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I-TASSER results for job id S802444

(Click on S802444_results.tar.bz2 to download the tarball file including all modeling results listed on this page. Click on Annotation of I-TASSER Output to read the instructions for how to interpret the results on this page. Model results are kept on the server for 60 days, there is no way to retrieve the modeling data older than 2 months)

  Submitted Sequence in FASTA format

>protein
KLVVVGAVGV

  Predicted Secondary Structure

Sequence
          
KLVVVGAVGV
PredictionCSSSSSSSCC
Conf.Score9799976209
H:Helix; S:Strand; C:Coil

  Predicted Solvent Accessibility

Sequence
          
KLVVVGAVGV
Prediction7323323347
Values range from 0 (buried residue) to 9 (highly exposed residue)

   Predicted normalized B-factor

(B-factor is a value to indicate the extent of the inherent thermal mobility of residues/atoms in proteins. In I-TASSER, this value is deduced from threading template proteins from the PDB in combination with the sequence profiles derived from sequence databases. The reported B-factor profile in the figure below corresponds to the normalized B-factor of the target protein, defined by B=(B'-u)/s, where B' is the raw B-factor value, u and s are respectively the mean and standard deviation of the raw B-factors along the sequence. Click here to read more about predicted normalized B-factor)


  Top 10 threading templates used by I-TASSER

(I-TASSER modeling starts from the structure templates identified by LOMETS from the PDB library. LOMETS is a meta-server threading approach containing multiple threading programs, where each threading program can generate tens of thousands of template alignments. I-TASSER only uses the templates of the highest significance in the threading alignments, the significance of which are measured by the Z-score, i.e. the difference between the raw and average scores in the unit of standard deviation. The templates in this section are the 10 best templates selected from the LOMETS threading programs. Usually, one template of the highest Z-score is selected from each threading program, where the threading programs are sorted by the average performance in the large-scale benchmark test experiments.)

Rank PDB
Hit		Iden1Iden2CovNorm.
Z-score		Download
Align.		 
          
Sec.Str
Seq		CSSSSSSSCC
KLVVVGAVGV
11ewsA 0.30 0.30 1.00 1.08Download WEVIDGSCGL
26qxfK 0.33 0.30 0.90 2.71Download RLVFLGDNY-
31m93C 0.30 0.30 1.00 1.03Download KILFVGRYSS
47oe2A 0.40 0.20 0.50 2.10Download -----GSLGI
54yuuW 0.70 0.70 1.00 1.02Download ALVVVAAVLV
63ulyB 0.30 0.30 1.00 1.62Download DGVLVDEFGL
77b5mP 0.33 0.20 0.60 1.60Download ----AGSVEQ
86f0xQ 0.11 0.10 0.90 1.57Download KILRLSGKP-
97ml1U 0.20 0.30 1.00 0.79Download KCSLKDGVVT
105nkk 0.40 0.40 1.00 0.47Download KIKVIGVIGK
(a)All the residues are colored in black; however, those residues in template which are identical to the residue in the query sequence are highlighted in color. Coloring scheme is based on the property of amino acids, where polar are brightly coloured while non-polar residues are colored in dark shade. (more about the colors used)
(b)Rank of templates represents the top ten threading templates used by I-TASSER.
(c)Ident1 is the percentage sequence identity of the templates in the threading aligned region with the query sequence.
(d)Ident2 is the percentage sequence identity of the whole template chains with query sequence.
(e)Cov represents the coverage of the threading alignment and is equal to the number of aligned residues divided by the length of query protein.
(f)Norm. Z-score is the normalized Z-score of the threading alignments. Alignment with a Normalized Z-score >1 mean a good alignment and vice versa.
(g)Download Align. provides the 3D structure of the aligned regions of the threading templates.
(h)The top 10 alignments reported above (in order of their ranking) are from the following threading programs:
       1: wdPPAS   2: SP3   3: wdPPAS   4: SP3   5: wdPPAS   6: SP3   7: SP3   8: SP3   9: SPARKS-X   10: HHSEARCH2   

