; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; CuGenDBv2

Carg27236 (gene) of Silver-seed gourd (SMH-JMG-627) v2 genome

Gene IDCarg27236
OrganismCucurbita argyrosperma subsp. argyrosperma cv. SMH-JMG-627 (Silver-seed gourd (SMH-JMG-627) v2)
DescriptionRegulator of chromosome condensation (RCC1) family with FYVE zinc finger domain
Genome locationCarg_Chr05:6167492..6173732
RNA-Seq ExpressionCarg27236
SyntenyCarg27236
Gene Ontology termsGO:0046872 - metal ion binding (molecular function)
InterPro domainsIPR027988 - Transcription factor BREVIS RADIX, N-terminal domain


Homology Show/hide homology
GenBank top hitse value%identityAlignment
KAG6598992.1 PH, RCC1 and FYVE domains-containing protein 1, partial [Cucurbita argyrosperma subsp. sororia]9.6e-8385.37Show/hide
Query:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN
        +VQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQ  LKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN
Subjt:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN

Query:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV---------------------RRHFTEAQAEKWWAEFGAKVCERHKGKKEGKEKALFGDRLPLPSLEDILP
        GISKSQNLPTGNKGQNEKGEWVVQDEPGV                     RRHFTEAQAEKWWAEFGA      KGKKEGKEKALFGDRLPLPSLEDILP
Subjt:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV---------------------RRHFTEAQAEKWWAEFGAKVCERHKGKKEGKEKALFGDRLPLPSLEDILP

Query:  FSCSK
        FSCSK
Subjt:  FSCSK

KAG7029960.1 hypothetical protein SDJN02_08304, partial [Cucurbita argyrosperma subsp. argyrosperma]1.5e-157100Show/hide
Query:  MTSKSSIGSNKKTRALMPFTSTTSGSSCYFDCATYIGHGCHHLWVVWCILTLPNEATIHPLFHMSQLKEAVGDPSLIQPCTPMLTMLIDEFEWTVEPQEV
        MTSKSSIGSNKKTRALMPFTSTTSGSSCYFDCATYIGHGCHHLWVVWCILTLPNEATIHPLFHMSQLKEAVGDPSLIQPCTPMLTMLIDEFEWTVEPQEV
Subjt:  MTSKSSIGSNKKTRALMPFTSTTSGSSCYFDCATYIGHGCHHLWVVWCILTLPNEATIHPLFHMSQLKEAVGDPSLIQPCTPMLTMLIDEFEWTVEPQEV

Query:  QELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESNGI
        QELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESNGI
Subjt:  QELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESNGI

Query:  SKSQNLPTGNKGQNEKGEWVVQDEPGVRRHFTEAQAEKWWAEFGAKVCERHKGKKEGKEKALFGDRLPLPSLEDILPFSCSK
        SKSQNLPTGNKGQNEKGEWVVQDEPGVRRHFTEAQAEKWWAEFGAKVCERHKGKKEGKEKALFGDRLPLPSLEDILPFSCSK
Subjt:  SKSQNLPTGNKGQNEKGEWVVQDEPGVRRHFTEAQAEKWWAEFGAKVCERHKGKKEGKEKALFGDRLPLPSLEDILPFSCSK

XP_022946481.1 PH, RCC1 and FYVE domains-containing protein 1-like [Cucurbita moschata]1.2e-6985.31Show/hide
Query:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN
        +VQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQ  LKEMADKMPEAHSDILN CTVSGQNGSNLNQLPTESLSMSINSRLESN
Subjt:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN

Query:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV---------------------RRHFTEAQAEKWWAEFGAKVCERHKGK
        GISKSQNLPTGNKGQNEKGEWVVQDEPGV                     RRHFTEAQAEKWWAEFGAKVCERHK K
Subjt:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV---------------------RRHFTEAQAEKWWAEFGAKVCERHKGK

XP_022972822.1 PH, RCC1 and FYVE domains-containing protein 1-like [Cucurbita maxima]1.2e-6985.31Show/hide
Query:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN
        +VQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQ  LKEMADKMPEAHSDILN CTVSGQNGSNLNQLPTESLSMSINSRLESN
Subjt:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN

Query:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV---------------------RRHFTEAQAEKWWAEFGAKVCERHKGK
        GISKSQNLPTGNKGQNEKGEWVVQDEPGV                     RRHFTEAQAEKWWAEFGAKVCERHK K
Subjt:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV---------------------RRHFTEAQAEKWWAEFGAKVCERHKGK

