Protein: Voltage-dependent N-type calcium channel subunit alpha-1B (Brain calcium channel III) (BIII) (Calcium channel, L type, alpha-1 polypeptide isoform 5) (Voltage-gated calcium channel subunit alpha Cav2.2) (Q00975)
Organism: Homo sapiens (Human)
Function: Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. This alpha-1B subunit gives rise to N-type calcium currents. N-type calcium channels belong to the 'high-voltage activated' (HVA) group. They are involved in pain signaling. Calcium channels containing alpha-1B subunit may play a role in directed migration of immature neurons. Mediates Ca(2+) release probability at hippocampal neuronal soma and synaptic terminals (By similarity).
Subcellular location: Membrane {ECO:0000269|PubMed:34234349}; Multi-pass membrane protein {ECO:0000255}.
Sequence: MVRFGDELGGRYGGPGGGERARGGGAGGAGGPGPGGLQPGQRVLYKQSIAQRARTMALYNPIPVKQNCFTVNRSLFVFSEDNVVRKYAKRITEWPPFEYMILATIIANCIVLALEQHLPDGDKTPMSERLDDTEPYFIGIFCFEAGIKIIALGFVFHKGSYLRNGWNVMDFVVVLTGILATAGTDFDLRTLRAVRVLRPLKLVSGIPSLQVVLKSIMKAMVPLLQIGLLLFFAILMFAIIGLEFYMGKFHKACFPNSTDAEPVGDFPCGKEAPARLCEGDTECREYWPGPNFGITNFDNILFAILTVFQCITMEGWTDILYNTNDAAGNTWNWLYFIPLIIIGSFFMLNLVLGVLSGEFAKERERVENRRAFLKLRRQQQIERELNGYLEWIFKAEEVMLAEEDRNAEEKSPLDVLKRAATKKSRNDLIHAEEGEDRFADLCAVGSPFARASLKSGKTESSSYFRRKEKMFRFFIRRMVKAQSFYWVVLCVVALNTLCVAMVHYNQPRRLTTTLYFAEFVFLGLFLTEMSLKMYGLGPRSYFRSSFNCFDFGVIVGSVFEVVWAAIKPGSSFGISVLRALRLLRIFKVTKYWSSLRNLVVSLLNSMKSIISLLFLLFLFIVVFALLGMQLFGGQFNFQDETPTTNFDTFPAAILTVFQILTGEDWNAVMYHGIESQGGVSKGMFSSFYFIVLTLFGNYTLLNVFLAIAVDNLANAQELTKDEEEMEEAANQKLALQKAKEVAEVSPMSAANISIAARQQNSAKARSVWEQRASQLRLQNLRASCEALYSEMDPEERLRFATTRHLRPDMKTHLDRPLVVELGRDGARGPVGGKARPEAAEAPEGVDPPRRHHRHRDKDKTPAAGDQDRAEAPKAESGEPGAREERPRPHRSHSKEAAGPPEARSERGRGPGPEGGRRHHRRGSPEEAAEREPRRHRAHRHQDPSKECAGAKGERRARHRGGPRAGPREAESGEEPARRHRARHKAQPAHEAVEKETTEKEATEKEAEIVEADKEKELRNHQPREPHCDLETSGTVTVGPMHTLPSTCLQKVEEQPEDADNQRNVTRMGSQPPDPNTIVHIPVMLTGPLGEATVVPSGNVDLESQAEGKKEVEADDVMRSGPRPIVPYSSMFCLSPTNLLRRFCHYIVTMRYFEVVILVVIALSSIALAAEDPVRTDSPRNNALKYLDYIFTGVFTFEMVIKMIDLGLLLHPGAYFRDLWNILDFIVVSGALVAFAFSGSKGKDINTIKSLRVLRVLRPLKTIKRLPKLKAVFDCVVNSLKNVLNILIVYMLFMFIFAVIAVQLFKGKFFYCTDESKELERDCRGQYLDYEKEEVEAQPRQWKKYDFHYDNVLWALLTLFTVSTGEGWPMVLKHSVDATYEEQGPSPGYRMELSIFYVVYFVVFPFFFVNIFVALIIITFQEQGDKVMSECSLEKNERACIDFAISAKPLTRYMPQNRQSFQYKTWTFVVSPPFEYFIMAMIALNTVVLMMKFYDAPYEYELMLKCLNIVFTSMFSMECVLKIIAFGVLNYFRDAWNVFDFVTVLGSITDILVTEIAETNNFINLSFLRLFRAARLIKLLRQGYTIRILLWTFVQSFKALPYVCLLIAMLFFIYAIIGMQVFGNIALDDDTSINRHNNFRTFLQALMLLFRSATGEAWHEIMLSCLSNQACDEQANATECGSDFAYFYFVSFIFLCSFLMLNLFVAVIMDNFEYLTRDSSILGPHHLDEFIRVWAEYDPAACGRISYNDMFEMLKHMSPPLGLGKKCPARVAYKRLVRMNMPISNEDMTVHFTSTLMALIRTALEIKLAPAGTKQHQCDAELRKEISVVWANLPQKTLDLLVPPHKPDEMTVGKVYAALMIFDFYKQNKTTRDQMQQAPGGLSQMGPVSLFHPLKATLEQTQPAVLRGARVFLRQKSSTSLSNGGAIQNQESGIKESVSWGTQRTQDAPHEARPPLERGHSTEIPVGRSGALAVDVQMQSITRRGPDGEPQPGLESQGRAASMPRLAAETQPVTDASPMKRSISTLAQRPRGTHLCSTTPDRPPPSQASSHHHHHRCHRRRDRKQRSLEKGPSLSADMDGAPSSAVGPGLPPGEGPTGCRRERERRQERGRSQERRQPSSSSSEKQRFYSCDRFGGREPPKPKPSLSSHPTSPTAGQEPGPHPQGSGSVNGSPLLSTSGASTPGRGGRRQLPQTPLTPRPSITYKTANSSPIHFAGAQTSLPAFSPGRLSRGLSEHNALLQRDPLSQPLAPGSRIGSDPYLGQRLDSEASVHALPEDTLTFEEAVATNSGRSSRTSYVSSLTSQSHPLRRVPNGYHCTLGLSSGGRARHSYHHPDQDHWC
InterPro domains: - IPR050599: Voltage-dependent calcium channel alpha-1 subunit (family) [38-2014]
