Function: Difference between revisions

From MDWiki
Jump to navigationJump to search
No edit summary
No edit summary
 
(38 intermediate revisions by 3 users not shown)
Line 1: Line 1:
__TOC__
The predicted function based on the evolution and structure


=='''Proposed Functions'''==
<font size = "4">'''Hydrolase'''</font>


* Hydrolase Activity


* Magnesium Ion Binding
[[Image:Document18_01.png]]


* N-acylneuraminate-9-phosphatase Activity
Hydrolyase catalyze the hydrosis of the chemical bond between A and B, resulting of 2 simple molecules


* Phosphoglycolate Phosphatase Activity


* Hydrolase
** Catalyze hydrolysis reaction 
** Addition of the hydrogen and hydroxyl ions of water
** Splitting into 2 or more simpler molecules
** EC class 3


[http://amigo.geneontology.org/cgi-bin/amigo/go.cgi?view=details&depth=1&query=0016787 1. Hydrolase Activity]


[http://amigo.geneontology.org/cgi-bin/amigo/go.cgi?view=details&depth=1&query=0000287 2. Magnesium Ion Binding]


[http://amigo.geneontology.org/cgi-bin/amigo/go.cgi?view=details&depth=1&query=0050124 3. N-acylneuraminate-9-phosphatase Activity]
== Function of sulfatases ==


[http://amigo.geneontology.org/cgi-bin/amigo/go.cgi?view=details&depth=1&query=0008967 4. Phosphoglycolate Phosphatase Activity]
Sulfatases are enzymes,which hydrolyse sulfate ester bonds of substrates.  
Most of the family members has shown to contain a highly conserved cystine residue and a bivalent metal binding site.






{| border="1" cellpadding="15" cellspacing="0"
|+'''Table of functions'''
|Catalytic activity
|N-acylneuraminate 9-phosphate + H2O = N-acylneuraminate + phosphate
|-
|Cofactor
|Magnesium (By similarity)
|-
|Enzyme regulation
|Inhibited by vanadate and calcium (By similarity)
|-
|Pathway
|Carbohydrate metabolism; aminosugar metabolism
|-
|Similarity
|Belongs to the haloacid dehalogenase-like hydrolase superfamily. NANP family
|}




Using ProFunc: Ligand-binding template search results for 2gfh.
== Functional site==
MSA data revealed some conserved residues on the sequence. They were mapped on the three dimantional structure.


Structural similarity: 91.5%
[[Image:Zn_Cl_surface]]
 
E-value < 1.00E-06 ( 7.22E-07)
 
Similarity score: 364.02
 
PBD id: 2hi0
 
Name: Hydrolase
 
Title: Crystal structure of putative phosphoglycolate phosphatase (yp_619066.1) from lactobacillus delbrueckii subsp. Bulgaricus atcc baa-365 at 1.51 a resolution
 
Source: Lactobacillus delbrueckii. Bacteria. Gene: yp_619066.1. Expressed in: escherichia coli.
 
Reaction: 2-phosphoglycolate + H2O = glycolate + phosphate
 
=='''GO Terms'''==
Polymer: haloacid dehalogenase-like hydrolase domain containing 4
 
Molecular Function: None
 
Biological Process: None
 
Cellular Component: None
 
 
 
 
 
 
----
 
info
 
N-acetylneuraminic acid phosphatase
 
Homologous to mouse (Mus musculus)
 
Haloacid Dehalogenase Like Hydrolase Domain Containing 4
 
Classified as Hydrolase 
 
[http://www.ebi.ac.uk/thornton-srv/databases/profunc/index.html Infomation on ProFunc] (useful 2gfhA)
 
[http://www.ebi.ac.uk/pdbsum/ Information on PDBsum] (2gfh)
 
From [http://www.ebi.ac.uk/cgi-bin/sumtab?tool=fasta&jobid=fasta-20070515-07270763 FASTA]
most likely function is N-acetylneuraminic acid phosphatase.
 
The haloalkanoate dehalogenase superfamily (HADSF) is one of the largest and most ubiquitous enzyme families identified to date, with over 3,000 members in organisms ranging from bacteria to humans. Remarkable diversity of chemistry and function has emerged through evolution of the HAD catalytic scaffold. Despite the name, the dehalogenases, which catalyze carbon group transfer, represent a minute fraction of the family. All other known catalytic activities are directed at phosphoryl transfer. Numerous proteins from the HADSF are found in each organism (29 in E. coli and 58 in humans, for example) where they perform a diverse collection of novel physiological functions in primary and secondary metabolism, membrane transport, signal transduction, and nucleic acid repair. http://biophysics.bumc.bu.edu/faculty/allen/allenpage/had.htm
 
Haloacid dehalogenases (E.C.3.8.1.2) are members of the haloacid dehalogenase superfamily, which also contains ATPases, phosphatases and epoxide hydrolases. They catalyse the conversion of α-halo-carboxylic acids to the corresponding hydroxyalkanoic acid by nucleophilic attack on the α-carbon by a conserved aspartic acid residue to form an ester intermediate, which is then further hydrolysed by a water molecule. There are three subtypes of haloacid dehalogenase based on substrate specificity; those that can use both enantiomers as substrates, those that act only on the L enantiomer and those that act only on the D enantiomer.


----
----


Press here to go [http://compbio.chemistry.uq.edu.au/mediawiki/index.php/BIOL3004_2007 ''Back'']
Click here to go [http://compbio.chemistry.uq.edu.au/mediawiki/index.php/BIOL3004_2007 ''Back'']

Latest revision as of 09:44, 20 May 2008

The predicted function based on the evolution and structure

Hydrolase


Document18 01.png

Hydrolyase catalyze the hydrosis of the chemical bond between A and B, resulting of 2 simple molecules


  • Hydrolase
    • Catalyze hydrolysis reaction
    • Addition of the hydrogen and hydroxyl ions of water
    • Splitting into 2 or more simpler molecules
    • EC class 3


Function of sulfatases

Sulfatases are enzymes,which hydrolyse sulfate ester bonds of substrates. Most of the family members has shown to contain a highly conserved cystine residue and a bivalent metal binding site.



Functional site

MSA data revealed some conserved residues on the sequence. They were mapped on the three dimantional structure.

File:Zn Cl surface


Click here to go Back