XP_023546471.1 PH, RCC1 and FYVE domains-containing protein 1-like isoform X1 [Cucurbita pepo subsp. pepo]1.2e-6985.31Show/hide
Query:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN
        +VQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQ  LKEMADKMPEAHSDILN CTVSGQNGSNLNQLPTESLSMSINSRLESN
Subjt:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN

Query:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV---------------------RRHFTEAQAEKWWAEFGAKVCERHKGK
        GISKSQNLPTGNKGQNEKGEWVVQDEPGV                     RRHFTEAQAEKWWAEFGAKVCERHK K
Subjt:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV---------------------RRHFTEAQAEKWWAEFGAKVCERHKGK

TrEMBL top hitse value%identityAlignment
A0A1S3B416 X-linked retinitis pigmentosa GTPase regulator-like isoform X33.0e-5876.7Show/hide
Query:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN
        +VQELTCKSKNLEAELEKTSKKLMEVTAIA DEA+KCKSAKEVIKSLA Q  LKEMA+KMPEA + I+N  TVSGQNGSNLNQL TESLSMSINSRLESN
Subjt:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN

Query:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV--------------------RRHFTEAQAEKWWAEFGAKVCERHKGK
        GISKSQ L TG K  NEK EWVVQDEPGV                    RRHFTEAQAEKWWAEFGAKVCERHK K
Subjt:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV--------------------RRHFTEAQAEKWWAEFGAKVCERHKGK

A0A1S3B4R6 X-linked retinitis pigmentosa GTPase regulator-like isoform X13.0e-5876.7Show/hide
Query:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN
        +VQELTCKSKNLEAELEKTSKKLMEVTAIA DEA+KCKSAKEVIKSLA Q  LKEMA+KMPEA + I+N  TVSGQNGSNLNQL TESLSMSINSRLESN
Subjt:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN

Query:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV--------------------RRHFTEAQAEKWWAEFGAKVCERHKGK
        GISKSQ L TG K  NEK EWVVQDEPGV                    RRHFTEAQAEKWWAEFGAKVCERHK K
Subjt:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV--------------------RRHFTEAQAEKWWAEFGAKVCERHKGK

A0A1S4DUS6 X-linked retinitis pigmentosa GTPase regulator-like isoform X43.0e-5876.7Show/hide
Query:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN
        +VQELTCKSKNLEAELEKTSKKLMEVTAIA DEA+KCKSAKEVIKSLA Q  LKEMA+KMPEA + I+N  TVSGQNGSNLNQL TESLSMSINSRLESN
Subjt:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN

Query:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV--------------------RRHFTEAQAEKWWAEFGAKVCERHKGK
        GISKSQ L TG K  NEK EWVVQDEPGV                    RRHFTEAQAEKWWAEFGAKVCERHK K
Subjt:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV--------------------RRHFTEAQAEKWWAEFGAKVCERHKGK

A0A6J1G3V4 PH, RCC1 and FYVE domains-containing protein 1-like5.9e-7085.31Show/hide
Query:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN
        +VQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQ  LKEMADKMPEAHSDILN CTVSGQNGSNLNQLPTESLSMSINSRLESN
Subjt:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN

Query:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV---------------------RRHFTEAQAEKWWAEFGAKVCERHKGK
        GISKSQNLPTGNKGQNEKGEWVVQDEPGV                     RRHFTEAQAEKWWAEFGAKVCERHK K
Subjt:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV---------------------RRHFTEAQAEKWWAEFGAKVCERHKGK

A0A6J1I9Q9 PH, RCC1 and FYVE domains-containing protein 1-like5.9e-7085.31Show/hide
Query:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN
        +VQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQ  LKEMADKMPEAHSDILN CTVSGQNGSNLNQLPTESLSMSINSRLESN
Subjt:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESN

Query:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV---------------------RRHFTEAQAEKWWAEFGAKVCERHKGK
        GISKSQNLPTGNKGQNEKGEWVVQDEPGV                     RRHFTEAQAEKWWAEFGAKVCERHK K
Subjt:  GISKSQNLPTGNKGQNEKGEWVVQDEPGV---------------------RRHFTEAQAEKWWAEFGAKVCERHKGK

