Structure of PDB 5mgp Chain Q Binding Site BS01

Receptor Information

>5mgp Chain Q (length=117) Species: 562 (Escherichia coli)

ARVKRGVIARARHKKILKQAKGYYGARSRVYRVAFQAVIKAGQYAYRDRR
QRKRQFRQLWIARINAAARQNGISYSKFINGLKKASVEIDRKILADIAVF
DKVAFTALVEKAKAALA

Ligand information

>5mgp Chain A (length=2900)

gguuaagcgacuaagcguacacgguggaugcccuggcagucagaggcgau
gaaggacgugcuaaucugcgauaagcgucgguaaggugauaugaaccguu
auaaccggcgauuuccgaauggggaaacccaguguguuucgacacacuau
cauuaacugaauccauagguuaaugaggcgaaccgggggaacugaaacau
cuaaguaccccgaggaaaagaaaucaaccgagauucccccaguagcggcg
agcgaacggggagcagcccagagccugaaucaguguguguguuaguggaa
gcgucuggaaaggcgcgcgauacagggugacagccccguacacaaaaaug
cacaugcugugagcucgaugaguagggcgggacacgugguauccugucug
aauauggggggaccauccuccaaggcuaaauacuccugacugaccgauag
ugaaccaguaccgugagggaaaggcgaaaagaaccccggcgaggggagug
aaaaagaaccugaaaccguguacguacaagcagugggagcacgcuuaggc
gugugacugcguaccuuuuguauaaugggucagcgacuuauauucuguag
caagguuaaccgaauaggggagccgaagggaaaccgagucuuaacugggc
guuaaguugcaggguauagacccgaaacccggugaucuagccaugggcag
guugaagguuggguaacacuaacuggaggaccgaaccgacuaaugucgaa
aaauuagcggaugacuuguggcugggggugaaaggccaaucaaaccggga
gauagcugguucuccccgaaagcuauuuagguagcgccucgugaauucau
cuccggggguagagcacuguuucggcaagggggucacgacuuaccaaccc
gaugcaaacugcgaauaccggagaauguuaucacgggagacacacggcgg
gugcuaacguccgucgugaagagggaaacaacccagaccgccagcuaagg
ucccaaagucaugguuaagugggaaacgaugugggaaggcccagacagcc
aggauguuggcuuagaagcagccaucauuuaaagaaagcguaauagcuca
cuggucgagucggccugcgcggaagauguaacggggcuaaaccaugcacc
gaagcugcggcagcgacgcuuaugcguuguuggguaggggagcguucugu
aagccugcgaaggugugcugugaggcaugcuggagguaucagaagugcga
augcugacauaaguaacgauaaagcgggugaaaagcccgcucgccggaag
accaaggguuccuguccaacguuaaucggggcagggugagucgaccccua
aggcgaggccgaaaggcguagucgaugggaaacagguuaauauuccugua
cuugguguuacugcgaaggggggacggagaaggcuauguuggccgggcga
cgguugucccgguuuaagcguguaggcugguuuuccaggcaaauccggaa
aaucaaggcugaggcgugaugacgaggcacuacggugcugaagcaacaaa
ugcccugcuuccaggaaaagccucuaagcaucagguaacaucaaaucgua
ccccaaaccgacacagguggucagguagagaauaccaaggcgcuugagag
aacucgggugaaggaacuaggcaaaauggugccguaacuucgggagaagg
cacgcugauauguaggugaggucccucgcggauggagcugaaaucagucg
aagauaccagcuggcugcaacuguuuauuaaaaacacagcacugugcaaa
cacgaaaguggacguauacggugugacgccugcccggugccgggagguua
auugaugggguuagcgcaagcgaagcucuugaucgaagccccgguaaacg
gcggccguaacuauaacgguccuaagguagcgaaauuccuugucggguaa
guuccgaccugcacgaauggcguaaugauggccaggcugucuccacccga
gacucagugaaauugaacucgcugugaagaugcaguguacccgcggcaag
acggaaagaccccguaaaccuuuacuauagcuugacacugaacauugagc
cuugauguguaggauaggugggaggcuuugaaguguggacgccagucugc
auggagccgaccuugaaauaccacccuuuaauguuugauguucuaacguu
gacccguaauccggguugcggacagugucugguggguaguuugacugggg
cggucuccuccuaaagaguaacggaggagcacgaagguuggcuaauccug
gucggacaucaggagguuagugcaauggcauaagccagcuugacugcgag
cgugacggcgcgagcaggugcgaaagcaggucauagugauccggugguuc
ugaauggaagggccaucgcucaacggauaaaagguacuccggggauaaca
ggcugauaccgcccaagaguucauaucgacggcgguguuuggcaccucga
ugucggcucaucacauccuggggcugaaguaggucccaaggguauggcug
uucgccauuuaaagugguacgcgagcuggguuuagaacgucgugagacag
uucggucccuaucugccgugggcgcuggagaacugaggggggcugcuccu
aguacgagaggaccggaguggacgcaucacugguguucggguugucaugc
caauggcacugcccgguagcuaaaugcggaagagauaagugcugaaagca
ucuaagcacgaaacuugccccgagaugaguucucccugacccuuuaaggg
uccugaaggaacguugaagacgacgacguugauaggccggguguguaagc
gcagcgaugcguugagcuaaccgguacuaaugaaccgugaggcuuaaccu

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

Receptor-Ligand Complex Structure

Structure summary

• PDB: 5mgp Structural basis for ArfA-RF2-mediated translation termination on mRNAs lacking stop codons.
• Resolution: 3.1 Å
• Binding residue (original residue number in PDB): A1 R2 V3 K4 R5 G6 V7 R10 R12 H13 K14 K15 K21 G22 Y23 Y24 G25 A26 R27 S28 R29 V30 Y31 R32 F35 Q36 K40 Y44 Y46 R47 D48 R49 R50 Q51 R52 K53 R54 Q55 F56 R57 Q58 W60 I61 N65 R69 S74 Y75 S76 I79 N80 D90 R91 K92
• Binding residue (residue number reindexed from 1): A1 R2 V3 K4 R5 G6 V7 R10 R12 H13 K14 K15 K21 G22 Y23 Y24 G25 A26 R27 S28 R29 V30 Y31 R32 F35 Q36 K40 Y44 Y46 R47 D48 R49 R50 Q51 R52 K53 R54 Q55 F56 R57 Q58 W60 I61 N65 R69 S74 Y75 S76 I79 N80 D90 R91 K92

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:5mgp, PDBe:5mgp, PDBj:5mgp
• PDBsum: 5mgp
• PubMed: 27906161
• UniProt: P0A7L3|RL20_ECOLI Large ribosomal subunit protein bL20 (Gene Name=rplT)