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 Q5XIT1

Entry ID Method Resolution Chain Position Source
AF-Q5XIT1-F1 Predicted AlphaFoldDB

No variants for Q5XIT1

Variant ID(s) Position Change Description Diseaes Association Provenance
No variants for Q5XIT1

No associated diseases with Q5XIT1

2 regional properties for Q5XIT1

Type Name Position InterPro Accession
domain Calponin homology domain 14 - 118 IPR001715
domain EB1, C-terminal 194 - 264 IPR004953

Functions

Description
EC Number
Subcellular Localization
  • Cytoplasm, cytoskeleton
  • Associated with the microtubule network
  • Detected at the plus end of microtubules
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

8 GO annotations of cellular component

Name Definition
cytoplasm The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
cytoplasmic microtubule Any microtubule in the cytoplasm of a cell.
microtubule cytoskeleton The part of the cytoskeleton (the internal framework of a cell) composed of microtubules and associated proteins.
microtubule organizing center An intracellular structure that can catalyze gamma-tubulin-dependent microtubule nucleation and that can anchor microtubules by interacting with their minus ends, plus ends or sides.
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.
midbody A thin cytoplasmic bridge formed between daughter cells at the end of cytokinesis. The midbody forms where the contractile ring constricts, and may persist for some time before finally breaking to complete cytokinesis.
mitotic spindle astral microtubule end Any microtubule end that is part of a mitotic spindle astral microtubule.
spindle midzone The area in the center of the spindle where the spindle microtubules from opposite poles overlap.

4 GO annotations of molecular function

Name Definition
identical protein binding Binding to an identical protein or proteins.
microtubule binding Binding to a microtubule, a filament composed of tubulin monomers.
microtubule plus-end binding Binding to the plus end of a microtubule.
protein kinase binding Binding to a protein kinase, any enzyme that catalyzes the transfer of a phosphate group, usually from ATP, to a protein substrate.

6 GO annotations of biological process

Name Definition
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.
positive regulation of DNA-templated transcription Any process that activates or increases the frequency, rate or extent of cellular DNA-templated transcription.
protein localization to microtubule A process in which a protein is transported to, or maintained at, a microtubule.
regulation of microtubule polymerization Any process that modulates the frequency, rate or extent of microtubule polymerization.
regulation of microtubule polymerization or depolymerization Any process that modulates the frequency, rate or extent of microtubule polymerization or depolymerization by the addition or removal of tubulin heterodimers from 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
Q15691 MAPRE1 Microtubule-associated protein RP/EB family member 1 Homo sapiens (Human) EV
Q9UPY8 MAPRE3 Microtubule-associated protein RP/EB family member 3 Homo sapiens (Human) SS
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
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
Q6P848 mapre1 Microtubule-associated protein RP/EB family member 1 Xenopus tropicalis (Western clawed frog) (Silurana tropicalis) SS
10 20 30 40 50 60
MAVNVYSTSV TSENLSRHDM LAWVNDSLHL NYTKIEQLCS GAAYCQFMDM LFPGCVHLRK
70 80 90 100 110 120
VKFQAKLEHE YIHNFKVLQA AFKKMGVDKI IPVEKLVKGK FQDNFEFIQW FKKFFDANYD
130 140 150 160 170 180
GKDYNPLLAR QGQDVAPPPN PGDQIFNKSK KLIGTAVPQR TSPTGPKNMQ TSGRLSNVAP
190 200 210 220 230 240
PCILRKNPPS ARNGGHEADA QILELNQQLL DLKLTVDGLE KERDFYFSKL RDIELICQEH
250 260 270 280
ESENSPVISG IIGILYATEE GFAPPEDDEI EEHQQEDQDE Y