Hmdb loader
Identification
HMDB Protein ID HMDBP07758
Secondary Accession Numbers
  • 13467
Name Small conductance calcium-activated potassium channel protein 2
Synonyms
  1. KCa2.2
  2. SK2
  3. SKCa 2
  4. SKCa2
Gene Name KCNN2
Protein Type Unknown
Biological Properties
General Function Involved in calmodulin binding
Specific Function Forms a voltage-independent potassium channel activated by intracellular calcium. Activation is followed by membrane hyperpolarization. Thought to regulate neuronal excitability by contributing to the slow component of synaptic afterhyperpolarization. The channel is blocked by apamin
Pathways Not Available
Reactions Not Available
GO Classification
Component
membrane
cell part
membrane part
intrinsic to membrane
integral to membrane
Function
binding
small conductance calcium-activated potassium channel activity
calmodulin binding
protein binding
calcium activated cation channel activity
calcium-activated potassium channel activity
transmembrane transporter activity
substrate-specific transmembrane transporter activity
ion transmembrane transporter activity
transporter activity
ion channel activity
cation channel activity
Process
establishment of localization
transport
monovalent inorganic cation transport
potassium ion transport
ion transport
cation transport
Cellular Location
  1. Membrane
  2. Multi-pass membrane protein
Gene Properties
Chromosome Location Chromosome:5
Locus 5q22.3
SNPs KCNN2
Gene Sequence
>1740 bp
ATGAGCAGCTGCAGGTACAACGGGGGCGTCATGCGGCCGCTCAGCAACTTGAGCGCGTCC
CGCCGGAACCTCCACGAGATGGACTCAGAGGCGCAGCCCCTGCAGCCCCCCGCGTCTGTC
GGAGGAGGTGGCGGCGCGTCCTCCCCGTCTGCAGACGCTGCCGCCGCCGCCGCTGTTTCG
TCCTCAGCCCCCGAGATCGTGGTGTCTAAGCCCGAGCACAACAACTCCAACAACCTGGCG
CTCTATGGAACCGGCGGCGGAGGCAGCACTGGAGGAGGCGGCGGCGGTGGAGGGAGCGGG
CACGGCAGCAGCAGTGGCACCAAGTCCAGCAAAAAGAAAAACCAGAACATCGGCTACAAG
CTGGGCCACCGGCGCGCCCTGTTCGAAAAGCGCAAGCGGCTCAGCGACTACGCGCTCATC
TTCGGCATGTTCGGCATCGTGGTCATGGTCATCGAGACCGAGCTGTCGTGGGGCGCCTAC
GACAAGGCGTCGCTGTATTCCTTAGCTCTGAAATGCCTTATCAGTCTCTCCACGATCATC
CTGCTCGGTCTGATCATCGTGTACCACGCCAGGGAAATACAGTTGTTCATGGTGGACAAT
GGAGCAGATGACTGGAGAATAGCCATGACTTATGAGCGTATTTTCTTCATCTGCTTGGAA
ATACTGGTGTGTGCTATTCATCCCATACCTGGGAATTATACATTCACATGGACGGCCCGG
CTTGCCTTCTCCTATGCCCCATCCACAACCACCGCTGATGTGGATATTATTTTATCTATA
CCAATGTTCTTAAGACTCTATCTGATTGCCAGAGTCATGCTTTTACATAGCAAACTTTTC
ACTGATGCCTCCTCTAGAAGCATTGGAGCACTTAATAAGATAAACTTCAATACACGTTTT
GTTATGAAGACTTTAATGACTATATGCCCAGGAACTGTACTCTTGGTTTTTAGTATCTCA
TTATGGATAATTGCCGCATGGACTGTCCGAGCTTGTGAAAGGTACCATGATCAACAGGAT
GTTACTAGCAACTTCCTTGGAGCGATGTGGTTGATATCAATAACTTTTCTCTCCATTGGT
TATGGTGACATGGTACCTAACACATACTGTGGAAAAGGAGTCTGCTTACTTACTGGAATT
ATGGGTGCTGGTTGCACAGCCCTGGTGGTAGCTGTAGTGGCAAGGAAGCTAGAACTTACC
AAAGCAGAAAAACACGTGCACAATTTCATGATGGATACTCAGCTGACTAAAAGAGTAAAA
AATGCAGCTGCCAATGTACTCAGGGAAACATGGCTAATTTACAAAAATACAAAGCTAGTG
AAAAAGATAGATCATGCAAAAGTAAGAAAACATCAACGAAAATTCCTGCAAGCTATTCAT
CAATTAAGAAGTGTAAAAATGGAGCAGAGGAAACTGAATGACCAAGCAAACACTTTGGTG
GACTTGGCAAAGACCCAGAACATCATGTATGATATGATTTCTGACTTAAACGAAAGGAGT
