Structure of PDB 5aka Chain Q Binding Site BS01

Receptor Information

>5aka Chain Q (length=117) Species: 83333 (Escherichia coli K-12)

ARVKRGVIARARHKKILKQAKGYYGARSRVYRVAFQAVIKAGQYAYRDRR
QRKRQFRQLWIARINAAARQNGISYSKFINGLKKASVEIDRKILADIAVF
DKVAFTALVEKAKAALA

Ligand information

>5aka Chain B (length=2841)

gguuaagcgacuaagcguacacgguggaugcccuggcagucagaggcgau
gaaggacgugcuaaucugcgauaagcgucgguaaggugauaugaaccguu
auaaccggcgauuuccgaauggggaaacccaguguguuucgacacacuau
cauuaacugaauccauagguuaaugaggcgaaccgggggaacugaaacau
cuaaguaccccgaggaaaagaaaucaaccgagauucccccaguagcggcg
agcgaacggggagcagcccagagccugaaucaguguguguguuaguggaa
gcgucuggaaaggcgcgcgauacagggugacagccccguacacaaaaaug
cacaugcugugagcucgaugaguagggcgggacacgugguauccugucug
aauauggggggaccauccuccaaggcuaaauacuccugacugaccgauag
ugaaccaguaccgugagggaaaggcgaaaagaaccccggcgaggggagug
aaaaagaaccugaaaccguguacguacaagcagugggagcacgcuuaggc
gugugacugcguaccuuuuguauaaugggucagcgacuuauauucuguag
caagguuaaccgaauaggggagccgaagggaaaccgagucuuaacugggc
guuaaguugcaggguauagacccgaaacccggugaucuagccaugggcag
guugaagguuggguaacacuaacuggaggaccgaaccgacuaauguugaa
aaauuagcggaugacuuguggcugggggugaaaggccaaucaaaccggga
gauagcugguucuccccgaaagcuauuuagguagcgccucgugaauucau
cuccggggguagagcacuguuucggcaacaacccgaugcaaacugcgaau
accggagaauguuaucacgggagacacacggcgggugcuaacguccgucg
ugaagagggaaacaacccagaccgccagcuaaggucccaaagucaugguu
aagugggaaacgaugugggaaggcccagacagccaggauguuggcuuaga
agcagccaucauuuaaagaaagcguaauagcucacuggucgagucggccu
gcgcggaagauguaacggggcuaaaccaugcaccgaagcugcggcagcga
cgcuuaugcguuguuggguaggggagcguucuguaagccugcgaaggugu
gcugugaggcaugcuggagguaucagaagugcgaaugcugacauaaguaa
cgauaaagcgggugaaaagcccgcucgccggaagaccaaggguuccuguc
caacguuaaucggggcagggugagucgaccccuaaggcgaggccgaaagg
cguagucgaugggaaacagguuaauauuccuguacuugguguuacugcga
aggggggacggagaaggcuauguuggccgggcgacgguugucccgguuua
agcguguaggcugguuuuccaggcaaauccggaaaaucaaggcugaggcg
ugaugacgaggcacuacggugcugaagcaacaaaugcccugcuuccagga
aaagccucuaagcaucagguaacaucaaaucguaccccaaaccgacacag
guggucagguagagaauaccaaggcgcuugagagaacucgggugaaggaa
cuaggcaaaauggugccguaacuucgggagaaggcacgcugauauguagg
ugaggucccucgcggauggagcugaaaucagucgaagauaccagcuggcu
gcaacuguuuauuaaaaacacagcacugugcaaacacgaaaguggacgua
uacggugugacgccugcccggugccggaagguuaauugaugggguuagcg
caagcgaagcucuugaucgaagccccgguaaacggcggccguaacuauaa
cgguccuaagguagcgaaauuccuugucggguaaguuccgaccugcacga
auggcguaaugauggccaggcugucuccacccgagacucagugaaauuga
acucgcugugaagaugcaguguacccgcggcaagacggaaagaccccgug
aaccuuuacuauagcuugacacugaacauugagccuugauggaagugugg
acgccagucugcauggcuuuaauguuugauguucuaacguugacccguaa
uccggguugcggacagugucugguggguaguuugacuggggcggucuccu
ccuaaagaguaacggaggagcacgaagguuggcuaauccuggucggacau
caggagguuagugcaauggcauaagccagcuugacugcgagcgugacggc
gcgagcaggugcgaaagcaggucauagugauccggugguucugaauggaa
gggccaucgcucaacggauaaaagguacuccggggauaacaggcugauac
cgcccaagaguucauaucgacggcgguguuuggcaccucgaugucggcuc
aucacauccuggggcugaaguaggucccaaggguauggcuguucgccauu
uaaagugguacgcgagcuggguuuagaacgucgugagacaguucgguccc
uaucugccgugggcgcuggagaacugaggggggcugcuccuaguacgaga
ggaccggaguggacgcaucacugguguucggguugucaugccaauggcac
ugcccgguagcuaaaugcggaagagauaagugcugaaagcaucuaagcac
gaaacuugccccgagaugaguucucccugacccuuuaaggguccugaagg
aacguugaagacgacgacguugauaggccggguguguaagcgcagcgaug
cguugagcuaaccgguacuaaugaaccgugaggcuuaaccu

