Descriptions

EB1 including a Calponin homology (CH) domain and the C-terminal dimerization domain is a plus-end tracking protein that binds to the plus-end of microtubules (MT) and regulates the dynamics of the microtubule cytoskeleton. The CH domain is responsible for MT-binding and inhibited by the binding of the CH domain and the central region of the C-terminal domain including the FYF motif. SxIP competes with the CH domain and binds on the FYF motif of the C-terminal domain, and activates the CH domain.

Autoinhibitory domains (AIDs)

Target domain

1-130 (CH domain)

Relief mechanism

Partner binding

Assay

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

1 structures for Q6P848

Entry ID Method Resolution Chain Position Source
AF-Q6P848-F1 Predicted AlphaFoldDB

No variants for Q6P848

Variant ID(s) Position Change Description Diseaes Association Provenance
No variants for Q6P848

No associated diseases with Q6P848

2 regional properties for Q6P848

Type Name Position InterPro Accession
domain Calponin homology domain 14 - 117 IPR001715
domain EB1, C-terminal 186 - 256 IPR004953

Functions

Description
EC Number
Subcellular Localization
  • Cytoplasm, cytoskeleton
  • Cytoplasm, cytoskeleton, microtubule organizing center, centrosome
  • Golgi apparatus
  • Cytoplasm, cytoskeleton, spindle
  • Cytoplasm, cytoskeleton, spindle pole
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

8 GO annotations of cellular component

Name Definition
centrosome A structure comprised of a core structure (in most organisms, a pair of centrioles) and peripheral material from which a microtubule-based structure, such as a spindle apparatus, is organized. Centrosomes occur close to the nucleus during interphase in many eukaryotic cells, though in animal cells it changes continually during the cell-division cycle.
cortical microtubule cytoskeleton The portion of the microtubule cytoskeleton that lies just beneath the plasma membrane.
cytoplasmic microtubule Any microtubule in the cytoplasm of a cell.
Golgi apparatus A membrane-bound cytoplasmic organelle of the endomembrane system that further processes the core oligosaccharides (e.g. N-glycans) added to proteins in the endoplasmic reticulum and packages them into membrane-bound vesicles. The Golgi apparatus operates at the intersection of the secretory, lysosomal, and endocytic pathways.
microtubule Any of the long, generally straight, hollow tubes of internal diameter 12-15 nm and external diameter 24 nm found in a wide variety of eukaryotic cells; each consists (usually) of 13 protofilaments of polymeric tubulin, staggered in such a manner that the tubulin monomers are arranged in a helical pattern on the microtubular surface, and with the alpha/beta axes of the tubulin subunits parallel to the long axis of the tubule; exist in equilibrium with pool of tubulin monomers and can be rapidly assembled or disassembled in response to physiological stimuli; concerned with force generation, e.g. in the spindle.
microtubule plus-end The growing (plus) end of a microtubule. In vitro, microtubules polymerize more quickly at the plus end than at the minus end. In vivo, microtubule growth occurs only at the plus end, and the plus end switches between periods of growth and shortening, a behavior known as dynamic instability.
mitotic spindle pole Either of the ends of a mitotic spindle, a spindle that forms as part of mitosis, where spindle microtubules are organized; usually contains a microtubule organizing center and accessory molecules, spindle microtubules and astral microtubules.
spindle midzone The area in the center of the spindle where the spindle microtubules from opposite poles overlap.

1 GO annotations of molecular function

Name Definition
microtubule plus-end binding Binding to the plus end of a microtubule.

7 GO annotations of biological process

Name Definition
attachment of mitotic spindle microtubules to kinetochore The cell cycle process in which spindle microtubules become physically associated with the proteins making up the kinetochore complex as part of mitotic metaphase plate congression.
cell division The process resulting in division and partitioning of components of a cell to form more cells; may or may not be accompanied by the physical separation of a cell into distinct, individually membrane-bounded daughter cells.
establishment of mitotic spindle orientation A cell cycle process that sets the alignment of mitotic spindle relative to other cellular structures.
negative regulation of microtubule polymerization Any process that stops, prevents, or reduces the frequency, rate or extent of microtubule polymerization.
protein localization to astral microtubule A process in which a protein is transported to, or maintained in, a location within an astral microtubule.
protein localization to microtubule A process in which a protein is transported to, or maintained at, a microtubule.
spindle assembly The aggregation, arrangement and bonding together of a set of components to form the spindle, the array of microtubules and associated molecules that serves to move duplicated chromosomes apart.

12 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
Q3ZBD9 MAPRE1 Microtubule-associated protein RP/EB family member 1 Bos taurus (Bovine) SS
Q5ZLC7 MAPRE1 Microtubule-associated protein RP/EB family member 1 Gallus gallus (Chicken) SS
Q15555 MAPRE2 Microtubule-associated protein RP/EB family member 2 Homo sapiens (Human) PR
Q9UPY8 MAPRE3 Microtubule-associated protein RP/EB family member 3 Homo sapiens (Human) SS
Q15691 MAPRE1 Microtubule-associated protein RP/EB family member 1 Homo sapiens (Human) EV
Q8R001 Mapre2 Microtubule-associated protein RP/EB family member 2 Mus musculus (Mouse) PR
Q61166 Mapre1 Microtubule-associated protein RP/EB family member 1 Mus musculus (Mouse) SS
Q6PER3 Mapre3 Microtubule-associated protein RP/EB family member 3 Mus musculus (Mouse) SS
Q5XIT1 Mapre3 Microtubule-associated protein RP/EB family member 3 Rattus norvegicus (Rat) SS
Q66HR2 Mapre1 Microtubule-associated protein RP/EB family member 1 Rattus norvegicus (Rat) SS
Q7XJ60 EB1A Microtubule-associated protein RP/EB family member 1A Arabidopsis thaliana (Mouse-ear cress) SS
Q9FJJ5 EB1B Microtubule-associated protein RP/EB family member 1B Arabidopsis thaliana (Mouse-ear cress) EV
10 20 30 40 50 60
MAVNVYSTSV TSDNLSRHDM LAWINESLQL NLTKIEQLCS GSVYCQFMDM LFPGSVVLKK
70 80 90 100 110 120
VKFQAKLEHE YIQNFKVLQA GFKKMGVDKI IPVDKLVKGK FQDNFEFVQW FKKFFDANYD
130 140 150 160 170 180
GKDYDPVAAR QGQESAPVPV LAAPVLNKPK KPLGSGNTAP QRTVPVQRTA VSNKPPAQGI
190 200 210 220 230 240
SKKPATVGNG DDESAELIQQ INVLKITVED LEKERDFYFG KLRNIELICQ ENEGESDPVL
250 260
QRIIEILYAT DEGFVIPDEG APPEDQEEY