Structure of PDB 5kpx Chain 33 Binding Site BS02

Receptor Information

>5kpx Chain 33 (length=675) Species: 83333 (Escherichia coli K-12)

DPEKWIASLGITSQKSCECLAETWAYCLQQTQGHPDASLLLWRGVEMVEI
LSTLSMDIDTLRAALLFPLADANVVSEDVLRESVGKSVVNLIHGVRDMAQ
VDNVRRMLLAMVDDFRCVVIKLAERIAHLREVKDAPEDERVLAAKECTNI
YAPLANRLGIGQLKWELEDYCFRYLHPTEYKRIAKLLHERRLDREHYIEE
FVGHLRAEMKAEGVKAEVYGRPKHIYSIWRKMQKKNLAFDELFDVRAVRI
VAERLQDCYAALGIVHTHYRHLPDEFDDYVANPKPNGYQSIHTVVLGPGG
KTVEIQIRTKQMHEDAELGVGAAAGGARSGHEDRIAWLRKLIADRVYVFT
PKGDVVDLPAGSTPLDFAYHIHSDVGHRCIGAKIGGRIVPFTYQLQMGDQ
IEIITQKQPNPSRDWLNPNLGYVTTSRGRSKIHAWFRKQDRDKNILAGRQ
ILDDELEHLGISLKEAEKHLLPRYNFNDVDELLAAIGGGDIRLNQMVNFL
QSQFNKPSAEEQDAAALKQLQYTPQNRSKDNGRVVVEGVGNLMHHIARCC
QPIPGDEIVGFITQGRGISVHRADCEQLAELRSHAPERIVDAVWGEGYSL
VVRVVANDRSGLLRDITTILANEKVNVLGVASRSDTKQQLATIDMTIEIY
NLQVLGRVLGKLNQVPDVIDARRLH

Ligand information

>5kpx Chain 27 (length=2903)

gguuaagcgacuaagcguacacgguggaugcccuggcagucagaggcgau
gaaggacgugcuaaucugcgauaagcgucgguaaggugauaugaaccguu
auaaccggcgauuuccgaauggggaaacccaguguguuucgacacacuau
cauuaacugaauccauagguuaaugaggcgaaccgggggaacugaaacau
cuaaguaccccgaggaaaagaaaucaaccgagauucccccaguagcggcg
agcgaacggggagcagcccagagccugaaucaguguguguguuaguggaa
gcgucuggaaaggcgcgcgauacagggugacagccccguacacaaaaaug
cacaugcugugagcucgaugaguagggcgggacacgugguauccugucug
aauauggggggaccauccuccaaggcuaaauacuccugacugaccgauag
ugaaccaguaccgugagggaaaggcgaaaagaaccccggcgaggggagug
aaaaagaaccugaaaccguguacguacaagcagugggagcacgcuuaggc
gugugacugcguaccuuuuguauaaugggucagcgacuuauauucuguag
caagguuaaccgaauaggggagccgaagggaaaccgagucuuaacugggc
guuaaguugcaggguauagacccgaaacccggugaucuagccaugggcag
guugaagguuggguaacacuaacuggaggaccgaaccgacuaaugucgaa
aaauuagcggaugacuuguggcugggggugaaaggccaaucaaaccggga
gauagcugguucuccccgaaagcuauuuagguagcgccucgugaauucau
cuccggggguagagcacuguuucggcaagggggucaucccgacuuaccaa
cccgaugcaaacugcgaauaccggagaauguuaucacgggagacacacgg
cgggugcuaacguccgucgugaagagggaaacaacccagaccgccagcua
aggucccaaagucaugguuaagugggaaacgaugugggaaggcccagaca
gccaggauguuggcuuagaagcagccaucauuuaaagaaagcguaauagc
ucacuggucgagucggccugcgcggaagauguaacggggcuaaaccaugc
accgaagcugcggcagcgacgcuuaugcguuguuggguaggggagcguuc
uguaagccugcgaaggugugcugugaggcaugcuggagguaucagaagug
cgaaugcugacauaaguaacgauaaagcgggugaaaagcccgcucgccgg
aagaccaaggguuccuguccaacguuaaucggggcagggugagucgaccc
cuaaggcgaggccgaaaggcguagucgaugggaaacagguuaauauuccu
guacuugguguuacugcgaaggggggacggagaaggcuauguuggccggg
cgacgguugucccgguuuaagcguguaggcugguuuuccaggcaaauccg
gaaaaucaaggcugaggcgugaugacgaggcacuacggugcugaagcaac
aaaugcccugcuuccaggaaaagccucuaagcaucagguaacaucaaauc
guaccccaaaccgacacagguggucagguagagaauaccaaggcgcuuga
gagaacucgggugaaggaacuaggcaaaauggugccguaacuucgggaga
aggcacgcugauauguaggugaggucccucgcggauggagcugaaaucag
ucgaagauaccagcuggcugcaacuguuuauuaaaaacacagcacugugc
aaacacgaaaguggacguauacggugugacgccugcccggugccgggagg
uuaauugaugggguuagcgcaagcgaagcucuugaucgaagccccgguaa
acggcggccguaacuauaacgguccuaagguagcgaaauuccuugucggg
uaaguuccgaccugcacgaauggcguaaugauggccaggcugucuccacc
cgagacucagugaaauugaacucgcugugaagaugcaguguacccgcggc
aagacggaaagaccccgugaaccuuuacuauagcuugacacugaacauug
agccuugauguguaggauaggugggaggcuuugaaguguggacgccaguc
ugcauggagccgaccuugaaauaccacccuuuaauguuugauguucuaac
guugacccguaauccggguugcggacagugucugguggguaguuugacug
gggcggucuccuccuaaagaguaacggaggagcacgaagguuggcuaauc
cuggucggacaucaggagguuagugcaauggcauaagccagcuugacugc
gagcgugacggcgcgagcaggugcgaaagcaggucauagugauccggugg
uucugaauggaagggccaucgcucaacggauaaaagguacuccggggaua
acaggcugauaccgcccaagaguucauaucgacggcgguguuuggcaccu
cgaugucggcucaucacauccuggggcugaaguaggucccaaggguaugg
cuguucgccauuuaaagugguacgcgagcuggguuuagaacgucgugaga
caguucggucccuaucugccgugggcgcuggagaacugaggggggcugcu
ccuaguacgagaggaccggaguggacgcaucacugguguucggguuguca
ugccaauggcacugcccgguagcuaaaugcggaagagauaagugcugaaa
gcaucuaagcacgaaacuugccccgagaugaguucucccugacccuuuaa
ggguccugaaggaacguugaagacgacgacguugauaggccgggugugua
agcgcagcgaugcguugagcuaaccgguacuaaugaaccgugaggcuuaa
ccu

