D-I-TASSER O60575

D-I-TASSER results for O60575

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

Summary of the Protein

Uniprot ID: O60575
Protein Name: Serine protease inhibitor Kazal-type 4
Gene Name: SPINK4

Input Sequence in FASTA format

>O60575 (86 residues)
MAVRQWVIALALAALLVVDREVPVAAGKLPFSRMPICEHMVESPTCSQMSNLVCGTDGLT
YTNECQLCLARIKTKQDIQIMKDGKC

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	O60575-D1	1-86	86		MAVRQWVIALALAALLVVDREVPVAAGKLPFSRMPICEHMVESPTCSQMSNLVCGTDGLTYTNECQLCLARIKTKQDIQIMKDGKC

Top 1 final models from D-I-TASSER

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Click to view	Rank^a	Download	Estimated TM-score^b
	1	model1.pdb.gz	0.4981

(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

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

Rank	PDB Hit	TM-score	RMSD^a	IDEN^a	Cov.	Download Alignment
1	1pceA	0.55	2.26	0.633	0.651	model1_1pceA.pdb.gz
2	2leoA	0.54	1.98	0.306	0.663	model1_2leoA.pdb.gz
3	4c20A	0.52	3.98	0.050	0.907	model1_4c20A.pdb.gz
4	1z7kB	0.52	2.01	0.389	0.628	model1_1z7kB.pdb.gz
5	1fuiA	0.52	4.05	0.061	0.919	model1_1fuiA.pdb.gz
6	1uvgA	0.51	1.95	0.333	0.628	model1_1uvgA.pdb.gz
7	3a9rA	0.51	4.40	0.024	0.942	model1_3a9rA.pdb.gz
8	1hptA	0.51	2.39	0.393	0.639	model1_1hptA.pdb.gz
9	1turA	0.50	2.11	0.286	0.651	model1_1turA.pdb.gz
10	1tgsI	0.49	2.28	0.429	0.628	model1_1tgsI.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:0004857	0.84	enzyme inhibitor activity
GO:0004866	0.83	endopeptidase inhibitor activity
GO:0004867	0.82	serine-type endopeptidase inhibitor 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	0.85	biological regulation
GO:0050789	0.84	regulation of biological process
GO:0050794	0.82	regulation of cellular process
GO:0048519	0.77	negative regulation of biological process
GO:0080090	0.76	regulation of primary metabolic process
GO:0031323	0.76	regulation of cellular metabolic process
GO:0060255	0.75	regulation of macromolecule metabolic process
GO:0048523	0.75	negative regulation of cellular process
GO:0050790	0.71	regulation of catalytic activity
GO:0051336	0.70	regulation of hydrolase activity
GO:0032268	0.70	regulation of cellular protein metabolic process
GO:0031324	0.70	negative regulation of cellular metabolic process
GO:0010605	0.70	negative regulation of macromolecule metabolic process
GO:0051346	0.69	negative regulation of hydrolase activity
GO:0045861	0.69	negative regulation of proteolysis
GO:0044699	0.69	single-organism process
GO:0052548	0.68	regulation of endopeptidase activity
GO:0010466	0.68	negative regulation of peptidase activity
GO:1902572	0.67	negative regulation of serine-type peptidase activity
GO:1900003	0.66	regulation of serine-type endopeptidase activity
GO:0010951	0.66	negative regulation of endopeptidase activity
GO:0009987	0.65	cellular process
GO:0044763	0.54	single-organism cellular process
GO:1900004	0.51	negative regulation of serine-type endopeptidase activity
GO:0043900	0.51	regulation of multi-organism process
GO:0032502	0.50	developmental 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:0005576	1.00	extracellular region
GO:0044464	0.94	cell part
GO:0044424	0.80	intracellular part
GO:0044421	0.76	extracellular region part
GO:0043227	0.71	membrane-bounded organelle
GO:0044444	0.67	cytoplasmic part
GO:0005615	0.65	extracellular space
GO:0031982	0.64	vesicle
GO:0043231	0.63	intracellular membrane-bounded organelle
GO:0031988	0.61	membrane-bounded vesicle
GO:0097708	0.57	intracellular vesicle
GO:0030141	0.54	secretory granule

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

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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	1ah7A	0.445	4.37	0.062	0.861	3.1.4.3	19
2	0.060	1fuiA	0.518	4.05	0.061	0.919	5.3.1.25	NA
3	0.060	1kqfA	0.381	4.43	0.024	0.767	1.2.1.2	NA
4	0.060	1z1lA	0.443	3.51	0.096	0.744	3.1.4.17	NA
5	0.060	1hm7B	0.441	4.23	0.052	0.837	4.2.3.7 4.6.1.5	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

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Template proteins with similar binding site:

Click to view	Rank	Cscore^LB	PDB Hit	TM-score	RMSD^a	IDEN^a	Cov.	BS-score	Lig. Name	Download Complex	Predicted binding site residues
	1	0.26	1tgs1	0.489	2.28	0.429	0.628	1.05	III	complex1.pdb.gz	45,46,47,48,49,50,51,60,62,63
	2	0.01	1kqfA	0.381	4.43	0.024	0.767	0.43	SF4	complex2.pdb.gz	54,56,57,59,60,61

	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.