<<<<<<<<......<<<<<<<<<<<.....[[..[[<<<<<<<[[<<...
...<<<<<<.[..(((.>>>.....<<<<<<<..<<<)))..].>>>...
...>>>>>>>...>>>....<<<....>>><<<<<<<....>>>>>>>.<
<<<<<<<<.........>>>>>>>>>.>>...<<<<<<.....<<....>
>......>>>>>.>.........<<....>>..<<<<<<.....<<....
.>>....>>>>>>..(((....<......<.<<<..<<<<<...<<<...
.<<..........>>.(.......<<<......)>>>...>>>.....>>
>>>..>>>>....>..........<<<<<<<<.........>>>>>>>>.
.....<<<<<..<<<<>>>>>..)))......]].>>>>>>>.]].....
..........<<....>>....]].........<<<<.....>>>>....
..............>>>>>>>>>>>.......<<<<..<<<<<......>
>>>>..>>>>...<............>.<<<<<<....<<<<<<<<<<<<
<..<<<...<<.....>>...>>>...<<....>>..<<<<.....>>>>
.....>>>>>>>>>>>>>..<<.<...<<<<<<.....<<<<<<<<<..<
<<....<<<<<<......>>>>>>.....>>>...<<<.<<<<<......
..>>>>>>>>....>>>>>>>>>...<<<.....>>>......>>>>>>.
.....>.>>..<<<<<<....<<<<<....>>>>>.<<<<<<<<...<<<
<<<<<<.<...<<<...<<<.<<<<.......>>>>.>>>..>>.>...>
.>>>>>>.>>>...>>>>>>>.>...<<<<<<<<<<......>>>>>>>>
>>....<<<......>>>...<<<<.<<<...<<<(((.....<<<<<<.
..........<<..<<<<<............<<<<<.<<...<<<<....
...>>>>...>>........<<<......>>>..>>>>>........>>>
>>.>>...........))).....>>>>>>.>>>...>>>>>>><<<<<<
<<<....>>>>>>>>>....>>>>>><.<<<<<...<<<......<<<<<
<<<....>>>>>>>>...>>>..>>>>>..>.....>>>>>><......<
<.....<<<<<<.......>>>>>><<<<....<<<<<.<<...<<<<<<
...<<.....>>.>>>>>>....((<<<.<<<...<<<...<<<....>>
>...>>>...>>>..<<<<<........>>>>>))<<<<<<<<<<<<<..
.<<<<....<<<<..<<<..<<<<<<<<<<<....(((...>>>>>>...
.<<<....<<<<<<<<<<<<.<<.....>>>>>>>>>>..>>>>....>>
>........<<<........>>>....>>>>>...>>>...>>>>.....
....>>>>...>>....>>>>>>>>>>>.>>>..>>.....<<......>
>>>>>>.<<<<.....>>>>..>>>>..<<<<....<<<<<<<<.<<...
......<.....<<<<<...............>>>>><<<<<<.....<<
<...<<<<.....>>>>...>>>...>>>>>>............<<<<<<
<<<..<<<.........>>>..<<<<<<<.....<<<....>>>......
.>>>>>>>.<<<<<.<<<..<<<<<<<..<<<<.......<<<<<..<<.
...>>...>>>>>.......>>>>>>>>>..>>>>><<<<<<.......>
>>>>>........<...........<<<<<.......>>>>>.....>..
..>>>>>..>>.>>>>>>>..>..>>.>>>>>>>>.>>>>>>.....>..
...<<<<<........>>>>>..<<<<<<<<.(((.[[......<<<<.[
[<<<<..<<<<<.<<<.<<<<<.<<<<<<<<<<<.<<<<.....<<<<<<
<<....>>>>>>>>....>>>>.>>>>>>>>>>>...<<<.<<<<<<...
..>>>>>>>>>....>>>>>.>>>..>>>>>..<<<<.....>>>><<<<
<<...........>>>>>>..<<...<<<<<<<...<<<<<<.......>
>>>>>.....<<...(((>>....>>>>>>>...<<<<..<<<<....>>
>>..>>>>.<<<....>>>.>>))).......<<<<<<<.((..>>>>..
))>>>>>>>.............>>>>..]]>>>>.......<<<<...<<
<<<<...<<.......>>...>>>>>>....>>>.>.......<<<<<.<
<<<<<..<<<<<<<<<......>>>>>>>..>>.<<<<<.....>>>>>.
....>>>>>..>...>>>.>>....<<<<<<<....>>>.>>>>....]]
..)))>>>>>>>>....<<<<<<<...<<<<..<<<<<<<..........
.....>>>>>>>.<<<<<...<<<<...<<<<<<<<<<<))).>>>>>>.
.>>>>>...>>>>.>>>>>...<<<....<<<<<...........>>>>>
....>>>.>>>>.......>>>>>>>..<<<<<<...>>>>>>.....<<
..<<<<<.......>>>>>....<<<<<<<<..<<....<<<<<....>>
>>>...>>...>>>>>.>>>.....>>.....>>>>>>>>.