- IPR027359: Voltage-dependent channel domain superfamily (homologous_superfamily) [84-1582]
- IPR005447: Voltage-dependent calcium channel, N-type, alpha-1 subunit (family) [261-2071]
- IPR002048: EF-hand domain (domain) [1724-1759]
- IPR002077: Voltage-dependent calcium channel, alpha-1 subunit (family) [210-1648]
- IPR014873: Voltage-dependent calcium channel, alpha-1 subunit, IQ domain (domain) [1792-1880]
- IPR031649: Voltage-dependent L-type calcium channel, IQ-associated domain (domain) [1728-1781]
- IPR005821: Ion transport domain (domain) [95-1718]
Interaction partners: - Voltage-dependent L-type calcium channel subunit beta-3
- Voltage-dependent calcium channel subunit alpha-2/delta-1
- Syntaxin-1A
- Voltage-dependent L-type calcium channel subunit beta-1
- Calmodulin-1
- Voltage-dependent R-type calcium channel subunit alpha-1E
- Voltage-dependent P/Q-type calcium channel subunit alpha-1A
- Calmodulin-1
- Voltage-dependent calcium channel subunit alpha-2/delta-2
- Dihydropyrimidinase-related protein 2
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0005215 (transporter activity), GO:0022857 (transmembrane transporter activity), GO:0033218 (amide binding), GO:0005515 (protein binding), GO:0015075 (monoatomic ion transmembrane transporter activity), GO:0022803 (passive transmembrane transporter activity), GO:0000149 (SNARE binding), GO:1901702 (salt transmembrane transporter activity), GO:0042277 (peptide binding), GO:0015318 (inorganic molecular entity transmembrane transporter activity), GO:0019905 (syntaxin binding), GO:0015267 (channel activity), GO:0008324 (monoatomic cation transmembrane transporter activity), GO:0005216 (monoatomic ion channel activity), GO:0022890 (inorganic cation transmembrane transporter activity), GO:0015085 (calcium ion transmembrane transporter activity), GO:0001540 (amyloid-beta binding), GO:0005262 (calcium channel activity), GO:0046873 (metal ion transmembrane transporter activity), GO:0005261 (monoatomic cation channel activity), GO:0022839 (monoatomic ion gated channel activity), GO:0022836 (gated channel activity), GO:0022843 (voltage-gated monoatomic cation channel activity), GO:0005244 (voltage-gated monoatomic ion channel activity), GO:0022832 (voltage-gated channel activity), GO:0005245 (voltage-gated calcium channel activity), GO:0008331 (high voltage-gated calcium channel activity)
Biological Process (BP): GO:0008150 (biological process), GO:0065007 (biological regulation), GO:0051179 (localization), GO:0051234 (establishment of localization), GO:0065008 (regulation of biological quality), GO:0007204 (positive regulation of cytosolic calcium ion concentration), GO:0006810 (transport), GO:0006811 (monoatomic ion transport), GO:0071702 (organic substance transport), GO:0006812 (monoatomic cation transport), GO:0006816 (calcium ion transport), GO:0030001 (metal ion transport)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0005737 (cytoplasm), GO:0042995 (cell projection), GO:0016020 (membrane), GO:0071944 (cell periphery), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0005886 (plasma membrane), GO:0043231 (intracellular membrane-bounded organelle), GO:0005634 (nucleus)