GPR21 (gpr21_human)
FAMILY
Class A (Rhodopsin) Orphan receptors Class A orphans GPR21
GENE
GPR21
ORGANISM
Human (Homo sapiens)
ALT. NAMES
Probable G-protein coupled receptor 21
SOURCE
SWISSPROT
SEQUENCE
N-term | |||||||||
M
|
N
|
S
|
T
|
L
|
D
|
G
|
N
|
Q
|
S
|
10 |
S
|
H
|
P
|
F
|
C
|
L
|
L
|
A
|
F
|
G
|
20 |
TM1 | |||||||||
Y
|
L
|
E
|
T
|
V
|
N
|
F
|
C
|
L
|
L
|
30 |
E
|
V
|
L
|
I
|
I
|
V
|
F
|
L
|
T
|
V
|
40 |
L
|
I
|
I
|
S
|
G
|
N
|
I
|
I
|
V
|
I
|
50 |
ICL1 | |||||||||
F
|
V
|
F
|
H
|
C
|
A
|
P
|
L
|
L
|
N
|
60 |
TM2 | |||||||||
H
|
H
|
T
|
T
|
S
|
Y
|
F
|
I
|
Q
|
T
|
70 |
M
|
A
|
Y
|
A
|
D
|
L
|
F
|
V
|
G
|
V
|
80 |
S
|
C
|
V
|
V
|
P
|
S
|
L
|
S
|
L
|
L
|
90 |
ECL1 | TM3 | ||||||||
H
|
H
|
P
|
L
|
P
|
V
|
E
|
E
|
S
|
L
|
100 |
T
|
C
|
Q
|
I
|
F
|
G
|
F
|
V
|
V
|
S
|
110 |
V
|
L
|
K
|
S
|
V
|
S
|
M
|
A
|
S
|
L
|
120 |
A
|
C
|
I
|
S
|
I
|
D
|
R
|
Y
|
I
|
A
|
130 |
ICL2 | |||||||||
I
|
T
|
K
|
P
|
L
|
T
|
Y
|
N
|
T
|
L
|
140 |
TM4 | |||||||||
V
|
T
|
P
|
W
|
R
|
L
|
R
|
L
|
C
|
I
|
150 |
F
|
L
|
I
|
W
|
L
|
Y
|
S
|
T
|
L
|
V
|
160 |
ECL2 | |||||||||
F
|
L
|
P
|
S
|
F
|
F
|
H
|
W
|
G
|
K
|
170 |
P
|
G
|
Y
|
H
|
G
|
D
|
V
|
F
|
Q
|
W
|
180 |
TM5 | |||||||||
C
|
A
|
E
|
S
|
W
|
H
|
T
|
D
|
S
|
Y
|
190 |
F
|
T
|
L
|
F
|
I
|
V
|
M
|
M
|
L
|
Y
|
200 |
A
|
P
|
A
|
A
|
L
|
I
|
V
|
C
|
F
|
T
|
210 |
Y
|
F
|
N
|
I
|
F
|
R
|
I
|
C
|
Q
|
Q
|
220 |
H
|
T
|
K
|
D
|
I
|
S
|
E
|
R
|
Q
|
A
|
230 |
ICL3 | |||||||||
R
|
F
|
S
|
S
|
Q
|
S
|
G
|
E
|
T
|
G
|
240 |
TM6 | |||||||||
E
|
V
|
Q
|
A
|
C
|
P
|
D
|
K
|
R
|
Y
|
250 |
A
|
M
|
V
|
L
|
F
|
R
|
I
|
T
|
S
|
V
|
260 |
F
|
Y
|
I
|
L
|
W
|
L
|
P
|
Y
|
I
|
I
|
270 |
Y
|
F
|
L
|
L
|
E
|
S
|
S
|
T
|
G
|
H
|
280 |
ECL3 | TM7 | ||||||||
S
|
N
|
R
|
F
|
A
|
S
|
F
|
L
|
T
|
T
|
290 |
W
|
L
|
A
|
I
|
S
|
N
|
S
|
F
|
C
|
N
|
300 |
H8 | |||||||||
C
|
V
|
I
|
Y
|
S
|
L
|
S
|
N
|
S
|
V
|
310 |
F
|
Q
|
R
|
G
|
L
|
K
|
R
|
L
|
S
|
G
|
320 |
A
|
M
|
C
|
T
|
S
|
C
|
A
|
S
|
Q
|
T
|
330 |
C-term | |||||||||
T
|
A
|
N
|
D
|
P
|
Y
|
T
|
V
|
R
|
S
|
340 |
K
|
G
|
P
|
L
|
N
|
G
|
C
|
H
|
I
|
LINKS
DIAGRAMS
Pick color:
Invitro Mutant Data: Increased binding/potency: >5-fold, >10-fold; Reduced binding/potency: >5-fold, >10-fold; No/low effect (<5-fold); and N/A
Pick color:
Invitro Mutant Data: Increased binding/potency: >5-fold, >10-fold; Reduced binding/potency: >5-fold, >10-fold; No/low effect (<5-fold); and N/A
MUTATIONS
PHYSIOLOGICAL LIGANDS
No physiological ligands available