D-I-TASSER Q9P2W9

D-I-TASSER results for Q9P2W9

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

Summary of the Protein

Uniprot ID: Q9P2W9
Protein Name: Syntaxin-18
Gene Name: STX18

Input Sequence in FASTA format

>Q9P2W9 (335 residues)
MAVDITLLFRASVKTVKTRNKALGVAVGGGVDGSRDELFRRSPRPKGDFSSRAREVISHI
GKLRDFLLEHRKDYINAYSHTMSEYGRMTDTERDQIDQDAQIFMRTCSEAIQQLRTEAHK
EIHSQQVKEHRTAVLDFIEDYLKRVCKLYSEQRAIRVKRVVDKKRLSKLEPEPNTKTRES
TSSEKVSQSPSKDSEENPATEERPEKILAETQPELGTWGDGKGEDELSPEEIQMFEQENQ
RLIGEMNSLFDEVRQIEGRVVEISRLQEIFTEKVLQQEAEIDSIHQLVVGATENIKEGNE
DIREAIKNNAGFRVWILFFLVMCSFSLLFLDWYDS

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	Q9P2W9-D1	1-335	335		MAVDITLLFRASVKTVKTRNKALGVAVGGGVDGSRDELFRRSPRPKGDFSSRAREVISHIGKLRDFLLEHRKDYINAYSHTMSEYGRMTDTERDQIDQDAQIFMRTCSEAIQQLRTEAHKEIHSQQVKEHRTAVLDFIEDYLKRVCKLYSEQRAIRVKRVVDKKRLSKLEPEPNTKTRESTSSEKVSQSPSKDSEENPATEERPEKILAETQPELGTWGDGKGEDELSPEEIQMFEQENQRLIGEMNSLFDEVRQIEGRVVEISRLQEIFTEKVLQQEAEIDSIHQLVVGATENIKEGNEDIREAIKNNAGFRVWILFFLVMCSFSLLFLDWYDS

Top 1 final models from D-I-TASSER

Click to view	Rank^a	Download	Estimated TM-score^b
	1	model1.pdb.gz	0.5379

(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	3c98B	0.57	2.81	0.137	0.633	model1_3c98B.pdb.gz
2	2xheB	0.50	3.04	0.100	0.573	model1_2xheB.pdb.gz
3	1fioA	0.49	3.03	0.095	0.555	model1_1fioA.pdb.gz
4	7d7nA	0.46	5.61	0.039	0.681	model1_7d7nA.pdb.gz
5	4hkaA	0.46	5.14	0.035	0.636	model1_4hkaA.pdb.gz
6	5zi1A	0.45	5.09	0.066	0.618	model1_5zi1A.pdb.gz
7	2c9kA	0.44	5.29	0.054	0.633	model1_2c9kA.pdb.gz
8	3e08A	0.44	4.03	0.047	0.561	model1_3e08A.pdb.gz
9	4pw8A	0.44	4.69	0.052	0.591	model1_4pw8A.pdb.gz
10	2noxB	0.43	4.09	0.026	0.546	model1_2noxB.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:1901363	0.29	heterocyclic compound binding
GO:0097159	0.29	organic cyclic compound binding
GO:0019904	0.28	protein domain specific binding
GO:0005484	0.24	SNAP receptor activity
GO:0000149	0.23	SNARE binding
GO:0036094	0.22	small molecule binding
GO:0035639	0.21	purine ribonucleoside triphosphate binding
GO:0032555	0.21	purine ribonucleotide binding
GO:0032550	0.21	purine ribonucleoside binding
GO:0003824	0.15	catalytic activity
GO:0043167	0.11	ion binding

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:0006810	1.00	transport
GO:0006890	0.99	retrograde vesicle-mediated transport, Golgi to ER
GO:0046907	0.96	intracellular transport
GO:0006888	0.95	ER to Golgi vesicle-mediated transport

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:0044444	1.00	cytoplasmic part
GO:0043231	1.00	intracellular membrane-bounded organelle
GO:0031201	0.99	SNARE complex
GO:0005783	0.99	endoplasmic reticulum

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	3g61A	0.423	6.07	0.050	0.675	3.6.3.44	NA
2	0.060	1jqnA	0.373	5.66	0.071	0.549	4.1.1.31	NA
3	0.060	1jtnA	0.194	5.98	0.046	0.304	3.2.1.17	NA
4	0.060	2hqmA	0.357	6.51	0.066	0.591	1.8.1.7	123
5	0.060	3cskA	0.364	7.03	0.052	0.648	3.4.14.4	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	2nw8A	0.442	4.06	0.050	0.558	0.17	HEM	complex1.pdb.gz	153,156,160
2	0.01	3e08H	0.445	3.94	0.048	0.558	0.15	HEM	complex2.pdb.gz	63,66,254,260
3	0.01	3bk9E	0.445	3.94	0.051	0.558	0.21	HEM	complex3.pdb.gz	84,248,252,256
4	0.01	3g60A	0.424	6.06	0.050	0.675	0.14	0JZ	complex4.pdb.gz	217,250,251,254,257
5	0.01	3nz4A	0.387	5.88	0.069	0.594	0.12	TCA	complex5.pdb.gz	297,303,304
6	0.01	3bk9C	0.444	3.95	0.048	0.558	0.18	HEM	complex6.pdb.gz	70,94,97,147,271
7	0.01	3e08G	0.444	4.03	0.047	0.561	0.15	HEM	complex7.pdb.gz	93,253,258
8	0.01	2nwbA	0.403	4.78	0.037	0.537	0.19	HEM	complex8.pdb.gz	63,67,70,148,149
9	0.01	3g61B	0.424	6.08	0.050	0.678	0.17	0JZ	complex9.pdb.gz	254,258,261,262,265

	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.