4FT3 Chain A
Serine/threonine-protein kinase Chk1 (CHEK1)
Active — 99.8%DFG-inαC-inType1 · H1K
Resolution
2.5 Å
R-value
0.17
Predicted activity confidence99.8%
Structure info
Alternate conformationB
Missing atoms22
Missing residues0
Salt bridge (KinCore)Saltbr-in
Sequence info
PDB sequence
AVPFVEDWDLVQTLGEGAYGEVQLAVNRVTEEAVAVKIVDMENIKKEICINKMLNHENVVKFYGHRREGNIQYLFLEYCSGGELFDRIEPDIGMPEPDAQRFFHQLMAGVVYLHGIGITHRDIKPENLLLDERDNLKISDFGLATVFRYNNRERLLNKMGTLPYVAPELLKRREFHAEPVDVWSCGIVLTAMLAGELPWDQPSDSQEYSDWKEKKTYLNPWKKIDSAPLALLHKILVENPSARITIPDIKKDRWYNKPLKKGAKRPRVTS
UniProt reference sequence
WDLVQTLGEGAYGEVQLAVNRVTEEAVAVKIVDMKRAVDCPENIKKEICINKMLNHENVVKFYGHRREGNIQYLFLEYCSGGELFDRIEPDIGMPEPDAQRFFHQLMAGVVYLHGIGITHRDIKPENLLLDERDNLKISDFGLATVFRYNNRERLLNKMCGTLPYVAPELLKRREFHAEPVDVWSCGIVLTAMLAGELPWDQPSDSCQEYSDWKEKKTYLNPWKKIDSAPLALLHKILVENPSARITIPDIKKDRWY
Aligned reference sequence
WDLV----------------QTLGEGA----------------YGEVQLAVN--RV------------------------------------TEEAVAVKIVD--MKRAVDC---------------------------PENIKKEICINKML--------------------------NHENVVKFYGHRREGN--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------IQYLFLEYCSG--------------GELFDRIEP--DI-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------GMPEPDAQRFFHQLMAGVVYLHGI---------------------------------------------GITHRDI-----KPENLLLDE--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------RDNLKISDFGLATVFRYNNRE--RLL-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------NKMCGTLPYVAPELLKR--------------------------------REFHAEPVDVWSCGIVLTAMLAG-----------------ELPWDQ--P-----------------------------------------------SDSCQEYSDWKEK--KTYLNPWKKID----------------------------------------------------------------------------------------------------SAPLALLHKILVENPSARIT--------------IPDIKKDRWY
Shaded segments mark residues present in the UniProt reference but not resolved in this structure.
Projected alignment
WDLV----------------QTLGEGA----------------YGEVQLAVN--RV------------------------------------TEEAVAVKIVD--M----------------------------------ENIKKEICINKML--------------------------NHENVVKFYGHRREGN--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------IQYLFLEYCSG--------------GELFDRIEP--DI-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------GMPEPDAQRFFHQLMAGVVYLHGI---------------------------------------------GITHRDI-----KPENLLLDE--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------RDNLKISDFGLATVFRYNNRE--RLL-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------NKM-GTLPYVAPELLKR--------------------------------REFHAEPVDVWSCGIVLTAMLAG-----------------ELPWDQ--P-----------------------------------------------SDS-QEYSDWKEK--KTYLNPWKKID----------------------------------------------------------------------------------------------------SAPLALLHKILVENPSARIT--------------IPDIKKDRWY
Activation segment
DFGLATVFRYNNRE--RLL-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------NKM-GTLPYVAPE
Binding pocket
QTLGEGAYGEVQLVAVKIVNIKKEICINKMLNENVVKFYGHYLFLEYCSGGELFDRIEPYLHGIGITHRDIKPENLLLISDFGLA
Ligand info
Orthosteric ligand
H1K
Allosteric ligand
None
Ligand typeType1
Consensus conformation
DFG conformationin
αC-helix conformationin
Predicted activityactive
KinaDB — structure detail · data from Browse_each_pdb_structure.csv · PDB 4FT3, Chain A