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Symbol CKAP4 contributors: mct/npt/pgu - updated : 29-03-2010
HGNC name cytoskeleton-associated protein 4
HGNC id 16991
Location 12q23.3      Physical location : 106.631.659 - 106.641.713
Synonym name
  • transmembrane protein (63kD), endoplasmic reticulum/Golgi intermediate compartment
  • microtubule-binding 63-kDa cytoskeleton-linking membrane protein
  • Synonym symbol(s) P63, CLIMP-63, ERGIC-63, MGC99554
    TYPE functioning gene
    STRUCTURE 10.05 kb     2 Exon(s)
    10 Kb 5' upstream gene genomic sequence study
    MAPPING cloned Y linked N status provisional
    Physical map
    LOC253724 12q23.3 hypothetical LOC253724 LOC283350 12q23.3 similar to cDNA sequence BC030307 TRA1 12q23.1 tumor rejection antigen (gp96) 1 LOC387881 12 LOC387881 TDG 12q22-24.1 thymine-DNA glycosylase LOC83468 12q gycosyltransferase HCF-2 12q23.3 host cell factor 2 NFYB 12q22-q23 nuclear transcription factor Y, beta LOC390354 12 similar to ribosomal protein L18a; 60S ribosomal protein L18a TXNRD1 12q23-q24 thioredoxin reductase 1 CHST11 12q23.2-q23.3 carbohydrate (chondroitin 4) sulfotransferase 11 DKFZP434K0427 12q24.11 hypothetical protein DKFZp434K0427 LOC121054 12q24.11 similar to Keratin, type I cytoskeletal 18 (Cytokeratin 18) (K18) (CK 18) MGC40397 12q24.11 hypothetical protein MGC40397 FLJ38508 12q24.11 hypothetical protein FLJ38508 KIAA1033 12q24.11 KIAA1033 protein DIP13B 12q24.1 DIP13 beta LOC387882 12 hypothetical gene supported by AJ311377; BC013920 LOC390355 12 similar to dynein, axonemal, heavy chain 11; situs inversus viscerum; dynein, axon, heavy chain 11 LOC245718 12q24.11 similar to heat shock 70kD protein binding protein; progesterone receptor-associated p48 protein; putative tumor suppressor ST13; Hsp70-interacting protein ARK5 12q24.11 AMP-activated protein kinase family member 5 LOC341378 12q24.11 similar to thyroid hormone receptor interactor 11; thyroid receptor interacting protein 11 CKAP4 12q24.11 cytoskeleton-associated protein 4 MGC40368 12q24.11 hypothetical protein MGC40368 RPC2 12q24.11 RNA polymerase III subunit RPC2 RFX4 12q24 regulatory factor X, 4 (influences HLA class II expression) hSyn 12q24.11 brain synembryn LOC390356 12 similar to translation elongation factor eEF-1 beta chain - rabbit MGC17943 12q24.11 hypothetical protein MGC17943 LOC80298 12q24.1 transcription termination factor-like protein CRY1 12q23-q24.1 cryptochrome 1 (photolyase-like) LOC390357 12 similar to Cca3 protein BTBD11 12q24.11 BTB (POZ) domain containing 11 PWP1 12q24.11 nuclear phosphoprotein similar to S. cerevisiae PWP1 PRDM4 12q23-q24.1 PR domain containing 4 ASCL4 12q24.11 class II bHLH protein ASCL4 LOC390358 12 similar to RET finger protein-like 3 LOC390359 12 similar to programmed cell death 2 isoform 2; zinc finger protein Rp-8; programmed cell death 2/Rp8 homolog KIAA0789 12q24.11 similar to programmed cell death 2 isoform 2; zinc finger protein Rp-8; programmed cell death 2/Rp8 homolog LOC196469 12q24.11 similar to apolipoprotein B mRNA editing enzyme, catalytic polypeptide-like 3G; phorbolin-like protein MDS019 CMKLR1 12q24.1 chemokine-like receptor 1 HYPE 12q24.1 chemokine-like receptor 1 SART3 12q24.1 squamous cell carcinoma antigen recognised by T cells 3 NIFU 12-q24.1 squamous cell carcinoma antigen recognised by T cells 3 LOC338773 12q24.12 hypothetical protein LOC338773
    TRANSCRIPTS type messenger
    identificationnb exonstypebpproduct
    ProteinkDaAAspecific expressionYearPubmed
    2 - 3036 63 602 - 2001 11402071
    Type ubiquitous
       expressed in (based on citations)
    SystemOrgan level 1Organ level 2Organ level 3Organ level 4LevelPubmedSpeciesStageRna symbol
    Cardiovascularheart   highly
    Digestiveliver   highly
    Reproductivefemale systemovary  highly
    Skin/Tegumentskin   highly
    SystemTissueTissue level 1Tissue level 2LevelPubmedSpeciesStageRna symbol
    SystemCellPubmedSpeciesStageRna symbol
    Cardiovascularendothelial cell
    cell lineage
    cell lines
    at STAGE
  • a N terminal cytoplasmic domain
  • a single transmembrane domain
  • a rodlike tail sequence highly repetitive,with an heptad repeats forming an helical coiled coil structure involved in subcellular localization
  • conjugated PhosphoP
    mono polymer homomer , oligo
  • VDP/USO1/YBl047C family
  • CATEGORY structural protein
    SUBCELLULAR LOCALIZATION     plasma membrane
    intracellular,cytoplasm,organelle,endoplasmic reticulum
  • type II transmembrane protein
  • CKAP4 palmitoylation by DHHC2 is required for its trafficking from the ER to the plasma membrane and for its nuclear localization)
  • exclusively localized in sheet-like ER membranes, typical structures of the rough ER, and plays a pivotal role in the static interaction with MTs
  • basic FUNCTION
  • involved in linking the ER to microtubules, and required for protein transport from the ER to the golgi complex
  • may contribute to the functional regulation of the plasminogen activation system in the vessel wall
  • important epithelial cell receptor for APF, Antiproliferative factor (APF) is a sialoglycopeptide that is secreted by bladder cells from interstitial cystitis patients, a potent inhibitor of both normal bladder epithelial and bladder carcinoma cell proliferation
  • CKAP4-mediated stable anchoring of the ER to microtubules is required to maintain the spatial distribution of the ER during interphase and this interaction is abolished by phosphorylation of CKAP4 during mitosis
  • role of CKAP4 as an SFTPA1 receptor protein localized on the surface of lung type II cells
  • role for TP73 and CKAP4 in supporting cellular proliferation through the transcriptional activation of the genes involved in G(1)-S and G(2)-M progression
  • reversibly palmitoylated and phosphorylated protein that links the ER to the cytoskeleton
  • CELLULAR PROCESS cell organization/biogenesis
    cell communication
    a component
    small molecule
  • major substrate of the palmitoyl acyltransferase, DHHC2
  • VIMP can interact with CKAP4 and SNX5, it does not interact with MT-binding ER proteins (such as REEP1) that shape the tubular smooth ER
  • cell & other
  • microtubules
    activated by olomoucine, a CDK inhibitor (strongly up-regulates CKAP4 in a dose- and time-dependent manner solely in senescent cells)