D-I-TASSER Q8WWG9

D-I-TASSER results for Q8WWG9

[Click result.zip to download all results on this page]

Summary of the Protein

Uniprot ID: Q8WWG9
Protein Name: Potassium voltage-gated channel subfamily E member 4
Gene Name: KCNE4

Input Sequence in FASTA format

>Q8WWG9 (221 residues)
MHFLTIYPNCSSGVVRAQSRTEQKNPLGLDDLGIQNLGQTVSLAPAVEAASMLKMEPLNS
THPGTAASSSPLESRAAGGGSGNGNEYFYILVVMSFYGIFLIGIMLGYMKSKRREKKSSL
LLLYKDEERLWGEAMKPLPVVSGLRSVQVPLMLNMLQESVAPALSCTLCSMEGDSVSSES
SSPDVHLTIQEEGADDELEETSETPLNESSEGSSENIHQNS

Predicted Contact and Distance Map Used in D-I-TASSER simulation

Contact Map

Distance Map

D-I-TASSER simulation is guided by the consensus contact map (left figure) and distance map (right figure) derived based on confidence scores of AttentionPotential. In the contact, distance map and hydrogen bond networks, the axes mark the residue index along the sequence. For the contact map, each dot represents a residue pair with predicted contact, while for the distance map and hydrogen bond network, a color scale represents a distance of 1-20+ angstroms or a angle of 0-180 degree.

Information of Domain

No. of Domain	Domain	Domain Boundary	Length of Domain	Models of Domain	Sequence
1	Q8WWG9-D1	1-67	67		MHFLTIYPNCSSGVVRAQSRTEQKNPLGLDDLGIQNLGQTVSLAPAVEAASMLKMEPLNSTHPGTAA
2	Q8WWG9-D2	68-221	154		SSSPLESRAAGGGSGNGNEYFYILVVMSFYGIFLIGIMLGYMKSKRREKKSSLLLLYKDEERLWGEAMKPLPVVSGLRSVQVPLMLNMLQESVAPALSCTLCSMEGDSVSSESSSPDVHLTIQEEGADDELEETSETPLNESSEGSSENIHQNS

Top 1 final models from D-I-TASSER

Click to view	Rank^a	Download	Estimated TM-score^b
	1	model1.pdb.gz	0.58

(a)

D-I-TASSER simulations generate a large ensemble of structural conformations, i.e. decoys. These decoys are clustered by SPICKER based on pairwise structure similarity to report up to five final models from the five largest clusters. Models are ranked in descending order of cluster size. If the simulations converge well, it is possible to have less than 5 models generated, which is usually an indication of good model quality.

(b)

The model confidence is quantitatified by estimated TM-score (eTM-score), calculated based on significance of threading template alignments, contact map satisfaction rate, mean absolute error between distance of model and distance of AttentionPotential, and convergence of D-I-TASSER simulations. eTM-score is typically in the range of [0, 1], with higher eTM-score signifies higher model confidence.

Proteins with similar structure

Top 10 structural analogs in PDB (as identified by TM-align)

Rank	PDB Hit	TM-score	RMSD^a	IDEN^a	Cov.	Download Alignment
1	4tr2A	0.50	5.57	0.053	0.828	model1_4tr2A.pdb.gz
2	6mw4A	0.48	5.62	0.061	0.815	model1_6mw4A.pdb.gz
3	5wvqA	0.46	5.40	0.057	0.760	model1_5wvqA.pdb.gz
4	2wanA	0.46	5.38	0.057	0.765	model1_2wanA.pdb.gz
5	3wdjA	0.46	5.58	0.056	0.783	model1_3wdjA.pdb.gz
6	3k1dA	0.46	5.40	0.058	0.751	model1_3k1dA.pdb.gz
7	1m7xB2	0.46	5.37	0.048	0.756	model1_1m7xB2.pdb.gz
8	3whiA	0.46	5.45	0.056	0.765	model1_3whiA.pdb.gz
9	2zwoA	0.46	5.52	0.077	0.778	model1_2zwoA.pdb.gz
10	5gquA	0.45	5.32	0.043	0.733	model1_5gquA.pdb.gz

(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)	RMSD^a is the RMSD between residues that are structurally aligned by TM-align.
(d)	IDEN^a 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 Gene Ontology (GO) Terms

Molecular Function (MF)

GO term	Cscore^GO	Name
GO:0044325	0.64	ion channel binding
GO:0005267	0.61	potassium channel activity

Download full result of the above consensus prediction.

Click the graph to show a high resolution version.

(a)

Cscore^GO is the confidence score of predicted GO terms. Cscore^GO values range in between [0-1]; where a higher value indicates a better confidence in predicting the function using the template.

