SitesBLAST

K47 (= K47) mutation to M: 17-fold increase in Km for acetyl-CoA and 14-fold decrease in catalytic activity.; mutation to R: 7-fold increase in Km for acetyl-CoA.
E111 (= E111) mutation to G: No activity with acetyl-CoA but catalyzes an acyltransferase reaction using succinyl-CoA and homoserine.
C142 (= C142) mutation C->A,S: Lack of activity.
K163 (= K163) binding substrate; mutation to M: 13-fold increase in Km for homoserine.
S192 (= S192) binding substrate; mutation to A: 5-fold increase in Km for homoserine.
H235 (= H235) mutation H->A,N,Q: Lack of activity.
E237 (= E237) mutation to A: 65-fold decrease in catalytic activity.; mutation to D: 6-fold decrease in catalytic activity.; mutation to Q: 19-fold decrease in catalytic activity.
R249 (= R249) binding substrate; mutation to M: 64-fold increase in Km for homoserine and 10-fold decrease in catalytic activity.

2vdjA Crystal structure of homoserine o-acetyltransferase (meta) from bacillus cereus with homoserine (see paper)
56% identity, 90% coverage: 18:296/309 of query aligns to 2:267/268 of 2vdjA

query
sites
2vdjA

E

E

N

N

I

I

F

F

V

V

M

M

D

T

Y

K

E

E

R

R

S

A

L

E

K

T

Q

Q

D

D

I

I

R

R

P

A

L

L

K

K

I

I

I

A

I

I

M

L

N

N

L

L

M

M

P

P

T

T

K

K

Q

Q

A

E

T

T

E

E

L

A

Q

Q

L

L

R

R

S

L

L

I

S

G

N

N

T

T

P

P

L

L

Q

Q

V

L

D

D

I

V

T

H

F

L

L

L

K

H

T

M

E

E

T

S

H

-

D

-

A

-

Q

-

N

-

E

-

S

-

Q

-

T

-

H

-

M

-

E

-

T

S

F

F

Y

Y

T

K

I

T

F

F

P

R

E

D

I

I

K

E

Q

N

Q

E

Y

K

F

F

D

D

G

G

L

L

I

I

T

T

G

G

A

A

P

P

V

V

E

E

T

T

L

L

D

S

F

F

E

E

V

V

D

D

Y

Y

W

W

P

E

E

E

L

L

V

K

E

R

I

I

M

M

E

E

W

Y

S

S

K

K

T

T

H

N

V

V

T

T

S

S

T

T

F

L

H

H

I

I

C

C

W

W

A

G

A

A

Q

Q

A

A

G

G

L

L

Y

Y

Y

H

H

H

Y

Y

G

G

V

V

R

Q

K

K

E

Y

L

P

L

L

D

K

E

E

K

K

I

M

F

F

G

G

I

V

F

F

Q

E

H

H

H

E

T

V

I

R

H

E

R

Q

K

H

T

V

P

K

L

L

I

L

R

Q

G

G

F

F

D

D

D

E

V

L

F

F

N

F

A

A

P

V

H

H

S
|
S

R

R

H

H

S

T

Q

E

I

V

V

R

R

E

E

S

D

D

V

I

E

R

K

E

N

V

P

K

E

E

L

L

T

T

I

L

L

L

A

A

D

N

S

S

E

E

A

A

G

G

P

V

F

H

I

L

I

V

I

I

A

G

K

Q

E

E

G

G

R

R

Q

Q

I

V

F

F

V

A

T

L

G

G

H
|
H

P

S

E

E

Y

Y

D

S

V

C

L

D

T

T

L

L

D

K

G

Q

E
|
E

Y

Y

K

E

R
|
R

D

D

L

R

A

D

K

K

G

G

M

L

D

-

N

N

V

I

P

D

F

V

P

P

N

K

R

N

Y

Y

Y

F

K

K

D

H

D

D

K

N

P

P

E

N

L

E

G

K

P

P

V

L

K

V

S

R

W

W

R

R

C

S

H

H

A

G

N

N

T

L

L

L

Y

F

T

S

N

N

W

W

L

L

N

N

Y

Y

V

V

Y

Y

Q

Q

binding l-homoserine: S164 (= S192), H207 (= H235), E218 (= E246), R221 (= R249)

P07623 Homoserine O-succinyltransferase; HST; Homoserine transsuccinylase; HTS; EC 2.3.1.46 from Escherichia coli (strain K12) (see 4 papers)
48% identity, 97% coverage: 1:301/309 of query aligns to 1:300/309 of P07623

