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Job ID: example | Generated: 2025-10-23 17:08:21
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description Input Sequences

Input Sequences

>H1227-1
MALNTPQITPTKKITVRAIGEELPRGDYQRCPQCDMLFSLPEINSHQSAYCPRCQAKIRDGRDWSLTRLAAMAFTMLLLMPFAWGEPLLHIWLLGIRIDANVMQGIWQMTKQGDAITGSMVFFCVIGAPLILVTSIAYLWFGNRLGMNLRPVLLMLERLKEWVMLDIYLVGIGVASIKVQDYAHIQAGVGLFSFVALVILTTVTLSHLNVEELWERFYPQRPATRRDEKLRVCLGCHFTGYPDQRGRCPRCHIPLRLRRRHSLQKCWAALLASIVLLLPANLLPISIIYLNGGRQEDTILSGIMSLASSNIAVAGIVFIASILVPFTKVIVMFTLLLSIHFKCQQGLRTRILLLRMVTWIGRWSMLDLFVISLTMSLINRDQILAFTMGPAAFYFGAAVILTILAVEWLDSRLLWDAHESGNARFDD
>H1227-2
MSQETPASTTEAQIKNKRRISPFWLLPFIALMIASWLIWDSYQDRGNTVTIDFMSADGIVPGRTPVRYQGVEVGTVQDISLSDDLRKIEVKVSIKSDMKDALREETQFWLVTPKASLAGVSGLDALVGGNYIGMMPGKGKEQDHFVALDTQPKYRLDNGDLMIHLQAPDLGSLNSGSLVYFRKIPVGKVYDYAINPNKQGVVIDVLIERRFTDLVKKGSRFWNVSGVDANVSISGAKVKLESLAALVNGAIAFDSPEESKPAEAEDTFGLYEDLAHSQRGVIIKLELPSGAGLTADSTPLMYQGLEVGQLTKLDLNPGGKVTGEMTVDPSVVTLLRENTRIELRNPKLSLSDANLSALLTGKTFELVPGDGEPRKEFVVVPGEKALLHEPDVLTLTLTAPESYGIDAGQPLILHGVQVGQVIDRKLTSKGVTFTVAIEPQHRELVKGDSKFVVNSRVDVKVGLDGVEFLGASASEWINGGIRILPGDKGEMKASYPLYANLEKALENSLSDLPTTTVSLSAETLPDVQAGSVVLYRKFEVGEVITVRPRANAFDIDLHIKPEYRNLLTSNSVFWAEGGAKVQLNGSGLTVQASPLSRALKGAISFDNLSGASASQRKGDKRILYASETAARAVGGQITLHAFDAGKLAVGMPIRYLGIDIGQIQTLDLITARNEVQAKAVLYPEYVQTFARGGTRFSVVTPQISAAGVEHLDTILQPYINVEPGRGNPRRDFELQEATITDSRYLDGLSIIVEAPEAGSLGIGTPVLFRGLEVGTVTGMTLGTLSDRVMIAMRISKRYQHLVRNNSVFWLASGYSLDFGLTGGVVKTGTFNQFIRGGIAFATPPGTPLAPKAQEGKHFLLQESEPKEWREWGTALPK