   Top 5 final models predicted by I-TASSER

(For each target, I-TASSER simulations generate a large ensemble of structural conformations, called decoys. To select the final models, I-TASSER uses the SPICKER program to cluster all the decoys based on the pair-wise structure similarity, and reports up to five models which corresponds to the five largest structure clusters. The confidence of each model is quantitatively measured by C-score that is calculated based on the significance of threading template alignments and the convergence parameters of the structure assembly simulations. C-score is typically in the range of [-5, 2], where a C-score of a higher value signifies a model with a higher confidence and vice-versa. TM-score and RMSD are estimated based on C-score and protein length following the correlation observed between these qualities. Since the top 5 models are ranked by the cluster size, it is possible that the lower-rank models have a higher C-score in rare cases. Although the first model has a better quality in most cases, it is also possible that the lower-rank models have a better quality than the higher-rank models as seen in our benchmark tests. If the I-TASSER simulations converge, it is possible to have less than 5 clusters generated; this is usually an indication that the models have a good quality because of the converged simulations.)
    (By right-click on the images, you can export image file or change the configurations, e.g. modifying the background color or stopping the spin of your models)
  • Download Model 1
  • C-score=-0.54 (Read more about C-score)
  • Estimated TM-score = 0.64±0.13
  • Estimated RMSD = 0.8±0.8Å


  Proteins structurally close to the target in the PDB (as identified by TM-align)

(After the structure assembly simulation, I-TASSER uses the TM-align structural alignment program to match the first I-TASSER model to all structures in the PDB library. This section reports the top 10 proteins from the PDB that have the closest structural similarity, i.e. the highest TM-score, to the predicted I-TASSER model. Due to the structural similarity, these proteins often have similar function to the target. However, users are encouraged to use the data in the next section 'Predicted function using COACH' to infer the function of the target protein, since COACH has been extensively trained to derive biological functions from multi-source of sequence and structure features which has on average a higher accuracy than the function annotations derived only from the global structure comparison.)


Top 10 Identified stuctural analogs in PDB

Click
to view		RankPDB HitTM-scoreRMSDaIDENaCovAlignment
12qn6A20.607 0.930.2000.800Download
26dxpA0.593 0.310.1000.800Download
32ahoA0.588 1.060.2000.800Download
42pziA0.586 0.780.2220.900Download
57kx7A20.586 1.310.0001.000Download
63qfkA0.571 0.820.0000.900Download
77rasA10.569 0.250.0000.700Download
81k2yX0.568 0.120.3330.600Download
96wt9A0.568 1.050.0000.900Download
104g1eB0.561 1.380.1001.000Download

(a)Query structure is shown in cartoon, while the structural analog is displayed using backbone trace.
(b)Ranking of proteins is based on TM-score of the structural alignment between the query structure and known structures in the PDB library.
(c)RMSDa is the RMSD between residues that are structurally aligned by TM-align.
(d)IDENa is the percentage sequence identity in the structurally aligned region.
(e)Cov represents the coverage of the alignment by TM-align and is equal to the number of structurally aligned residues divided by length of the query protein.


  Predicted function using COFACTOR and COACH

(This section reports biological annotations of the target protein by COFACTOR and COACH based on the I-TASSER structure prediction. While COFACTOR deduces protein functions (ligand-binding sites, EC and GO) using structure comparison and protein-protein networks, COACH is a meta-server approach that combines multiple function annotation results (on ligand-binding sites) from the COFACTOR, TM-SITE and S-SITE programs.)

  Ligand binding sites


Click
to view		RankC-scoreCluster
size		 PDB
Hit		 Lig
Name		 Download
Complex		 Ligand Binding Site Residues
10.24 4 4x64P MG Rep, Mult 5,6
20.11 2 4qh4A ACT Rep, Mult 1,2,4
30.11 2 5ioqA DUR Rep, Mult 6,7,8,9,10
40.06 1 1po14 PEPTIDE Rep, Mult 5,6,7,8


Download the residue-specific ligand binding probability, which is estimated by SVM.
Download the all possible binding ligands and detailed prediction summary.
Download the templates clustering results.
(a)C-score is the confidence score of the prediction. C-score ranges [0-1], where a higher score indicates a more reliable prediction.
(b)Cluster size is the total number of templates in a cluster.
(c)Lig Name is name of possible binding ligand. Click the name to view its information in the BioLiP database.
(d)Rep is a single complex structure with the most representative ligand in the cluster, i.e., the one listed in the Lig Name column.
Mult is the complex structures with all potential binding ligands in the cluster.

  Enzyme Commission (EC) numbers and active sites


Click
to view		RankCscoreECPDB
Hit		TM-scoreRMSDaIDENaCovEC NumberActive Site Residues
10.2271k2yX0.568 0.120.3330.600 5.4.2.2 5.4.2.8  NA
20.1922dphA0.537 1.240.1000.800 1.2.99.4  NA
30.1912dfiA0.535 1.410.2000.900 3.4.11.18  NA
40.1871cb5A0.533 0.320.0000.700 3.4.22.40  NA
50.1861qwyA0.508 0.770.0001.000 3.4.24.75  NA

 Click on the radio buttons to visualize predicted active site residues.
(a)CscoreEC is the confidence score for the EC number prediction. CscoreEC values range in between [0-1];
where a higher score indicates a more reliable EC number prediction.
(b)TM-score is a measure of global structural similarity between query and template protein.
(c)RMSDa is the RMSD between residues that are structurally aligned by TM-align.
(d)IDENa is the percentage sequence identity in the structurally aligned region.
(e)Cov represents the coverage of global structural alignment and is equal to the number of structurally aligned residues divided
by length of the query protein.