(b)

The graph shows the predicted terms within the Gene Ontology hierachy for Molecular Function. Confidently predicted terms are color coded by Cscore^GO:

[0.4,0.5)

[0.5,0.6)

[0.6,0.7)

[0.7,0.8)

[0.8,0.9)

[0.9,1.0]

Biological Process (BP)

GO term	Cscore^GO	Name
GO:1901379	0.96	regulation of potassium ion transmembrane transport
GO:0019538	0.69	protein metabolic process
GO:0065008	0.66	regulation of biological quality
GO:0060306	0.62	regulation of membrane repolarization
GO:2001257	0.55	regulation of cation channel activity
GO:1901380	0.55	negative regulation of potassium ion transmembrane transport
GO:1902260	0.50	negative regulation of delayed rectifier potassium channel activity

Download full result of the above consensus prediction.

Click the graph to show a high resolution version.

(a)

Cscore^GO is the confidence score of predicted GO terms. Cscore^GO values range in between [0-1]; where a higher value indicates a better confidence in predicting the function using the template.

(b)

The graph shows the predicted terms within the Gene Ontology hierachy for Biological Process. Confidently predicted terms are color coded by Cscore^GO:

[0.4,0.5)

[0.5,0.6)

[0.6,0.7)

[0.7,0.8)

[0.8,0.9)

[0.9,1.0]

Cellular Component (CC)

GO term	Cscore^GO	Name
GO:0044459	1.00	plasma membrane part
GO:0008076	0.76	voltage-gated potassium channel complex
GO:0016020	0.63	membrane

Download full result of the above consensus prediction.

Click the graph to show a high resolution version.

(a)

Cscore^GO is the confidence score of predicted GO terms. Cscore^GO values range in between [0-1]; where a higher value indicates a better confidence in predicting the function using the template.

(b)

The graph shows the predicted terms within the Gene Ontology hierachy for Cellular Component. Confidently predicted terms are color coded by Cscore^GO:

[0.4,0.5)

[0.5,0.6)

[0.6,0.7)

[0.7,0.8)

[0.8,0.9)

[0.9,1.0]

Predicted Enzyme Commission (EC) Numbers

Top 5 enzyme homologs in PDB

Rank	Cscore^EC	PDB Hit	TM-score	RMSD^a	IDEN^a	Cov.	EC Number	Predicted Active Site Residues
1	0.060	2bs9E	0.427	5.70	0.031	0.742	3.2.1.37	NA
2	0.060	3m07A	0.443	5.93	0.111	0.774	3.2.1.141	NA
3	0.060	3k1dA	0.459	5.40	0.058	0.751	2.4.1.18	95
4	0.060	1ud2A	0.437	5.44	0.043	0.720	3.2.1.1	NA
5	0.060	1d7fA	0.449	5.55	0.063	0.756	2.4.1.19	NA

	Click on the radio buttons to visualize predicted active site residues.
(a)	Cscore^EC is the confidence score for the Enzyme Commission (EC) number prediction. Cscore^EC 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)	RMSD^a is the RMSD between residues that are structurally aligned by TM-align.
(d)	IDEN^a 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.

Predicted Ligand Binding Sites

Template proteins with similar binding site:

Rank	Cscore^LB	PDB Hit	TM-score	RMSD^a	IDEN^a	Cov.	BS-score	Lig. Name	Download Complex	Predicted binding site residues
1	0.01	1v3mB	0.451	5.64	0.068	0.765	0.41	GAL	complex1.pdb.gz	76,89,107
2	0.01	1v3mA	0.451	5.50	0.058	0.756	0.48	GAL	complex2.pdb.gz	75,76,86,87,88,109
3	0.01	1cgwA	0.447	5.64	0.052	0.760	0.43	MAL	complex3.pdb.gz	76,77,82,83,85
4	0.01	2cxgA	0.446	5.63	0.052	0.760	0.48	GLC	complex4.pdb.gz	103,104,107,108,122
5	0.01	1cgvA	0.446	5.62	0.063	0.760	0.47	MAL	complex5.pdb.gz	92,93,98,99,102,153
6	0.01	1cdgA	0.447	5.63	0.057	0.760	0.47	MAL	complex6.pdb.gz	92,93,94,98,99,102,153

	Click on the radio buttons to visualize predicted binding site and residues.
(a)	Cscore^LB is the confidence score of predicted binding site. Cscore^LB values range in between [0-1]; where a higher score indicates a more reliable ligand-binding site prediction.
(b)	BS-score is a measure of local similarity (sequence & structure) between template binding site and predicted binding site in the query structure. Based on large scale benchmarking analysis, we have observed that a BS-score >1 reflects a significant local match between the predicted and template binding site.
(c)	TM-score is a measure of global structural similarity between query and template protein.
(d)	RMSD^a the RMSD between residues that are structurally aligned by TM-align.
(e)	IDEN^a is the percentage sequence identity in the structurally aligned region.
(f)	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.

[Click result.zip to download all results on this page]

References:
1.	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. In preparation, 2020.