Structure of PDB 6k61 Chain B

Receptor sequence
>6k61B (length=740) Species: 103690 (Nostoc sp. PCC 7120 = FACHB-418) [Search protein sequence]
ATKFPKFSQDLAQDPTTRRIWYAMAMGNDFESHDGMTEENLYQKIFATHF
GHLAIIFLWASSLLFHVAWQGNFEQWIKDPLHVRPIAHAIWDPHFGKPAI
EAFTQAGANGPVNIAYSGVYHWWYTIGMRTNTELYTGSVFLLLFASLFLF
AGWLHLQPKFRPSLAWFKSAESRLNHHLAGLFGVSSLAWAGHLIHVAIPE
SRGQHVGWDNFLSTAPHPAGLQPFFTGNWGVYAQNPDTAGHIFSTSQGAG
TAILTFLGGFHPQTESLWLTDMAHHHLAIAVLFIVAGHMYRTNFGIGHSI
KEMMNAKTFFGKPVEGPFNMPHQGIYDTYNNSLHFQLGWHLACLGVVTSW
VAQHMYSLPSYAFIAKDYTTQAALYTHHQYIAIFLMVGAFAHGAIFLVRD
YDPEQNKGNVLERVLQHKEAIISHLSWVSLFLGFHTLGLYVHNDVVVAFG
TPEKQILIEPVFAQFIQAAHGKVLYGLDTLLSNPDSVAYTAYPNYANVWL
PGWLDAINSGTNSLFLTIGPGDFLVHHAIALGLHTTTLILVKGALDARGS
KLMPDKKDFGYAFPCDGPGRGGTCDISAWDSFYLSLFWALNTVGWVTFYW
HWKHLGIWQGNVAQFNENSTYLMGWFRDYLWANSAQLINGYNPYGVNNLS
VWAWMFLFGHLVWATGFMFLISWRGYWQELIETLVWAHERTPIANLVRWK
DKPVALSIVQARVVGLAHFTVGYVLTYAAFLIASTAGKFG
3D structure
PDB6k61 Structural and functional insights into the tetrameric photosystem I from heterocyst-forming cyanobacteria.
ChainB
Resolution2.37 Å
3D
structure
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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 CL0 B F627 W632 F626 W631
BS02 CLA B W655 L658 F659 H661 L662 W664 A665 W654 L657 F658 H660 L661 W663 A664
BS03 CLA B V446 F450 V445 F449
BS04 CLA B T692 P693 T691 P692
BS05 CLA B L685 A688 H689 V698 L684 A687 H688 V697
BS06 SF4 B C566 G568 C575 W674 C565 G567 C574 W673
BS07 CLA B S430 L431 G434 F435 L539 I540 L585 W589 S429 L430 G433 F434 L538 I539 L584 W588
BS08 CLA B S424 S427 W428 S423 S426 W427
BS09 CLA B D445 W589 N592 W596 F627 D444 W588 N591 W595 F626
BS10 CLA B Y441 W596 F599 W626 S635 F657 H661 W664 Y724 T727 Y728 F731 Y440 W595 F598 W625 S634 F656 H660 W663 Y723 T726 Y727 F730
BS11 CLA B A665 T666 F668 M669 Y677 W678 A664 T665 F667 M668 Y676 W677
BS12 CLA B F8 A24 G28 N29 F31 K45 F7 A23 G27 N28 F30 K44
BS13 CLA B N29 F31 I46 H50 H53 L334 Q337 L338 H341 L345 N28 F30 I45 H49 H52 L333 Q336 L337 H340 L344
BS14 CLA B N29 H53 I57 W60 N28 H52 I56 W59
BS15 CLA B S63 F66 H67 W70 Q71 S62 F65 H66 W69 Q70
BS16 CLA B L64 A88 H89 N114 Y117 S118 V652 W653 M656 L63 A87 H88 N113 Y116 S117 V651 W652 M655
BS17 CLA B I91 W92 D93 H95 F96 N114 V652 W655 I90 W91 D92 H94 F95 N113 V651 W654
BS18 CLA B F47 F51 A152 H156 F161 P163 W167 F46 F50 A151 H155 F160 P162 W166
BS19 CLA B W167 S173 H177 W166 S172 H176
BS20 CLA B F47 H50 F51 W123 W167 S170 S173 R174 H177 H178 L182 F183 F46 H49 F50 W122 W166 S169 S172 R173 H176 H177 L181 F182
BS21 CLA B G128 M129 F141 A189 W190 H193 H196 V197 G208 W209 F212 G127 M128 F140 A188 W189 H192 H195 V196 G207 W208 F211
BS22 CLA B L188 A189 I195 H196 A216 P217 L222 L187 A188 I194 H195 A215 P216 L221
