D-I-TASSER P50120

D-I-TASSER results for P50120

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Summary of the Protein

Uniprot ID: P50120
Protein Name: Retinol-binding protein 2
Gene Name: RBP2

Input Sequence in FASTA format

>P50120 (134 residues)
MTRDQNGTWEMESNENFEGYMKALDIDFATRKIAVRLTQTKVIDQDGDNFKTKTTSTFRN
YDVDFTVGVEFDEYTKSLDNRHVKALVTWEGDVLVCVQKGEKENRGWKQWIEGDKLYLEL
TCGDQVCRQVFKKK

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 DeepPotential. 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	P50120-D1	1-134	134		MTRDQNGTWEMESNENFEGYMKALDIDFATRKIAVRLTQTKVIDQDGDNFKTKTTSTFRNYDVDFTVGVEFDEYTKSLDNRHVKALVTWEGDVLVCVQKGEKENRGWKQWIEGDKLYLELTCGDQVCRQVFKKK

Top 1 final models from D-I-TASSER

Click to view	Rank^a	Download	Estimated TM-score^b
	1	model1.pdb.gz	0.958

(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 DeepPotential, 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	2rcqA	0.99	0.49	0.993	1.000	model1_2rcqA.pdb.gz
2	1lpjA	0.97	0.84	0.586	0.993	model1_1lpjA.pdb.gz
3	1kglA	0.96	1.19	0.560	1.000	model1_1kglA.pdb.gz
4	6e5wA	0.96	0.69	0.508	0.985	model1_6e5wA.pdb.gz
5	3pptA	0.91	1.23	0.354	0.970	model1_3pptA.pdb.gz
6	2qm9A	0.89	1.53	0.371	0.985	model1_2qm9A.pdb.gz
7	5bvtA	0.89	1.62	0.280	0.978	model1_5bvtA.pdb.gz
8	4a60A	0.89	1.77	0.344	0.978	model1_4a60A.pdb.gz
9	4i3bA	0.88	1.61	0.311	0.985	model1_4i3bA.pdb.gz
10	2cbrA	0.88	1.48	0.354	0.970	model1_2cbrA.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:0008289	0.91	lipid binding
GO:0043167	0.60	ion binding
GO:0033293	0.51	monocarboxylic acid binding
GO:0005501	0.50	retinoid 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:0044699	0.96	single-organism process
GO:0009987	0.80	cellular process
GO:0008152	0.74	metabolic process
GO:0044763	0.71	single-organism cellular process
GO:0044710	0.70	single-organism metabolic process
GO:0071704	0.69	organic substance metabolic process
GO:0044238	0.69	primary metabolic process
GO:0044237	0.68	cellular metabolic process
GO:0065007	0.65	biological regulation
GO:0006629	0.63	lipid metabolic process
GO:0044255	0.61	cellular lipid metabolic process
GO:0050789	0.53	regulation of biological process
GO:0044281	0.50	small molecule metabolic process

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	0.98	cell part
GO:0044424	0.97	intracellular part
GO:0044444	0.76	cytoplasmic part
GO:0005829	0.65	cytosol
GO:0043226	0.54	organelle
GO:0044422	0.52	organelle part
GO:0044446	0.51	intracellular organelle part
GO:0043227	0.51	membrane-bounded organelle

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	2vhhC	0.475	4.58	0.033	0.798	3.5.1.6	43
2	0.060	1snzA	0.471	4.51	0.069	0.791	5.1.3.3	NA
3	0.060	1i78A	0.578	3.96	0.055	0.895	3.4.23.49	NA
4	0.060	3b8eC	0.480	4.45	0.034	0.739	3.6.3.9	4,88,91
5	0.060	1qqwB	0.528	4.18	0.063	0.821	1.11.1.6	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	0.86	2rctA	0.991	0.43	0.993	1.000	0.92	RTL	complex1.pdb.gz	39,41,52,54,59,61,63,107,118
2	0.51	3fr4A	0.883	1.65	0.374	0.978	1.08	F8A	complex2.pdb.gz	17,34,37,39,54,56,58,59,61,79,81,107
3	0.49	2nnqA	0.878	1.68	0.374	0.978	1.32	T4B	complex3.pdb.gz	17,34,37,39,52,54,58,63,79,107,109,118,120,129,131
4	0.48	1touA	0.888	1.62	0.374	0.978	1.11	B1V	complex4.pdb.gz	17,20,21,26,34,78,79,81,107,120,129,131
5	0.47	1towA	0.885	1.64	0.374	0.978	1.04	CRZ	complex5.pdb.gz	17,21,39,58,79,81
6	0.47	2qm9A	0.894	1.53	0.371	0.985	1.00	TDZ	complex6.pdb.gz	17,20,21,26,40,54,55,56,61,78,80,129,131
7	0.36	2jn3A	0.839	1.57	0.248	0.933	1.06	JN3	complex7.pdb.gz	17,20,21,24,26,30,34,37,51,57,63,65,85,87,94,96,105,107,109,120,122,127
8	0.07	1ab00	0.874	1.76	0.359	0.978	0.91	III	complex8.pdb.gz	7,8,42,44,46,53,133
9	0.05	2k62A	0.759	2.27	0.256	0.933	0.81	ITL	complex9.pdb.gz	17,20,21,26,34,37,58,120,122,126,128

	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, Qiqige Wuyun, Yang Li, Quancheng Liu, Xiaogen Zhou, Yiheng Zhu, P. Lydia Freddolino, Yang Zhang. Integrating deep learning potentials with I-TASSER for single- and multi-domain protein structure prediction. Submitted. 2023.