D-I-TASSER P19961

D-I-TASSER results for P19961

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

Summary of the Protein

Uniprot ID: P19961
Protein Name: Alpha-amylase 2B
Gene Name: AMY2B

Input Sequence in FASTA format

>P19961 (511 residues)
MKFFLLLFTIGFCWAQYSPNTQQGRTSIVHLFEWRWVDIALECERYLAPKGFGGVQVSPP
NENVAIHNPFRPWWERYQPVSYKLCTRSGNEDEFRNMVTRCNNVGVRIYVDAVINHMSGN
AVSAGTSSTCGSYFNPGSRDFPAVPYSGWDFNDGKCKTGSGDIENYNDATQVRDCRLVGL
LDLALEKDYVRSKIAEYMNHLIDIGVAGFRLDASKHMWPGDIKAILDKLHNLNSNWFPAG
SKPFIYQEVIDLGGEPIKSSDYFGNGRVTEFKYGAKLGTVIRKWNGEKMSYLKNWGEGWG
FMPSDRALVFVDNHDNQRGHGAGGASILTFWDARLYKMAVGFMLAHPYGFTRVMSSYRWP
RQFQNGNDVNDWVGPPNNNGVIKEVTINPDTTCGNDWVCEHRWRQIRNMVNFRNVVDGQP
FTNWYDNGSNQVAFGRGNRGFIVFNNDDWTFSLTLQTGLPAGTYCDVISGDKINGNCTGI
KIYVSDDGKAHFSISNSAEDPFIAIHAESKL

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	P19961-D1	1-395	395		MKFFLLLFTIGFCWAQYSPNTQQGRTSIVHLFEWRWVDIALECERYLAPKGFGGVQVSPPNENVAIHNPFRPWWERYQPVSYKLCTRSGNEDEFRNMVTRCNNVGVRIYVDAVINHMSGNAVSAGTSSTCGSYFNPGSRDFPAVPYSGWDFNDGKCKTGSGDIENYNDATQVRDCRLVGLLDLALEKDYVRSKIAEYMNHLIDIGVAGFRLDASKHMWPGDIKAILDKLHNLNSNWFPAGSKPFIYQEVIDLGGEPIKSSDYFGNGRVTEFKYGAKLGTVIRKWNGEKMSYLKNWGEGWGFMPSDRALVFVDNHDNQRGHGAGGASILTFWDARLYKMAVGFMLAHPYGFTRVMSSYRWPRQFQNGNDVNDWVGPPNNNGVIKEVTINPDTTCGN
2	P19961-D2	396-511	116		DWVCEHRWRQIRNMVNFRNVVDGQPFTNWYDNGSNQVAFGRGNRGFIVFNNDDWTFSLTLQTGLPAGTYCDVISGDKINGNCTGIKIYVSDDGKAHFSISNSAEDPFIAIHAESKL

Top 1 final models from D-I-TASSER

Click to view	Rank^a	Download	Estimated TM-score^b
	1	model1.pdb.gz	0.88

(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	3blkA	0.97	0.49	0.976	0.969	model1_3blkA.pdb.gz
2	6m4kA	0.94	1.22	0.559	0.953	model1_6m4kA.pdb.gz
3	1viwA	0.90	1.02	0.536	0.916	model1_1viwA.pdb.gz
4	1aqmA	0.84	1.70	0.472	0.867	model1_1aqmA.pdb.gz
5	1bagA	0.74	2.91	0.202	0.808	model1_1bagA.pdb.gz
6	1qhoA	0.72	3.71	0.176	0.838	model1_1qhoA.pdb.gz
7	6wniA	0.72	3.73	0.149	0.840	model1_6wniA.pdb.gz
8	4jclA	0.72	3.86	0.167	0.840	model1_4jclA.pdb.gz
9	1cygA	0.71	3.68	0.169	0.832	model1_1cygA.pdb.gz
10	2dijA	0.71	3.79	0.177	0.834	model1_2dijA.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:0003824	1.00	catalytic activity
GO:0004556	0.99	alpha-amylase activity
GO:0043167	0.61	ion binding
GO:0046872	0.59	metal ion binding
GO:0005509	0.56	calcium 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:0008152	0.85	metabolic process
GO:0071704	0.82	organic substance metabolic process
GO:0044238	0.82	primary metabolic process
GO:0005975	0.76	carbohydrate metabolic process
GO:0044699	0.59	single-organism process
GO:0009987	0.53	cellular 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:0044421	0.89	extracellular region part
GO:0005615	0.78	extracellular space
GO:0044464	0.76	cell part
GO:0043226	0.64	organelle
GO:0043227	0.63	membrane-bounded organelle
GO:0044424	0.58	intracellular part
GO:0031988	0.53	membrane-bounded vesicle
GO:0070062	0.52	extracellular exosome

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	0.438	1ud2A	0.688	3.70	0.139	0.793	3.2.1.1	116
2	0.399	1amyA	0.612	3.46	0.143	0.699	3.2.1.1	116
3	0.247	1bvnP	0.962	0.80	0.867	0.971	3.2.1.1	NA
4	0.227	1clvA	0.907	0.95	0.539	0.918	3.2.1.1	255
5	0.215	1aqhA	0.840	1.70	0.472	0.867	3.2.1.1	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	0.70	1xd1A	0.966	0.59	0.986	0.971	1.00	6SA	complex1.pdb.gz	73,74,77,78,210,212,213,215,216,248,250,314,315,320,321,322
2	0.64	2qv4A	0.965	0.64	0.986	0.971	1.34	QV4	complex2.pdb.gz	66,73,74,77,78,116,119,120,121,122,177,178,179,180,210,212,213,216
3	0.49	1xv80	0.962	0.69	0.978	0.969	1.67	III	complex3.pdb.gz	162,164,165,167,252,253,254,284,288,291,293,298,299,300,365,366
4	0.44	1bvn0	0.962	0.80	0.867	0.971	1.32	III	complex4.pdb.gz	73,74,77,164,166,167,177,178,215,216,248,250,252,253,254,255,322,324,325,367,371,372
5	0.14	1dhk1	0.955	1.02	0.869	0.965	1.28	III	complex5.pdb.gz	73,74,77,116,177,178,180,212,213,215,216,248,250,252,254,255,271,313,315,318,319,326
6	0.09	1tmq0	0.905	0.91	0.541	0.916	0.81	III	complex6.pdb.gz	73,74,77,78,210,212,248,250,314,315

	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.