SwissProt top hitse value%identityAlignment
No hits found
Arabidopsis top hitse value%identityAlignment
AT1G69710.1 Regulator of chromosome condensation (RCC1) family with FYVE zinc finger domain1.8e-2342.94Show/hide
Query:  QEVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTES---LSMSINSR
        ++V++L  K+  LE ELEKT ++L  VTA+A DEA++ +SAKEVI+SL TQ  LKEMA+K  +  S   N      +    + Q   ++     +S +S+
Subjt:  QEVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTES---LSMSINSR

Query:  LESNGISKSQNLPTGNKGQNEKGEWVVQDEPGV--------------------RRHFTEAQAEKWWAEFGAKVCERH
         E+N  SKS     G++ QN+K E VVQDEPGV                    R+ FTE QAEKWW E GAKVCERH
Subjt:  LESNGISKSQNLPTGNKGQNEKGEWVVQDEPGV--------------------RRHFTEAQAEKWWAEFGAKVCERH

AT3G47660.1 Regulator of chromosome condensation (RCC1) family protein9.1e-0748.53Show/hide
Query:  EWTVEPQEVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQ--NMLKEMADK
        E +V   +V+ELT KSK LE EL KTSKKL     +A D+A+K KS++E+++SL  Q  N  K+  DK
Subjt:  EWTVEPQEVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQ--NMLKEMADK

AT5G12350.1 Regulator of chromosome condensation (RCC1) family with FYVE zinc finger domain1.1e-1534.59Show/hide
Query:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQL-PTESLSMSINSRLES
        +V+ LT K++  E ELE+T+K+L E  AI  +E  +CK+AKEVIKSL  Q  LK+MA+++P   +  +         GS+  ++ P   L+ + +   E 
Subjt:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQL-PTESLSMSINSRLES

Query:  NGISKSQ-----------NLPTGNKGQNEKGEWVVQDEPGV--------------------RRHFTEAQAEKWWAEFGAKVCERH
        NGI+              N    N+ +NEK EWV QDEPGV                    R+ F+E QAE+WWA+   +V E++
Subjt:  NGISKSQ-----------NLPTGNKGQNEKGEWVVQDEPGV--------------------RRHFTEAQAEKWWAEFGAKVCERH

AT5G19420.1 Regulator of chromosome condensation (RCC1) family with FYVE zinc finger domain2.2e-1332.84Show/hide
Query:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMP-----EAHSDILN-------YCTVSGQNGSNLNQLPTES
        +V+ LT K++  E ELE+T+K+L E  AIA++E+ +CK+AKEVIKSL  Q  LK+MA+++P        S  LN       Y   S    +  N   T+S
Subjt:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMP-----EAHSDILN-------YCTVSGQNGSNLNQLPTES

Query:  LSM----------------SINSRLESNGISKSQNLPTGNKGQNE---KGEWVVQDEPGV--------------------RRHFTEAQAEKWWAEFGAKV
         S+                S + R ++N  +++ N  +    ++E   + EWV QDEPGV                    R+ F+E QAE+WWAE   +V
Subjt:  LSM----------------SINSRLESNGISKSQNLPTGNKGQNE---KGEWVVQDEPGV--------------------RRHFTEAQAEKWWAEFGAKV

Query:  CERH
         E++
Subjt:  CERH

AT5G19420.2 Regulator of chromosome condensation (RCC1) family with FYVE zinc finger domain2.2e-1332.84Show/hide
Query:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMP-----EAHSDILN-------YCTVSGQNGSNLNQLPTES
        +V+ LT K++  E ELE+T+K+L E  AIA++E+ +CK+AKEVIKSL  Q  LK+MA+++P        S  LN       Y   S    +  N   T+S
Subjt:  EVQELTCKSKNLEAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMP-----EAHSDILN-------YCTVSGQNGSNLNQLPTES

Query:  LSM----------------SINSRLESNGISKSQNLPTGNKGQNE---KGEWVVQDEPGV--------------------RRHFTEAQAEKWWAEFGAKV
         S+                S + R ++N  +++ N  +    ++E   + EWV QDEPGV                    R+ F+E QAE+WWAE   +V
Subjt:  LSM----------------SINSRLESNGISKSQNLPTGNKGQNE---KGEWVVQDEPGV--------------------RRHFTEAQAEKWWAEFGAKV