  Gene Ontology (GO) terms
Top 10 homologous GO templates in PDB 
RankCscoreGOTM-scoreRMSDaIDENaCovPDB HitAssociated GO Terms
1 0.230.5707 0.82 0.00 0.903qfkA GO:0046872 GO:0000166 GO:0009166 GO:0016787 GO:0016788
2 0.230.5676 0.12 0.33 0.601k2yX GO:0000287 GO:0003824 GO:0005975 GO:0046872 GO:0009103 GO:0042121 GO:0016853 GO:0004615 GO:0004614 GO:0016868 GO:0008152
3 0.220.5374 1.98 0.00 1.001syxA GO:0005654 GO:0005515 GO:0005681 GO:0005634 GO:0006397 GO:0051301 GO:0000398 GO:0010467 GO:0008380 GO:0000375 GO:0000245 GO:0007067 GO:0007049
4 0.170.5577 1.62 0.10 1.002wskA GO:0005980 GO:0008152 GO:0016787 GO:0043169 GO:0016798 GO:0004553 GO:0005975 GO:0004133 GO:0003824 GO:0005977
5 0.160.5861 0.78 0.22 0.902pziA GO:0016301 GO:0000166 GO:0006543 GO:0016740 GO:0044413 GO:0052369 GO:0004674 GO:0005515 GO:0046777 GO:0006538 GO:0005524 GO:0040007 GO:0005829 GO:0052027 GO:0009405 GO:0001899 GO:0052190 GO:0016310 GO:0005886 GO:0004672 GO:0005488 GO:0006468 GO:0016772
6 0.150.4870 1.24 0.20 0.802plfA GO:0000166 GO:0006412 GO:0003743 GO:0005525 GO:0003924 GO:0006184 GO:0006413
7 0.150.5431 1.91 0.10 0.803eu7A GO:0005515
8 0.130.2999 1.25 0.25 0.801f0cB GO:0004867


Consensus prediction of GO terms		 
Molecular Function GO:0046872 GO:0016866 GO:0016787 GO:0005515 GO:0035639 GO:0032559
GO-Score 0.40 0.38 0.36 0.35 0.33 0.33
Biological Process GO:0034655 GO:0009117 GO:0008653 GO:0046354 GO:0042120 GO:0000087 GO:0000398 GO:0000280 GO:0022618 GO:0044247
GO-Score 0.46 0.46 0.45 0.45 0.45 0.45 0.45 0.45 0.45 0.34
Cellular Component GO:0032991 GO:0031981 GO:0044444 GO:0071944
GO-Score 0.45 0.45 0.33 0.33

(a)CscoreGO is a combined measure for evaluating global and local similarity between query and template protein. It's range is [0-1] and higher values indicate more confident predictions.
(b)TM-score is a measure of global structural similarity between query and template protein.
(c)RMSDa is the RMSD between residues that are structurally aligned by TM-align.
(d)IDENa is the percentage sequence identity in the structurally aligned region.
(e)Cov represents the coverage of global structural alignment and is equal to the number of structurally aligned residues divided by length of the query protein.
(f)The second table shows a consensus GO terms amongst the top scoring templates. The GO-Score associated with each prediction is defined as the average weight of the GO term, where the weights are assigned based on CscoreGO of the template.


[Click on S802444_results.tar.bz2 to download the tarball file including all modeling results listed on this page]


Please cite the following articles when you use the I-TASSER server:
  • Wei Zheng, Chengxin Zhang, Yang Li, Robin Pearce, Eric W. Bell, Yang Zhang. Folding non-homology proteins by coupling deep-learning contact maps with I-TASSER assembly simulations. Cell Reports Methods, 1: 100014 (2021).
  • Chengxin Zhang, Peter L. Freddolino, and Yang Zhang. COFACTOR: improved protein function prediction by combining structure, sequence and protein-protein interaction information. Nucleic Acids Research, 45: W291-299 (2017).
  • Jianyi Yang, Yang Zhang. I-TASSER server: new development for protein structure and function predictions, Nucleic Acids Research, 43: W174-W181, 2015.