D-I-TASSER P43116

D-I-TASSER results for P43116

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

Summary of the Protein

Uniprot ID: P43116
Protein Name: Prostaglandin E2 receptor EP2 subtype
Gene Name: PTGER2

Input Sequence in FASTA format

>P43116 (358 residues)
MGNASNDSQSEDCETRQWLPPGESPAISSVMFSAGVLGNLIALALLARRWRGDVGCSAGR
RSSLSLFHVLVTELVFTDLLGTCLISPVVLASYARNQTLVALAPESRACTYFAFAMTFFS
LATMLMLFAMALERYLSIGHPYFYQRRVSRSGGLAVLPVIYAVSLLFCSLPLLDYGQYVQ
YCPGTWCFIRHGRTAYLQLYATLLLLLIVSVLACNFSVILNLIRMHRRSRRSRCGPSLGS
GRGGPGARRRGERVSMAEETDHLILLAIMTITFAVCSLPFTIFAYMNETSSRKEKWDLQA
LRFLSINSIIDPWVFAILRPPVLRLMRSVLCCRISLRTQDATQTSCSTQSDASKQADL

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	P43116-D1	1-193	193		MGNASNDSQSEDCETRQWLPPGESPAISSVMFSAGVLGNLIALALLARRWRGDVGCSAGRRSSLSLFHVLVTELVFTDLLGTCLISPVVLASYARNQTLVALAPESRACTYFAFAMTFFSLATMLMLFAMALERYLSIGHPYFYQRRVSRSGGLAVLPVIYAVSLLFCSLPLLDYGQYVQYCPGTWCFIRHGR
2	P43116-D2	194-358	165		TAYLQLYATLLLLLIVSVLACNFSVILNLIRMHRRSRRSRCGPSLGSGRGGPGARRRGERVSMAEETDHLILLAIMTITFAVCSLPFTIFAYMNETSSRKEKWDLQALRFLSINSIIDPWVFAILRPPVLRLMRSVLCCRISLRTQDATQTSCSTQSDASKQADL

Top 1 final models from D-I-TASSER

Click to view	Rank^a	Download	Estimated TM-score^b
	1	model1.pdb.gz	0.84

(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	2ks9A	0.76	3.44	0.145	0.885	model1_2ks9A.pdb.gz
2	2ziyA	0.75	3.47	0.116	0.891	model1_2ziyA.pdb.gz
3	4zwjA	0.75	2.77	0.115	0.841	model1_4zwjA.pdb.gz
4	3capA	0.75	2.64	0.124	0.832	model1_3capA.pdb.gz
5	6me6A	0.74	3.81	0.164	0.885	model1_6me6A.pdb.gz
6	6m9tA	0.73	3.12	0.286	0.827	model1_6m9tA.pdb.gz
7	5ztyA	0.72	3.65	0.130	0.858	model1_5ztyA.pdb.gz
8	6i9kA	0.72	2.86	0.141	0.813	model1_6i9kA.pdb.gz
9	4iaqA	0.71	3.27	0.158	0.830	model1_4iaqA.pdb.gz
10	5nddA	0.71	3.67	0.132	0.852	model1_5nddA.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:0038023	1.00	signaling receptor activity
GO:0004888	0.99	transmembrane signaling receptor activity
GO:0004930	0.98	G-protein coupled receptor activity
GO:0004954	0.50	prostanoid receptor 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:0065007	0.97	biological regulation
GO:0050789	0.96	regulation of biological process
GO:0050794	0.93	regulation of cellular process
GO:0007165	0.89	signal transduction
GO:0009987	0.86	cellular process
GO:0007186	0.86	G-protein coupled receptor signaling pathway
GO:0044699	0.78	single-organism process
GO:0050896	0.74	response to stimulus
GO:0044763	0.69	single-organism cellular process
GO:0007187	0.68	G-protein coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger
GO:0007188	0.66	adenylate cyclase-modulating G-protein coupled receptor signaling pathway
GO:0065008	0.61	regulation of biological quality
GO:0007189	0.58	adenylate cyclase-activating G-protein coupled receptor signaling pathway
GO:0042592	0.53	homeostatic process
GO:0006950	0.52	response to stress
GO:0007204	0.51	positive regulation of cytosolic calcium ion concentration
GO:0051716	0.50	cellular response to stimulus
GO:0006952	0.50	defense response

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:0044464	0.99	cell part
GO:0044425	0.90	membrane part
GO:0016021	0.88	integral component of membrane
GO:0044459	0.87	plasma membrane part
GO:0005887	0.86	integral component of plasma 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	1q5nA	0.408	5.38	0.047	0.578	5.5.1.2	NA
2	0.060	1b8fA	0.441	6.00	0.056	0.679	4.3.1.3	NA
3	0.060	3e04D	0.414	6.63	0.060	0.665	4.2.1.2	NA
4	0.060	3d4sA	0.680	3.87	0.168	0.816	3.2.1.17	NA
5	0.060	2occN	0.480	4.72	0.050	0.634	1.9.3.1	40

	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	0.03	2rh1A	0.685	3.93	0.170	0.824	0.53	CLR	complex1.pdb.gz	33,37,40,41,83
2	0.01	3htfA	0.207	5.68	0.031	0.313	0.50	JZ6	complex2.pdb.gz	35,43,76,80
3	0.01	1c6cA	0.197	5.86	0.042	0.304	0.47	AR	complex3.pdb.gz	76,78,79,82,308
4	0.01	1l84A	0.195	5.64	0.035	0.293	0.43	BNZ	complex4.pdb.gz	35,79,82
5	0.01	3gupB	0.194	5.58	0.049	0.293	0.46	0PY	complex5.pdb.gz	37,75,78,79,310
6	0.01	3dn2A	0.208	5.70	0.031	0.316	0.41	BBF	complex6.pdb.gz	40,43,81,82,309,312
7	0.01	148lE	0.195	5.63	0.035	0.293	0.45	III	complex7.pdb.gz	37,38,39,40,78,81,82,83,84
8	0.01	1c6fA	0.197	5.86	0.049	0.304	0.56	AR	complex8.pdb.gz	39,75,82
9	0.01	1c6dA	0.194	5.66	0.035	0.293	0.47	KR	complex9.pdb.gz	38,76,80,306
10	0.01	225lA	0.199	5.78	0.056	0.307	0.49	PXY	complex10.pdb.gz	76,78,82,305

	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.