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The two reactions compared are done so using a Tanimoto similarity score (for more information, please see the MACiE FAQ) for the bond changes only. The score maay range from 0 to 1 where 1 indicates that the two reactions are identical at the bond change level and 0 indicates that there are no bond changes in common.


Key

1.0-0.9 0.9-0.8 0.8-0.7 0.7-0.6 0.6-0.5 0.5-0.4 0.4-0.3 0.3-0.2 0.2-0.1 0.1-0.0 =0

Results for Comparison of M0188 and M0255

These two reactions have a combined similarity of 0.59


M0188

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Comparison

M0255

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EC 5.1.3.2
UDP-glucose 4-epimerase
Class EC 1.1.1.1
alcohol dehydrogenase

Image of UDP-galactose

right arrow

Image of UDP-glucose

UDP-galactose
C00052
CHEBI:58439
UDP-glucose
C00029
CHEBI:58367
0

Image of  alcohol

Image of NAD

right arrow

Image of aldehyde or ketone

Image of proton

Image of NADH

alcohol
C00069
CHEBI:30879
NAD
C00003
CHEBI:15846
aldehyde or ketone
C01450
CHEBI:23019
proton
C00080
CHEBI:15378
CHEBI:24636
NADH
C00004
CHEBI:16908

Catalytic CATH Codes

3.40.50.720

Catalytic CATH Codes

3.40.50.720

Active Site



1

Active Site



Catalytic Residues

Type Number Chain Location of Function
Ser 124 A Side Chain
Tyr 149 A Side Chain
Lys 153 A Side Chain
1

Catalytic Residues

Type Number Chain Location of Function
Tyr 152 A Side Chain
Lys 156 A Side Chain
Ser 139 A Side Chain

Organic Cofactors

Type Identity Chain
NAD NAD 340

Organic Cofactors

Type Identity Chain
NAD NAD 850 A

Metal Cofactors

No Associated Metal Cofactors

Metal Cofactors

No Associated Metal Cofactors

Reaction occurs across 2 steps

0.5333

Reaction occurs across 1 steps

Step 1
GIF of Reaction Step M0188.stg01

Tyr149 deprotonates the 4-hydroxide of the substrate, resulting in an elimination of the hydride from the C4 position. The hydride then attacks the NAD cofactor in a nucleophilic addition reaction.
0.54 Step 1
GIF of Reaction Step M0255.stg01

Bulk water initiates the deprotonation of Tyr152 via Lys156, the ribose ring of NAD850. Tyr152 deprotonates the alcohol group, initiating hydride transfer to NAD850.
Step 2
GIF of Reaction Step M0188.stg02

The intermediate undergoes a conformational change before the NAD initiates an elimination of the hydride back to the intermediate, which in turn deprotonates Tyr149.
N/A Step 2
No Step with this number present

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