Difference between revisions of "Sequence-based predictions TSD"
(→Secondary structure) |
|||
Line 43: | Line 43: | ||
== Transmembrane helices == |
== Transmembrane helices == |
||
− | Proteins: [http://www.uniprot.org/uniprot/P35462 P35462 ], [http://www.uniprot.org/uniprot/Q9YDF8 Q9YDF8 ], [http://www.uniprot.org/uniprot/P47863 P47863] |
+ | Proteins: Dopamine D3 receptor [http://www.uniprot.org/uniprot/P35462 P35462 ], KvAP [http://www.uniprot.org/uniprot/Q9YDF8 Q9YDF8 ], AQP-4 [http://www.uniprot.org/uniprot/P47863 P47863] |
== Signal peptides == |
== Signal peptides == |
||
− | Proteins: [http://www.uniprot.org/uniprot/P02768 P02768], [http://www.uniprot.org/uniprot/P11279 P11279], [http://www.uniprot.org/uniprot/P47863 P47863] |
+ | Proteins: Serum albumin [http://www.uniprot.org/uniprot/P02768 P02768], LAMP-1 [http://www.uniprot.org/uniprot/P11279 P11279], AQP-4 [http://www.uniprot.org/uniprot/P47863 P47863] |
<br> |
<br> |
||
− | HEXA LAMP-1 and |
+ | HEXA LAMP-1 and Serum albumin contain a signal peptide. HEXA has an assigned peptide between position 1 and 22, LAMP-1 between 1 and 28 and Serum albumin between position 1 and 18.<br> |
− | LAMP-1 is a membrane protein which passes the membrane with one helix. |
+ | LAMP-1 is a membrane protein which passes the membrane with one helix. Serum albumin, the main protein of plasma, is a secreted extracellular protein. |
AQP-4 is a multi-pass membrane protein which forms a waterspecific channel and functions in transport. |
AQP-4 is a multi-pass membrane protein which forms a waterspecific channel and functions in transport. |
||
Line 79: | Line 79: | ||
</figtable> |
</figtable> |
||
− | The <xr id="tbl:signalp"/> displays the results of the SignalP predictions. HEXA LAMP-1 and |
+ | The <xr id="tbl:signalp"/> displays the results of the SignalP predictions. HEXA, LAMP-1 and Serum albumin are correctly predicted one signal peptide at the beginning of the sequence and AQP-4 is identified as a mature protein. |
<br style="clear:both;"> |
<br style="clear:both;"> |
Revision as of 16:51, 14 May 2012
Thor: He's my brother
Natasha Romanoff: He killed 80 people in 2 days
Thor: ...He's adopted
If not noted otherwise, the sequence for all predictions is the HEXA Reference sequence. A protocol for this task can be found here.
Contents
Secondary structure
Proteins: Ribonuclease inhibitor P10775 , CutA Q9X0E6 , CAM-PRP catalytic subunit Q08209
Disorder
Transmembrane helices
Proteins: Dopamine D3 receptor P35462 , KvAP Q9YDF8 , AQP-4 P47863
Signal peptides
Proteins: Serum albumin P02768, LAMP-1 P11279, AQP-4 P47863
HEXA LAMP-1 and Serum albumin contain a signal peptide. HEXA has an assigned peptide between position 1 and 22, LAMP-1 between 1 and 28 and Serum albumin between position 1 and 18.
LAMP-1 is a membrane protein which passes the membrane with one helix. Serum albumin, the main protein of plasma, is a secreted extracellular protein.
AQP-4 is a multi-pass membrane protein which forms a waterspecific channel and functions in transport.
The prediction of the displayed results was performed with SignalP version 4.0.
SignalP employs 3 main scores for the prediction of signal peptides, C, S and Y. The S-score stands for the actual signal peptide prediction, with high scores indicating that the corresponding amino acid is part of a signal peptide, and low scores indicating that the amino acid is part of a mature protein.
The C-score is the cleavage score, which indicates the best cleavage cite when significantly high. (When a cleavage site position is referred to by a single number, the number indicates the first residue in the mature protein.)
Y-max is a derivative of the C-score combined with the S-score calculated to give a better cleavage site prediction than the raw C-score alone.
There are two additional scores reported in the SignalP output, namely the S-mean and the D-score. The S-mean is the average of the S-score, ranging from the N-terminal amino acid to the amino acid assigned with the highest Y-max score. The D-score is implemented as a weighted average of the S-mean and the Y-max scores.
For non-secretory proteins all scores are supposed to be very low.
<figtable id="tbl:signalp">
Table : Signal peptide predictions. |
</figtable>
The <xr id="tbl:signalp"/> displays the results of the SignalP predictions. HEXA, LAMP-1 and Serum albumin are correctly predicted one signal peptide at the beginning of the sequence and AQP-4 is identified as a mature protein.
GO terms
GOpet
<figtable id="tab:gopetgo">
GO-Term ID | Type | Confidence | GO-Term description |
---|---|---|---|
GO:0003824 | Molecular function | 97% | catalytic activity |
GO:0004563 | Molecular function | 96% | beta-N-acetylhexosaminidase activity |
GO:0015929 | Molecular function | 96% | hexosaminidase activity |
GO:0016787 | Molecular function | 96% | hydrolase activity |
GO:0016798 | Molecular function | 96% | hydrolase activity acting on glycosyl bonds |
GO:0004553 | Molecular function | 96% | hydrolase activity hydrolyzing O-glycosyl compounds |
GO:0016799 | Molecular function | 77% | hydrolase activity hydrolyzing N-glycosyl compounds |
GO:0046982 | Molecular function | 61% | protein heterodimerization activity |
Table TODO: </figtable>