BS23 CLA B W230 L255 H275 L278 A279 V282 W229 L254 H274 L277 A278 V281
BS24 CLA B F257 L268 D272 H275 H276 I280 H355 W500 W504 F256 L267 D271 H274 H275 I279 H354 W499 W503
BS25 CLA B W123 S186 S187 W190 M273 H276 H277 W351 V352 S361 Y362 W122 S185 S186 W189 M272 H275 H276 W350 V351 S360 Y361
BS26 CLA B L179 F284 A287 M290 Y291 I301 L178 F283 A286 M289 Y290 I300
BS27 CLA B H177 A180 H289 T293 F295 H176 A179 H288 T292 F294
BS28 CLA B V286 H289 M290 I297 G298 H299 V285 H288 M289 I296 G297 H298
BS29 CLA B H299 M304 A307 T309 F310 F311 G317 F319 H298 M303 A306 T308 F309 F310 G316 F318
BS30 CLA B M305 P318 M321 H323 V411 L412 M304 P317 M320 H322 V410 L411
BS31 CLA B A171 R174 L175 H178 F183 Y327 Y330 W340 H341 C344 V348 A170 R173 L174 H177 F182 Y326 Y329 W339 H340 C343 V347
BS32 CLA B S350 W351 Q354 Q380 I384 M387 F391 L534 T538 S349 W350 Q353 Q379 I383 M386 F390 L533 T537
BS33 CLA B W340 C344 V347 W351 Q354 H355 S358 L359 F516 W339 C343 V346 W350 Q353 H354 S357 L358 F515
BS34 CLA B W60 L64 A374 T377 H378 Y381 I382 V725 L726 A729 W59 L63 A373 T376 H377 Y380 I381 V724 L725 A728
BS35 CLA B W60 S118 G119 W123 V352 M356 Y362 L375 H378 H379 W59 S117 G118 W122 V351 M355 Y361 L374 H377 H378
BS36 CLA B A26 N29 D30 L338 L342 F385 G389 H393 I396 R400 Y562 W580 F583 V722 A25 N28 D29 L337 L341 F384 G388 H392 I395 R399 Y561 W579 F582 V721
BS37 CLA B M321 R414 H418 H425 M320 R413 H417 H424
BS38 CLA B H425 W428 H424 W427
BS39 CLA B G439 V442 H443 K455 I457 G438 V441 H442 K454 I456
BS40 CLA B I467 H471 L481 L482 W504 I466 H470 L480 L481 W503
BS41 CLA B V488 A489 A492 N495 A497 N498 W500 V487 A488 A491 N494 A496 N497 W499
BS42 CLA B A464 I467 Q468 L517 H527 I530 V597 Y600 W601 A463 I466 Q467 L516 H526 I529 V596 Y599 W600
BS43 CLA B F432 L433 P461 F463 A464 F524 H527 H528 F431 L432 P460 F462 A463 F523 H526 H527
BS44 CLA B L426 V429 A531 H535 L425 V428 A530 H534
BS45 CLA B T18 W22 H689 R699 W700 K701 P704 T17 W21 H688 R698 W699 K700 P703
BS46 CLA B F659 L662 T666 F670 V715 A718 H719 F658 L661 T665 F669 V714 A717 H718
BS47 PQN B M669 F670 S673 W674 R675 W678 A706 L707 A712 M668 F669 S672 W673 R674 W677 A705 L706 A711
BS48 CLA B W428 L431 F432 F435 H436 W427 L430 F431 F434 H435
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:0009522 photosystem I
GO:0009579 thylakoid
GO:0016020 membrane
GO:0031676 plasma membrane-derived thylakoid membrane
GO:0042651 thylakoid membrane

View graph for
Molecular Function
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Biological Process
View graph for
Cellular Component
External links
PDB RCSB:6k61, PDBe:6k61, PDBj:6k61
PDBsum6k61
PubMed31595062
UniProtP58565|PSAB1_NOSS1 Photosystem I P700 chlorophyll a apoprotein A2 1 (Gene Name=psaB1)

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