Structure of PDB 8btk Chain SX Binding Site BS01

Receptor Information

>8btk Chain SX (length=425) Species: 9615 (Canis lupus familiaris)

FLEVIKPFCVILPEIQKPERKIQFKEKVLWTAITLFIFLVCCQIPLFGIM
SSDSADPFYWMRVILASNRGTLMELGISPIVTSGLIMQLLAGAKIIEVGD
TPKDRALFNGAQKLFGMIITIGQSIVYVMGICLLITIQLFVAGLIVLLLD
ELLQKGYGLGSGISLFIATNICETIVWKAFSPTTVNTGRGMEFEGAIIAL
FHLLATRTDKVRALREAFYRQNLPNLMNLIATIFVFAVVIYFQGFRVDLP
IKSARYRGQYNTYPIKLFYTSNIPIILQSALVSNLYVISQMLSARFPVGG
LCHYLSPPESFGSVLEDPVHAVVYIVFMLGSCAFFSKTWIEVSGSSAKDV
AKQLKEQQMVMRGHRETSMVHELNRYIPTAAAFGGLCIGALSVLADFLGA
IGSGTGILLAVTIIYQYFEIFVKEQ

Ligand information

>8btk Chain B5 (length=3764)

cgcgaccucagaucagacguggcgacccgcugaauuuaagcauauuaguc
agcggaggaaaagaaacuaaccaggauucccucaguaacggcgagugaac
agggaagagcccagcgccgaauccccgccccgcgguggggcgcgggaaau
guggcguacggaagacccacuccccggcgccgcucguggggggcccaagu
ccuucugaucgaggcccagcccguggacggugugaggccgguagcggccc
ccggcgcgccgggcccgggucuucccggagucggguugcuugggaaugca
gcccaaagcgggugguaaacuccaucuaaggcuaaauaccggcacgagac
cgauagucaacaaguaccguaagggaaaguugaaaagaacuuugaagaga
gaguucaagagggcgugaaaccguuaagagguaaacgggugggguccgcg
caguccgcccggaggauucaacccggcggcgugguccggccgugccggcg
gucucggcggaucuuucccgcuccccguuccuggggguggggucggcggg
ggaccgccccccggccggcgaccggccgccgccgggcgcauuuccaccgc
ggcggugcgccgcgaccggcuccgggacggcugggaaggccccggcgggg
aagguggcccggggggacgccucgccgccgucguccgcggcggcggcggg
cgcgaccccuccccggguguuacagccccgccccggcagcagcagcucgc
cgaaucccggggccgagggagcgagaccugugucgccgcgcucucccccc
ucgggggggccgggccgccccucccacggcgcgaccgcucggggcggacu
guccccagugcgccccgggcgugucacgccgucgggcucgggggaggcca
cggcgcgucgcgcgccggcgcgcgcgcgcgagcgagcgcacggggucggc
ggcgaugucggcuacccacccgacccgucuugaaacacggaccaaggagu
cuaacacgugcgcgagucgggggcucgcacgaaagccgccguggcgcaau
gaaggugaaggccggcggcggcgccgucgucggccgaggugggaucccga
ggcccuuccaguccgccgagggcgcaccaccggcccgucucgcccgccgc
gccggggagguggagcacgagcgcacguguuaggacccgaaagaugguga
acuaugccugggcagggcgaagccagaggaaacucugguggagguccgua
gcgguccugacgugcaaaucggucguccgaccuggguauaggggcgaaag
acuaaucgaaccaucuaguagcugguucccuccgaaguuucccucaggau
agcuggcgcucucgcaaccccgcaguuuuauccgguaaagcgaaugauua
gaggucuuggggccgaaacgaucucaaccuauucucaaacuuuaaauggg
uaagaagcccggcucgcuggcguggagccgggcguggaaugcgagugccu
agugggccacuuuugguaagcagaacuggcgcugcgggaugaaccgaacg
ccggguuaaggcgcccgaugccgacgcucaucagaccccagaaaaggugu
ugguugauauagacagcaggacgguggccauggaagucggaauccgcuaa
ggaguguguaacaacucaccugccgaaucaacuagcccugaaaauggaug
gcgcuggagcgucgggcccauacccggccgucgcuggcagucggcagagc
gagaaagagaguggagccgcggacgcuacgccgcgacgaguaggagggcc
gcugcggugagccuugaagccuagggcgcgggcccggguggagccgccgc
aggugcagaucuuggugguaguagcaaauauucaaacgagaacuuugaag
gccgaaguggagaaggguuccaugugaacagcaguugaacaugggucagu
cgguccugagagaugggcgagcgccguuccgaagggacgggcgauggccu
ccguugcccucagccgaucgaaagggagucggguucagauccccgaaucc
ggaguggcggagaugggcgccgcgaggcguccagugcgguaacgcgaccg
aucccggagaagccggcgggagccccggggagaguucucuuuucuuugug
aagggcagggcgcccuggaauggguucgccccgagagaggggcccgugcc
uuggaaagcgucgcgguuccggcggcguccggugagcucucgcuggcccu
ugaaaauccgggggagaggguguaaaucucgcgccgggccguacccauau
ccgcagcaggucuccaaggugaacagccucuggcauguuggaacaaugua
gguaagggaagucggcaagccggauccguaacuucgggauaaggauuggc
ucuaagggcugguagcagccgacuuagaacuggugcggaccaggggaauc
cgacuguuuaauuaaaacaaagcaucgcgaaggcccgcggcggguguuga
cgcgaugugauuucugcccagugcucugaaugucaaagugaagaaauuca
augaagcgcggguaaacggcgggaguaacuaugacucucuuaagguagcc
aaaugccucgucaucuaauuagugacgcgcaugaauggaugaacgagauu
cccacugucccuaccuacuauccagcgaaaccacagccaagggaacgggc
uuggcggaaucagcggggaaagaagacccuguugagcuugacucuagucu
ggcacggugaagagacaugagagguguagaauaagugggaggcccgggcc
gccggugaaauaccacuacucuuaucguuuuuucacugacccggugaggc
gggggggcgagccccgaggggcucucgcuucuggcgccaagcgccgggcc
ccgucgguccgggccggcggcggccgggcgcgacccgcuccggggacagu
gccagguggggaguuugacuggggcgguacaccugucaaacgguaacgca
gguguccuaaggcgagcucagggaggacagaaaccucccguggagcagaa
gggcaaaagcucgcuugaucuugauuuucaguacgaauacagaccgugaa
agcggggccucacgauccuucugagcuuuuggguuuuaagcaggaggugu
cagaaaaguuaccacagggauaacuggcuuguggcggccaagcguucaua
gcgacgucgcuuuuugauccuucgaugucggcucuuccuaucauugugaa
gcagaauucaccaagcguuggauuguucacccacuaauagggaacgugag
cuggguuuagaccgucgugagacagguuaguuuuacccuacugaugaugu
guuguugccaugguaauccugcucaguacgagaggaaccgcagguucaga
cauuugguguaugugcuuggcugaggagccaauggggcgaagcuaccauc
ugugggauuaugacugaacgccucuaagucagaaucccgcccaggcggaa
cgauacggcagcgccgaaggagccucgguuggccucggauagccgguccc
ccgcgggguccggugcggagagcccuucgucccgggaaauggggcgcggc
cggaaagggggccgcccucucgcccgucacgcaccgcacguucgugggga
accuggcgcuaaaccauucguagacgaccugcuucugggucgggguuucg
uacguagcagagcagcucccucgcugcgaucuauugaaagucagcccucg
acacaaggguuugu