query
sites
P07623

M
|
M

P

P

I

I

R

R

I

V

N

P

A

D

D

E

L

L

P

P

A

A

K

V

K

N

I

F

L

L

E

R

H

E

E

E

N

N

I

V

F

F

V

V

M

M

D

T

Y

T

E

S

R

R

S

A

L

S

K

G

Q

Q

D

E

I

I

R

R

P

P

L

L

K

K

I

V

I

L

I

I

M

L

N

N

L

L

M

M

P

P

T
x
K

K
|
K

Q

I

A

E

T

T

E

E

L

N

Q

Q

L

F

L

L

R

R

S

L

L

L

S

S

N

N

T

S

P

P

L

L

Q

Q

V

V

D

D

I

I

T

Q

F

L

L

L

K

R

T

I

E

D

T

S

H

R

D

E

A

S

Q

R

N

N

E

T

S

P

Q

A

T

E

H

H

M

L

E

N

T

N

F

F

Y

Y

T
x
C

I

N

F

F

P

E

E

D

I

I

K

Q

Q

D

Q

Q

Y

N

F

F

D

D

G

G

L

L

I

I

I

V

T

T

G

G

A

A

P

P

V

L

E

G

T

L

L

V

D

E

F

F

E

N

E

D

V

V

D

A

Y

Y

W

W

P

P

E

Q

L

I

V

K

E

Q

I

V

M

L

E

E

W

W

S

S

K

K

T

D

H

H

V

V

T

T

S

S

T

T

F

L

H

F

I

V

C
|
C

W

W

A

A

A

V

Q

Q

A

A

G

A

L

L

Y

N

Y

I

H

L

Y

Y

G

G

V

I

R

P

K
|
K

E

Q

L

T

L

R

D

T

E

E

K

K

I

L

F

S

G

G

I

V

F

Y

Q

E

H

H

T

I

I

L

H

H

R

P

K

H

T

A

P

L

L

L

I

T

R

R

G

G

F

F

D

D

V

S

F

F

N

L

A

A

P

P

H

H

S

S

R
|
R

H

Y

S

A

Q

D

I

F

V

P

R

A

E

A

D

L

V

I

E

R

K

D

N

Y

P

T

E

D

L

L

T

E

I

I

L

L

A

A

D

E

S

T

E

E

A

G

G

D

P

A

F

Y

I

L

I

F

I

A

A

S

K

K

E

D

G

K

R

R

Q

I

I

A

F

F

V

V

T

T

G

G

H
|
H

P

P

E
|
E

Y
|
Y

D

D

V

A

L

Q

T

T

L

L

D

A

G

Q

E
|
E

Y

F

K

F

R
|
R

D

D

L

V

A

E

K

A

G

G

M

L

D

D

-

P

N

D

V

V

P

P

F

Y

P

-

N

-

R

N

Y

Y

Y

F

K

P

D

H

D

N

K

D

P

P

E

Q

L

N

G

T

P

P

V

R

K

A

S

S

W

W

R

R

C

S

H

H

A

G

N

N

T

L

L

L

Y

F

T

T

N

N

W

W

L

L

N

N

Y

Y

V

V

Y

Y

Q

Q

M

I

T

T

T

P

Y

Y

D

D

M1 (= M1) modified: Initiator methionine, Removed
K46 (≠ T46) mutation to A: 16-fold decrease in Km for L-homoserine. 32-fold decrease in catalytic activity.; mutation to L: 6-fold increase in Km for L-homoserine and in Km for succinyl-CoA. Slight increase in catalytic activity.; mutation to R: Slight decrease in catalytic activity.
KK 46:47 (≠ TK 46:47) mutation to AA: Lack of activity.
K47 (= K47) mutation to A: 22-fold decrease in Km for L-homoserine. Almost loss of catalytic activity.; mutation to L: 8-fold decrease in Km for L-homoserine and 10-fold increase in Km for succinyl-CoA. 20-fold decrease in catalytic activity.; mutation to R: 14-fold decrease in Km for L-homoserine. 72-fold decrease in catalytic activity.
C90 (≠ T90) mutation C->A,S: No change in activity.
C142 (= C142) mutation C->A,S: Lack of activity.
K157 (= K157) mutation to L: Lack of activity.
R193 (= R193) mutation to A: 3-fold increase in Km for L-homoserine. 8-fold decrease in catalytic activity.; mutation to K: 8-fold decrease in catalytic activity.
H235 (= H235) mutation H->A,N: Lack of activity.
E237 (= E237) mutation to A: 32-fold decrease in catalytic activity.; mutation to D: 3-fold decrease in catalytic activity.
Y238 (= Y238) mutation to F: 5-fold increase in Km for L-homoserine.
E246 (= E246) mutation to A: 150-fold increase in Km for L-homoserine.; mutation to D: 24-fold increase in Km for L-homoserine.
R249 (= R249) mutation to K: 4-fold increase in Km for L-homoserine.

Query Sequence

>WP_005349031.1 NCBI__GCF_000173975.1:WP_005349031.1
MPIRINADLPAKKILEHENIFVMDYERSLKQDIRPLKIIIMNLMPTKQATELQLLRSLSN
TPLQVDITFLKTETHDAQNESQTHMETFYTIFPEIKQQYFDGLIITGAPVETLDFEEVDY
WPELVEIMEWSKTHVTSTFHICWAAQAGLYYHYGVRKELLDEKIFGIFQHHTIHRKTPLI
RGFDDVFNAPHSRHSQIVREDVEKNPELTILADSEEAGPFIIIAKEGRQIFVTGHPEYDV
LTLDGEYKRDLAKGMDNVPFPNRYYKDDKPELGPVKSWRCHANTLYTNWLNYYVYQMTTY
DPMEIQNLK

Or try a new SitesBLAST search

SitesBLAST's Database

SitesBLAST's database includes (1) SwissProt entries with experimentally-supported functional features; and (2) protein structures with bound ligands, from the BioLip database.

by Morgan Price, Arkin group
Lawrence Berkeley National Laboratory