Sequence Details

Chain A H1227-1 Length: 427 residues
1 MALNTPQITPTKKITVRAIGEELPRGDYQRCPQCDMLFSLPEINSHQSAYCPRCQAKIRD
61 GRDWSLTRLAAMAFTMLLLMPFAWGEPLLHIWLLGIRIDANVMQGIWQMTKQGDAITGSM
121 VFFCVIGAPLILVTSIAYLWFGNRLGMNLRPVLLMLERLKEWVMLDIYLVGIGVASIKVQ
181 DYAHIQAGVGLFSFVALVILTTVTLSHLNVEELWERFYPQRPATRRDEKLRVCLGCHFTG
241 YPDQRGRCPRCHIPLRLRRRHSLQKCWAALLASIVLLLPANLLPISIIYLNGGRQEDTIL
301 SGIMSLASSNIAVAGIVFIASILVPFTKVIVMFTLLLSIHFKCQQGLRTRILLLRMVTWI
361 GRWSMLDLFVISLTMSLINRDQILAFTMGPAAFYFGAAVILTILAVEWLDSRLLWDAHES
421 GNARFDD
Chain B H1227-2 Length: 877 residues
1 MSQETPASTTEAQIKNKRRISPFWLLPFIALMIASWLIWDSYQDRGNTVTIDFMSADGIV
61 PGRTPVRYQGVEVGTVQDISLSDDLRKIEVKVSIKSDMKDALREETQFWLVTPKASLAGV
121 SGLDALVGGNYIGMMPGKGKEQDHFVALDTQPKYRLDNGDLMIHLQAPDLGSLNSGSLVY
181 FRKIPVGKVYDYAINPNKQGVVIDVLIERRFTDLVKKGSRFWNVSGVDANVSISGAKVKL
241 ESLAALVNGAIAFDSPEESKPAEAEDTFGLYEDLAHSQRGVIIKLELPSGAGLTADSTPL
301 MYQGLEVGQLTKLDLNPGGKVTGEMTVDPSVVTLLRENTRIELRNPKLSLSDANLSALLT
361 GKTFELVPGDGEPRKEFVVVPGEKALLHEPDVLTLTLTAPESYGIDAGQPLILHGVQVGQ
421 VIDRKLTSKGVTFTVAIEPQHRELVKGDSKFVVNSRVDVKVGLDGVEFLGASASEWINGG
481 IRILPGDKGEMKASYPLYANLEKALENSLSDLPTTTVSLSAETLPDVQAGSVVLYRKFEV
541 GEVITVRPRANAFDIDLHIKPEYRNLLTSNSVFWAEGGAKVQLNGSGLTVQASPLSRALK
601 GAISFDNLSGASASQRKGDKRILYASETAARAVGGQITLHAFDAGKLAVGMPIRYLGIDI
661 GQIQTLDLITARNEVQAKAVLYPEYVQTFARGGTRFSVVTPQISAAGVEHLDTILQPYIN
721 VEPGRGNPRRDFELQEATITDSRYLDGLSIIVEAPEAGSLGIGTPVLFRGLEVGTVTGMT
781 LGTLSDRVMIAMRISKRYQHLVRNNSVFWLASGYSLDFGLTGGVVKTGTFNQFIRGGIAF
841 ATPPGTPLAPKAQEGKHFLLQESEPKEWREWGTALPK

analytics Stoichiometry Predictions

Top Prediction Rankings

Weighted combination of chain-level and global predictions

Rank Stoichiometry Score Description
1 A1B6 0.4100 Chain A (H1227-1): 1 copies; Chain B (H1227-2): 6 copies
2 A1B5 0.1325 Chain A (H1227-1): 1 copies; Chain B (H1227-2): 5 copies
3 A6B6 0.1183 Chain A (H1227-1): 6 copies; Chain B (H1227-2): 6 copies
4 A3B6 0.0913 Chain A (H1227-1): 3 copies; Chain B (H1227-2): 6 copies
5 A1B2 0.0463 Chain A (H1227-1): 1 copies; Chain B (H1227-2): 2 copies
6 A2B6 0.0239 Chain A (H1227-1): 2 copies; Chain B (H1227-2): 6 copies
7 A2B5 0.0142 Chain A (H1227-1): 2 copies; Chain B (H1227-2): 5 copies
8 A4B2 0.0104 Chain A (H1227-1): 4 copies; Chain B (H1227-2): 2 copies
9 A1B1 0.0102 Chain A (H1227-1): 1 copies; Chain B (H1227-2): 1 copies
10 A5B6 0.0044 Chain A (H1227-1): 5 copies; Chain B (H1227-2): 6 copies

Chain-level Copy Number Predictions

Predicted number of copies for each individual chain

Chain A (H1227-1)
1:
0.725
6:
0.168
2:
0.035
3:
0.026
5:
0.015
7:
0.008
Chain B (H1227-2)
6:
0.942
5:
0.022
2:
0.016
3:
0.004
1:
0.004
4:
0.003

Global Stoichiometry Predictions

Overall stoichiometry classes based on copy number ratios. For example, both A2B1 and A1B2 configurations belong to the (2,1) class.

(6,1)
0.293
(5,1)
0.183
(6,3)
0.120
(6,6)
0.101
(2,1)
0.061
(6,2)
0.020
(5,2)
0.020
(4,2)
0.015

menu_book Citation

Liu, Q., Peng, C., Zheng, W., Zhang, C., & Freddolino, L. (2025). StoPred: Accurate Stoichiometry Prediction for Protein Complexes Using Protein Language Models and Graph Attention. Preprint. https://github.com/QuanEvans/StoPred

FreddolinoLab@umich.edu | 1150 W. Medical Center Dr, Ann Arbor, MI 48109-0600