Receptor-Ligand Complex Structure

Structure summary

• PDB: 5aka Ribosome-Srp-Ftsy Cotranslational Targeting Complex in the Closed State.
• Resolution: 5.7 Å
• Binding residue (original residue number in PDB): A1 R2 V3 K4 R5 V7 I8 R10 R12 H13 K14 K15 A20 K21 G22 Y23 Y24 G25 A26 R27 R29 V30 Y31 R32 Q36 K40 A41 Y44 A45 Y46 R47 D48 R49 R50 R52 K53 R54 Q55 F56 R57 Q58 W60 I61 N65 S74 Y75 S76 N80 K83 R91 K92 I93
• Binding residue (residue number reindexed from 1): A1 R2 V3 K4 R5 V7 I8 R10 R12 H13 K14 K15 A20 K21 G22 Y23 Y24 G25 A26 R27 R29 V30 Y31 R32 Q36 K40 A41 Y44 A45 Y46 R47 D48 R49 R50 R52 K53 R54 Q55 F56 R57 Q58 W60 I61 N65 S74 Y75 S76 N80 K83 R91 K92 I93

Gene Ontology

Molecular Function

• GO:0000900 mRNA regulatory element binding translation repressor activity
• GO:0003729 mRNA binding
• GO:0003735 structural constituent of ribosome
• GO:0019843 rRNA binding
• GO:0070180 large ribosomal subunit rRNA binding

Biological Process

• GO:0000027 ribosomal large subunit assembly
• GO:0002181 cytoplasmic translation
• GO:0006412 translation
• GO:0017148 negative regulation of translation

Cellular Component

• GO:0005737 cytoplasm
• GO:0005829 cytosol
• GO:0005840 ribosome
• GO:0022625 cytosolic large ribosomal subunit
• GO:1990904 ribonucleoprotein complex

External links

• PDB: RCSB:5aka, PDBe:5aka, PDBj:5aka
• PDBsum: 5aka
• PubMed: 25775537
• UniProt: P0A7L3|RL20_ECOLI Large ribosomal subunit protein bL20 (Gene Name=rplT)