<<<<<<<<......<<<<<<<<<<<....{[[..[[<<<<<<<[[<<...
...<<<<<<.[..(((.>>>.....<<<<<<<..<<<)))..].>>>...
...>>>>>>>...>>>....<<<....>>><<<<<<<....>>>>>>>.<
<<<<<<<<.........>>>>>>>>>.>>...<<<<<<.....<<....>
>......>>>>>.>.........<<....>>..<<<<<<.....<<....
.>>....>>>>>>..(((..<<<<......<<<<<<<<<<<<<.<<<...
<<<<<......>>>>>((......<<<.....))>>>...>>>...>>>>
>>>>>>>>>...>>>>........<<<<<<<<.........>>>>>>>>.
.....<<<<<..<<<<>>>>>..)))......]].>>>>>>>.]].....
..........<<....>>....]].........<<<<.....>>>>....
.........}....>>>>>>>>>>>.......<<<<..<<<<<<<..>>>
>>>>..>>>>...<.<........>.>.<<<<<<....<<<<<<<<<<<<
<..<<<...<<.....>>...>>>...<<....>>..<<<<.....>>>>
.....>>>>>>>>>>>>>..<<.<...<<<<<<.....<<<<<<<<<..<
<<....<<<<<<......>>>>>>.....>>>...<<<.<<<<<......
..>>>>>>>>....>>>>>>>>>...<<<.....>>>......>>>>>>.
.....>.>>..<<<<<<....<<<<<....>>>>>.<<<<<<<<...<<<
<<<<<<.....<<<...<<<.<<<<...<<<<<<<.....>>>>>.>>..
.>>>>.>>>..>>.>.....>>>>>>>.>>...>>>>>>>.>...<<<<<
<<<<<......>>>>>>>>>>....<<<......>>>...<<<<.<<<..
.<<<(((.....<<<<<<...........<<..<<<<<..<<......<.
<<<<<.<<...<<<<.......>>>>...>>........<<<......>>
>..>>>>>.>..>>..>>>>>.>>...........))).....>>>>>>.
>>>...>>>>>>><<<<<<<<<....>>>>>>>>>....>>>>>>..<<<
<<...<<<......<<<<<<<<....>>>>>>>>...>>>..>>>>>...
.....>>>>>>.......<<.....<<<<<<.......>>>>>><<<<..
..<<<<<.<<...<<<<<<...<<.....>>.>>>>>>....((<<<.<<
<...<<<...<<<....>>>...>>>...>>>..<<<<<........>>>
>>))<<<<<<<<<<<<<...<<<<....<<<<..<<<..<<<<<<<<<<<
....(((...>>>>>><<..<<<<...<<<<<<<<<<<<.<<.....>>>
>>>>>>>..>>>>...>>>>...>><..<<<<<....>>>>>...>>>>>
>...>>>...>>>>.........>>>>...>>....>>>>>>>>>>>.>>
>..>>.....<<......>>>>>>>.<<<<.....>>>>..>>>>..<<<
<....<<<<<<<<.<<.........<.....<<<<<.....<..>.....
.>>>>><<<<<<.....<<<...<<<<.....>>>>...>>>...>>>>>
>............<<<<<<<<<..<<<.........>>>..<<<<<<<..
...<<<....>>>.......>>>>>>>.<<<<<.<<<..<<<<<<<..<<
<........<<<<<..<<....>>...>>>>>........>>>>>>>>..
>>>>><<<<<<.......>>>>>>........<...........<<<<<<
.....>>>>>>.....>....>>>>>..>>.>>>>>>>..>..>>.>>>>
>>>>.>>>>>>...........<<<<<........>>>>>..<<<<<<<<
.(((.[[......<<<<.[[<<<<..<<<<<.<<<.<<<<<.<<<<<<<<
<<<.<<<............<................<<<<<<......>>
>>>>.......................>..>.>>.>>>>>>>>>>>...<
<<.<<<<<<.....>>>>>>>>>....>>>>>.>>>..>>>>>..<<<<.
....>>>><<<<<<...........>>>>>>.(<<...<<<<<<<...<<
<<<<.......>>>>>>.....<<)..(((>>....>>>>>>>...<<<<
..<<<<....>>>>..>>>>.<<<....>>>.>>))).......<<<<<<
<.((..>>>>..))>>>>>>>.............>>>>..]]>>>>....
...<<<<...<<<<<<...<<.......>>...>>>>>>....>>>.>..
.....<<<<<.<<<<<<..<<<<<<<<<......>>>>>>..>>>.<<<<
<.....>>>>>.....>>>>>..>...>>>.>>....<<<<<<<....>>
>.>>>>....]]..)))>>>>>>>>....<<<<<<<...<<<<..<<<<<
<<...............>>>>>>>.<<<<<...<<<<...<<<<<<<<<<
<))).>>>>>>..>>>>>...>>>>.>>>>>...<<<.<..<<<<<....
.......>>>>>...>>>>.>>>>.......>>>>>>>..<<<<<.....
>>>>>.....<<..<<<<<.......>>>>>....<<<<<<<<..<<...
.<<<<<....>>>>>...>>...>>>>>.>>>.....>>.....>>>>>>
>>.