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

Receptor-Ligand Complex Structure

Structure summary

• PDB: 8btk Molecular basis of the TRAP complex function in ER protein biogenesis.
• Resolution: 3.5 Å
• Binding residue (original residue number in PDB): K25 K268 R271 R273 G403 R405
• Binding residue (residue number reindexed from 1): K21 K252 R255 R257 G363 R365

Gene Ontology

Molecular Function

• GO:0005048 signal sequence binding
• GO:0005515 protein binding
• GO:0008320 protein transmembrane transporter activity
• GO:0043022 ribosome binding

Biological Process

• GO:0006613 cotranslational protein targeting to membrane
• GO:0006616 SRP-dependent cotranslational protein targeting to membrane, translocation
• GO:0015031 protein transport
• GO:0031204 post-translational protein targeting to membrane, translocation
• GO:0039019 pronephric nephron development
• GO:0045047 protein targeting to ER
• GO:0045048 protein insertion into ER membrane

Cellular Component

• GO:0005783 endoplasmic reticulum
• GO:0005784 Sec61 translocon complex
• GO:0005789 endoplasmic reticulum membrane
• GO:0016020 membrane

External links

• PDB: RCSB:8btk, PDBe:8btk, PDBj:8btk
• PDBsum: 8btk
• PubMed: 37170030
• UniProt: P38377|S61A1_CANLF Protein transport protein Sec61 subunit alpha isoform 1 (Gene Name=SEC61A1)