BS24	CLA	A	H325 H334 V422 L423	H320 H329 V417 L418
BS25	CLA	A	V190 M193 L194 H197 I318 L341 T342 T343 S344 W345 N348 I351 N352 M355	V185 M188 L189 H192 I313 L336 T337 T338 S339 W340 N343 I346 N347 M350
BS26	CLA	A	I361 H365 G395 I398 I539 T542 T543	I356 H360 G390 I393 I534 T537 T538
BS27	CLA	A	M355 L359 I362 H366 A369 M370 S503 F506	M350 L354 I357 H361 A364 M365 S498 F501
BS28	CLA	A	W83 S138 S385 T388 H389 W392 I393 M668 I733 W737	W78 S133 S380 T383 H384 W387 I388 M663 I728 W732
BS29	CLA	A	L143 L359 S360 V363 M367 Y373 L386 H389 H390 I393	L138 L354 S355 V358 M362 Y368 L381 H384 H385 I388
BS30	CLA	A	A50 H53 L353 F396 G400 H404 F567 R568 W585	A45 H48 L348 F391 G395 H399 F562 R563 W580
BS31	CLA	A	L329 T330 V422 R425 M426 H429 H436	L324 T325 V417 R420 M421 H424 H431
BS32	CLA	A	W439 I442 F443 H447	W434 I437 F438 H442
BS33	CLA	A	M446 G450 I453 H454 M458 R463 F468	M441 G445 I448 H449 M453 R458 F463
BS34	CLA	A	W482 H487 A490 T494	W477 H482 A485 T489
BS35	CLA	A	T494 V496 N497	T489 V491 N492
BS36	CLA	A	Y368 F479 A480 I483 Q484 I522 H532 H535 V602 H605 F606	Y363 F474 A475 I478 Q479 I517 H527 H530 V597 H600 F601
BS37	CLA	A	F443 L444 P477 F479 A480 F529 H532 H533	F438 L439 P472 F474 A475 F524 H527 H528
BS38	CLA	A	L437 V440 H540	L432 V435 H535
BS39	CLA	A	W46 F678 L715 V723 H727	W41 F673 L710 V718 H722
BS40	CLA	A	W439 I442	W434 I437
BS41	PQN	A	M681 F682 S685 R687 W690 A714 L715	M676 F677 S680 R682 W685 A709 L710
BS42	C7Z	A	T158 G162 S208	T153 G157 S203
BS43	RRX	A	G671 F674 L730 A734 W737	G666 F669 L725 A729 W732
BS44	SF4	A	C571 G573 C580	C566 G568 C575
BS45	T7X	A	F443 H447 I473 H533	F438 H442 I468 H528
BS46	CLA	A	F674 A677 F678 L680 M681 F684 Y689 W690	F669 A672 F673 L675 M676 F679 Y684 W685
BS47	CLA	A	F449 I453 D456 F537 W594 I639 W676 Y728	F444 I448 D451 F532 W589 I634 W671 Y723
BS48	CLA	A	I697 H701	I692 H696
BS49	CLA	A	N438 C441 I442 M446 F537 I545 F593 W594	N433 C436 I437 M441 F532 I540 F588 W589
BS50	CLA	A	W699 K703 L704	W694 K698 L699
BS51	CLA	A	L670 G671 H673 F674 A677	L665 G666 H668 F669 A672
BS52	CLA	A	L643 L647 W648	L638 L642 W643
BS53	CLA	A	T457 A460 L461	T452 A455 L456
BS54	CLA	A	T42 I45 W46 I697 H701 P708 P712	T37 I40 W41 I692 H696 P703 P707
BS55	C7Z	A	W115 I117	W110 I112
BS56	CLA	A	F260 L263	F255 L258
BS57	CLA	A	H436 W439	H431 W434
BS58	CLA	A	K326 P328 L329	K321 P323 L324

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:7blz, PDBe:7blz, PDBj:7blz
• PDBsum: 7blz
• UniProt: Q85FY7|PSAA_CYAM1 Photosystem I P700 chlorophyll a apoprotein A1 (Gene Name=psaA)