Query:  CERH
         E++
Subjt:  CERH


Sequences Show/hide sequences
CDS sequenceShow/hide CDS sequence
ATGACTTCGAAATCCAGTATCGGCTCTAACAAGAAAACAAGGGCATTGATGCCCTTCACATCAACCACTAGTGGCTCATCTTGTTACTTTGACTGTGCTACCTATATTGG
ACATGGTTGCCACCACCTGTGGGTAGTGTGGTGTATCTTGACTCTTCCTAATGAGGCAACAATTCATCCGCTTTTCCACATGTCACAGCTCAAGGAGGCCGTGGGGGATC
CTTCATTAATCCAACCTTGTACACCAATGCTTACTATGCTTATTGATGAGTTTGAGTGGACGGTTGAGCCACAAGAAGTGCAAGAGCTGACTTGCAAGTCCAAAAATCTT
GAAGCTGAACTCGAGAAAACCTCAAAGAAATTGATGGAGGTTACTGCAATAGCTACAGATGAAGCTGACAAATGCAAATCAGCCAAGGAAGTTATTAAATCCTTAGCGAC
TCAGAACATGTTAAAAGAGATGGCCGATAAGATGCCAGAGGCACACAGTGATATTCTCAACTATTGCACTGTTTCTGGGCAAAATGGTAGTAATCTCAATCAGCTTCCCA
CCGAGAGCCTTTCAATGAGCATAAACTCTCGTTTGGAGTCAAATGGAATTTCAAAAAGTCAAAACTTACCAACTGGAAACAAAGGACAAAATGAAAAGGGAGAATGGGTT
GTACAAGACGAACCAGGCGTTCGAAGACATTTTACAGAAGCACAAGCAGAGAAGTGGTGGGCGGAATTTGGAGCGAAGGTTTGCGAGCGGCACAAGGGAAAGAAAGAAGG
CAAGGAGAAGGCACTTTTTGGTGACCGTCTTCCCCTCCCTTCTCTGGAAGACATTCTTCCTTTTTCATGTTCCAAATGA
mRNA sequenceShow/hide mRNA sequence
ATGACTTCGAAATCCAGTATCGGCTCTAACAAGAAAACAAGGGCATTGATGCCCTTCACATCAACCACTAGTGGCTCATCTTGTTACTTTGACTGTGCTACCTATATTGG
ACATGGTTGCCACCACCTGTGGGTAGTGTGGTGTATCTTGACTCTTCCTAATGAGGCAACAATTCATCCGCTTTTCCACATGTCACAGCTCAAGGAGGCCGTGGGGGATC
CTTCATTAATCCAACCTTGTACACCAATGCTTACTATGCTTATTGATGAGTTTGAGTGGACGGTTGAGCCACAAGAAGTGCAAGAGCTGACTTGCAAGTCCAAAAATCTT
GAAGCTGAACTCGAGAAAACCTCAAAGAAATTGATGGAGGTTACTGCAATAGCTACAGATGAAGCTGACAAATGCAAATCAGCCAAGGAAGTTATTAAATCCTTAGCGAC
TCAGAACATGTTAAAAGAGATGGCCGATAAGATGCCAGAGGCACACAGTGATATTCTCAACTATTGCACTGTTTCTGGGCAAAATGGTAGTAATCTCAATCAGCTTCCCA
CCGAGAGCCTTTCAATGAGCATAAACTCTCGTTTGGAGTCAAATGGAATTTCAAAAAGTCAAAACTTACCAACTGGAAACAAAGGACAAAATGAAAAGGGAGAATGGGTT
GTACAAGACGAACCAGGCGTTCGAAGACATTTTACAGAAGCACAAGCAGAGAAGTGGTGGGCGGAATTTGGAGCGAAGGTTTGCGAGCGGCACAAGGGAAAGAAAGAAGG
CAAGGAGAAGGCACTTTTTGGTGACCGTCTTCCCCTCCCTTCTCTGGAAGACATTCTTCCTTTTTCATGTTCCAAATGA
Protein sequenceShow/hide protein sequence
MTSKSSIGSNKKTRALMPFTSTTSGSSCYFDCATYIGHGCHHLWVVWCILTLPNEATIHPLFHMSQLKEAVGDPSLIQPCTPMLTMLIDEFEWTVEPQEVQELTCKSKNL
EAELEKTSKKLMEVTAIATDEADKCKSAKEVIKSLATQNMLKEMADKMPEAHSDILNYCTVSGQNGSNLNQLPTESLSMSINSRLESNGISKSQNLPTGNKGQNEKGEWV
VQDEPGVRRHFTEAQAEKWWAEFGAKVCERHKGKKEGKEKALFGDRLPLPSLEDILPFSCSK