GAAGACTTCGAGAAGAGGATTGTTACCCTGGAAACAAAACTAGAGACTTTGATTGGTAGC
ATCCACGCCCTCCCTGGGCTCATAAGCCAGACCATCAGGCAGCAGCAGAGAGATTTCATT
GAGGCTCAGATGGAGAGCTACGACAAGCACGTCACTTACAATGCTGAGCGGTCCCGGTCC
TCGTCCAGGAGGCGGCGGTCCTCTTCCACAGCACCACCAACTTCATCAGAGAGTAGCTAG
Protein Properties
Number of Residues 579
Molecular Weight 63759.0
Theoretical pI 9.99
Pfam Domain Function
Signals
  • None
Transmembrane Regions
  • 138-158
  • 168-188
  • 214-234
  • 256-276
  • 305-325
  • 374-394
Protein Sequence
>Small conductance calcium-activated potassium channel protein 2
MSSCRYNGGVMRPLSNLSASRRNLHEMDSEAQPLQPPASVGGGGGASSPSAAAAAAAAVS
SSAPEIVVSKPEHNNSNNLALYGTGGGGSTGGGGGGGGSGHGSSSGTKSSKKKNQNIGYK
LGHRRALFEKRKRLSDYALIFGMFGIVVMVIETELSWGAYDKASLYSLALKCLISLSTII
LLGLIIVYHAREIQLFMVDNGADDWRIAMTYERIFFICLEILVCAIHPIPGNYTFTWTAR
LAFSYAPSTTTADVDIILSIPMFLRLYLIARVMLLHSKLFTDASSRSIGALNKINFNTRF
VMKTLMTICPGTVLLVFSISLWIIAAWTVRACERYHDQQDVTSNFLGAMWLISITFLSIG
YGDMVPNTYCGKGVCLLTGIMGAGCTALVVAVVARKLELTKAEKHVHNFMMDTQLTKRVK
NAAANVLRETWLIYKNTKLVKKIDHAKVRKHQRKFLQAIHQLRSVKMEQRKLNDQANTLV
DLAKTQNIMYDMISDLNERSEDFEKRIVTLETKLETLIGSIHALPGLISQTIRQQQRDFI
EAQMESYDKHVTYNAERSRSSSRRRRSSSTAPPTSSESS
GenBank ID Protein 10334701
UniProtKB/Swiss-Prot ID Q9H2S1
UniProtKB/Swiss-Prot Entry Name KCNN2_HUMAN
PDB IDs
GenBank Gene ID AF239613
GeneCard ID KCNN2
GenAtlas ID KCNN2
HGNC ID HGNC:6291
References
General References
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  2. Gerhard DS, Wagner L, Feingold EA, Shenmen CM, Grouse LH, Schuler G, Klein SL, Old S, Rasooly R, Good P, Guyer M, Peck AM, Derge JG, Lipman D, Collins FS, Jang W, Sherry S, Feolo M, Misquitta L, Lee E, Rotmistrovsky K, Greenhut SF, Schaefer CF, Buetow K, Bonner TI, Haussler D, Kent J, Kiekhaus M, Furey T, Brent M, Prange C, Schreiber K, Shapiro N, Bhat NK, Hopkins RF, Hsie F, Driscoll T, Soares MB, Casavant TL, Scheetz TE, Brown-stein MJ, Usdin TB, Toshiyuki S, Carninci P, Piao Y, Dudekula DB, Ko MS, Kawakami K, Suzuki Y, Sugano S, Gruber CE, Smith MR, Simmons B, Moore T, Waterman R, Johnson SL, Ruan Y, Wei CL, Mathavan S, Gunaratne PH, Wu J, Garcia AM, Hulyk SW, Fuh E, Yuan Y, Sneed A, Kowis C, Hodgson A, Muzny DM, McPherson J, Gibbs RA, Fahey J, Helton E, Ketteman M, Madan A, Rodrigues S, Sanchez A, Whiting M, Madari A, Young AC, Wetherby KD, Granite SJ, Kwong PN, Brinkley CP, Pearson RL, Bouffard GG, Blakesly RW, Green ED, Dickson MC, Rodriguez AC, Grimwood J, Schmutz J, Myers RM, Butterfield YS, Griffith M, Griffith OL, Krzywinski MI, Liao N, Morin R, Palmquist D, Petrescu AS, Skalska U, Smailus DE, Stott JM, Schnerch A, Schein JE, Jones SJ, Holt RA, Baross A, Marra MA, Clifton S, Makowski KA, Bosak S, Malek J: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). Genome Res. 2004 Oct;14(10B):2121-7. [PubMed:15489334 ]
  3. Desai R, Peretz A, Idelson H, Lazarovici P, Attali B: Ca2+-activated K+ channels in human leukemic Jurkat T cells. Molecular cloning, biochemical and functional characterization. J Biol Chem. 2000 Dec 22;275(51):39954-63. [PubMed:10991935 ]