Structure of PDB 6xza Chain K1 Binding Site BS01

Receptor Information
>6xza Chain K1 (length=117) Species: 83333 (Escherichia coli K-12) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
RKQVSDGVAHIHASFNNTIVTITDRQGNALGWATAGGSGFRGSRKSTPFA
AQVAAERCADAVKEYGIKNLEVMVKGPGPGRESTIRALNAAGFRITNITD
VTPIPHNGCRPPKKRRV
Ligand information
>6xza Chain A1 (length=1523) [Search RNA sequence] [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
aaauugaagaguuugaucauggcucagauugaacgcuggcggcaggccua
acacaugcaagucgaacgguaacaggaagaagcuugcuucuuugcugacg
aguggcggacgggugaguaaugucugggaaacugccugauggagggggau
aacuacuggaaacgguagcuaauaccgcauaacgucgcaagaccaaagag
ggggaccuucgggccucuugccaucggaugugcccagaugggauuagcua
guaggugggguaacggcucaccuaggcgacgaucccuagcuggucugaga
ggaugaccagccacacuggaacugagacacgguccagacuccuacgggag
gcagcaguggggaauauugcacaaugggcgcaagccugaugcagccaugc
cgcguguaugaagaaggccuucggguuguaaaguacuuucagcggggagg
aagggaguaaaguuaauaccuuugcucauugacguuacccgcagaagaag
caccggcuaacuccggccagcagcccgguaauacggagggugcaagcguu
aaucggaauuacugggcguaaagcgcacgcaggcgguuuguuaagucaga
ugugaaauccccgggcucaaccugggaacugcaucugauacuggcaagcu
ugagucucguagagggggguagaauuccagguguagcggugaaaugcgua
gagaucuggaggaauaccgguggcgaaggcggcccccuggacgaagacug
acgcucaggugcgaaagcguggggagcaaacaggauuagauacccuggua
guccacgccguaaacgaugucgacuuggagguugugcccuugaggcgugg
cuuccggagcuaacgcguuaagucgaccgccuggggaguacggccgcaag
guuaaaacucaaaugaauugacgggggcccgcacaagcgguggagcaugu
gguuuaauucgauaacgcgaagaaccuuaccuggucuugacauccacgga
aguuuucagagaugagaaugugccuucgggaaccgugagacaggugcugc
auggcugucgucagcucguguugugaaauguuggguuaagucccgcaacg
agcgcaacccuuauccuuuguugccagcgguccggccgggaacucaaagg
agacugccagugauaaacuggaggaagguggggaugacgucaagucauca
ugcccuuacgaccagggcuacacacgugcuacaauggcgcauacaaagag
aagcgaccucgcgagagcaagcggaccucauaaagugcgucguaguccgg
auuggagucugcaacucgacuccaugaagucggaaucgcuaguaaucgug
gaucagaaugccacggugaauacguucccgggccuuguacacaccgccgu
acaccaugggaguggguugcaaaagaaguagguagcuuaaccuucgggag
ggcgcuuaccacuuugugauucaugacuggggugaagucgaacaagguaa
ccguagggccugcgguuggauca
........<<<<..[.((((.>>>>.<<<<.<<<<<..<<<<<<<<....
.<<<.<<<..<<<..<<.<<..<<<<<<<<........>>>>>.>>>>>.
.>>>>>......<<.......<<<<<<<..<<...<<<<<<<.<.<<...
..<<<<<......>>>>>......>>.>.....<<<....>>>....<<<
<<<..<<....>>>>>>>>.>>>>>>>..>>.>>>>>>><<<....<<<.
.<<<<<<<.........>>>>>>>>>>......>>>..<<<<<<<<....
>>>>...>>>>.>>.<<<<<.<.........>>>>>>.<<<<....>>>>
...>>>>>>.........<<<....<<<<....>>>>..>>>..>>.>>>
>>>..<<<<......<<<<....>>>>.....>>>>...<.<<<<<....
..<.<<<<<<<<.......>>>>>>>>.>........>>>>>....>..<
<<<<(((...<<<<<.......)))........>>>>>>>>>>..>>>>>
>>>>..........<<<((.....<<<<...<<<.<<<<<<<.<<<<<<<
<<<......<<<<<<.....>>>>>>....>>>>>>>>..>>>>>>>>>.
..<<<<<<<<...<<<<<<<....<<<<<<<<...<<<......>>>...
...>>>>>>>>...........<<....>>.>>>>>>>..>>>>.>>>>.
..>>>...>>>>....<<<<<<...<<...<<<<.<.....>.>>>>...
>>>>>>>>..........<<<<<<.<<<<<<<<<<<<<.....>>>>>>>
>>>>>>..<<..))>>.....>>>>>>.>>>.<<<......<<<<....>
>>>....>>>..)))).]<<<<<.<<<<<<<.<<.<<<<<<..<<<<<<<
<<<......<<......>>..........<<<<<<<......<<<<<<<.
...<<<.<....>>>>......<......>..>>>>>.>>.<<<.<....
<<<<<<.......<<<<<<<<<....>>>..<<<<......>>>>..>>>
>>>.....<<<<.<<<<<<<...<<..<<<.....>>>>>....>>>>>>
>.....<<<<<.....>>>>>........>>>>.........>>>...>>
>.>>>>...>>>>>>>...>>.>>>>>>>>.....<<<<<<<.....<<<
..<<...<<<....>>>...>>....>>>.....>>>>>>>......<..
..<<<<<<<........>>>>>>>....>.....>>>>>>....<<<<<<
<.........>>>>>>>......>>...>>>>>>>>>>.>>......<<.
.<<<<.<<<..<<<<<<<<<<<<....<<<<<<.<<<<..<<....>>.>
>>>>>>>>>...>>>>>>>>>>>>..>>>.>>>>....>>........<<
<<<<<<<.>>>>>>>>>......
Receptor-Ligand Complex Structure
Global viewLocal viewStructure summary

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PDB6xza Insights into the improved macrolide inhibitory activity from the high-resolution cryo-EM structure of dirithromycin bound to the E. coli 70S ribosome.
Resolution2.66 Å
Binding residue
(original residue number in PDB)		H22 N28 N29 T33 Q38 G39 N40 A41 W44 T46 G48 G49 R53 G54 K57 K87 P115 I116 P117 H118 N119 G120 C121 R122 K125 R127 R128 V129
Binding residue
(residue number reindexed from 1)		H10 N16 N17 T21 Q26 G27 N28 A29 W32 T34 G36 G37 R41 G42 K45 K75 P103 I104 P105 H106 N107 G108 C109 R110 K113 R115 R116 V117
Enzymatic activity
Enzyme Commision number ?
Gene Ontology
Molecular Function
GO:0003735 structural constituent of ribosome
GO:0005515 protein binding
GO:0019843 rRNA binding
GO:0070181 small ribosomal subunit rRNA binding
Biological Process
GO:0002181 cytoplasmic translation
GO:0006412 translation
Cellular Component
GO:0005737 cytoplasm
GO:0005829 cytosol
GO:0005840 ribosome
GO:0022627 cytosolic small ribosomal subunit
GO:1990904 ribonucleoprotein complex

View graph for
Molecular Function
View graph for
Biological Process
View graph for
Cellular Component
External links
PDB RCSB:6xza, PDBe:6xza, PDBj:6xza
PDBsum6xza
PubMed32144191
UniProtP0A7R9|RS11_ECOLI Small ribosomal subunit protein uS11 (Gene Name=rpsK)

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