Receptor-Ligand Complex Structure

Structure summary

• PDB: 5kpx Ribosome•RelA structures reveal the mechanism of stringent response activation.
• Resolution: 3.9 Å
• Binding residue (original residue number in PDB): R611 C612 T626 Q627 R629 S632 Q640 E643 K704
• Binding residue (residue number reindexed from 1): R548 C549 T563 Q564 R566 S569 Q577 E580 K637

Enzymatic activity

• Enzyme Commision number: 2.7.6.5: GTP diphosphokinase.

Gene Ontology

Molecular Function

• GO:0005515 protein binding
• GO:0005524 ATP binding
• GO:0005525 GTP binding
• GO:0008728 GTP diphosphokinase activity
• GO:0008893 guanosine-3',5'-bis(diphosphate) 3'-diphosphatase activity
• GO:0016301 kinase activity

Biological Process

• GO:0015949 nucleobase-containing small molecule interconversion
• GO:0015969 guanosine tetraphosphate metabolic process
• GO:0015970 guanosine tetraphosphate biosynthetic process
• GO:0016310 phosphorylation
• GO:0042594 response to starvation

External links

• PDB: RCSB:5kpx, PDBe:5kpx, PDBj:5kpx
• PDBsum: 5kpx
• PubMed: 27434674
• UniProt: P0AG20|RELA_ECOLI GTP pyrophosphokinase (Gene Name=relA)