UniProtKB - Q12979 (ABR_HUMAN)
Active breakpoint cluster region-related protein
ABR
Functioni
Protein with a unique structure having two opposing regulatory activities toward small GTP-binding proteins. The C-terminus is a GTPase-activating protein domain which stimulates GTP hydrolysis by RAC1, RAC2 and CDC42. Accelerates the intrinsic rate of GTP hydrolysis of RAC1 or CDC42, leading to down-regulation of the active GTP-bound form (PubMed:7479768, PubMed:17116687).
The central Dbl homology (DH) domain functions as guanine nucleotide exchange factor (GEF) that modulates the GTPases CDC42, RHOA and RAC1. Promotes the conversion of CDC42, RHOA and RAC1 from the GDP-bound to the GTP-bound form (PubMed:7479768).
Functions as an important negative regulator of neuronal RAC1 activity (By similarity).
Regulates macrophage functions such as CSF-1 directed motility and phagocytosis through the modulation of RAC1 activity (By similarity).
By similarity2 PublicationsGO - Molecular functioni
- GTPase activator activity Source: UniProtKB
- guanyl-nucleotide exchange factor activity Source: UniProtKB
GO - Biological processi
- activation of GTPase activity Source: UniProtKB
- modulation of chemical synaptic transmission Source: UniProtKB
- regulation of small GTPase mediated signal transduction Source: Reactome
- small GTPase mediated signal transduction Source: ProtInc
Keywordsi
Molecular function | GTPase activation, Guanine-nucleotide releasing factor |
Enzyme and pathway databases
PathwayCommonsi | Q12979 |
Reactomei | R-HSA-193648, NRAGE signals death through JNK R-HSA-416482, G alpha (12/13) signalling events R-HSA-8980692, RHOA GTPase cycle R-HSA-9013026, RHOB GTPase cycle R-HSA-9013106, RHOC GTPase cycle R-HSA-9013148, CDC42 GTPase cycle R-HSA-9013149, RAC1 GTPase cycle R-HSA-9013404, RAC2 GTPase cycle R-HSA-9013423, RAC3 GTPase cycle |
SignaLinki | Q12979 |
SIGNORi | Q12979 |
Names & Taxonomyi
Protein namesi | Recommended name: Active breakpoint cluster region-related proteinCurated |
Gene namesi | Name:ABRImported |
Organismi | Homo sapiens (Human) |
Taxonomic identifieri | 9606 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo |
Proteomesi |
|
Organism-specific databases
HGNCi | HGNC:81, ABR |
MIMi | 600365, gene |
neXtProti | NX_Q12979 |
VEuPathDBi | HostDB:ENSG00000159842 |
Subcellular locationi
Other locations
- dendritic spine By similarity
- axon By similarity
- synapse By similarity
Cytosol
- cytosol Source: Reactome
Other locations
- axon Source: UniProtKB-SubCell
- dendritic spine Source: UniProtKB-SubCell
- glutamatergic synapse Source: UniProtKB
- membrane Source: UniProtKB
- Schaffer collateral - CA1 synapse Source: UniProtKB
Keywords - Cellular componenti
Cell junction, Cell projection, SynapsePathology & Biotechi
Mutagenesis
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Mutagenesisi | 683 | R → A: Reduces GAP activity. Loss of GAP activity; when associated with A-795. 1 Publication | 1 | |
Mutagenesisi | 795 | N → A: Loss of GAP activity; when associated with A-683. 1 Publication | 1 | |
Mutagenesisi | 859 | V → A: Abolishes interaction with DLG4. No effect on synaptic localization. 1 Publication | 1 |
Organism-specific databases
DisGeNETi | 29 |
OpenTargetsi | ENSG00000159842 |
PharmGKBi | PA24417 |
Miscellaneous databases
Pharosi | Q12979, Tbio |
Genetic variation databases
BioMutai | ABR |
DMDMi | 357528764 |
PTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000080902 | 1 – 859 | Active breakpoint cluster region-related proteinAdd BLAST | 859 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Modified residuei | 57 | PhosphoserineBy similarity | 1 |
Keywords - PTMi
PhosphoproteinProteomic databases
EPDi | Q12979 |
jPOSTi | Q12979 |
MassIVEi | Q12979 |
MaxQBi | Q12979 |
PaxDbi | Q12979 |
PeptideAtlasi | Q12979 |
PRIDEi | Q12979 |
ProteomicsDBi | 26359 27736 59072 [Q12979-1] 59073 [Q12979-2] |
PTM databases
iPTMneti | Q12979 |
PhosphoSitePlusi | Q12979 |
Expressioni
Tissue specificityi
Gene expression databases
Bgeei | ENSG00000159842, Expressed in frontal cortex and 241 other tissues |
ExpressionAtlasi | Q12979, baseline and differential |
Genevisiblei | Q12979, HS |
Organism-specific databases
HPAi | ENSG00000159842, Low tissue specificity |
Interactioni
Subunit structurei
Interacts with DLG4.
1 PublicationProtein-protein interaction databases
BioGRIDi | 106547, 26 interactors |
IntActi | Q12979, 7 interactors |
MINTi | Q12979 |
STRINGi | 9606.ENSP00000303909 |
Miscellaneous databases
RNActi | Q12979, protein |
Family & Domainsi
Domains and Repeats
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Domaini | 91 – 284 | DHPROSITE-ProRule annotationAdd BLAST | 194 | |
Domaini | 301 – 459 | PHPROSITE-ProRule annotationAdd BLAST | 159 | |
Domaini | 484 – 613 | C2PROSITE-ProRule annotationAdd BLAST | 130 | |
Domaini | 647 – 845 | Rho-GAPPROSITE-ProRule annotationAdd BLAST | 199 |
Region
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Regioni | 26 – 84 | DisorderedSequence analysisAdd BLAST | 59 |
Compositional bias
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Compositional biasi | 50 – 68 | Polar residuesSequence analysisAdd BLAST | 19 |
Domaini
Phylogenomic databases
eggNOGi | KOG4269, Eukaryota |
GeneTreei | ENSGT00940000153491 |
HOGENOMi | CLU_004000_1_0_1 |
InParanoidi | Q12979 |
OMAi | TMFYKIP |
OrthoDBi | 762492at2759 |
PhylomeDBi | Q12979 |
TreeFami | TF105082 |
Family and domain databases
CDDi | cd13366, PH_ABR, 1 hit cd00160, RhoGEF, 1 hit |
Gene3Di | 1.10.555.10, 1 hit 1.20.900.10, 1 hit 2.30.29.30, 1 hit 2.60.40.150, 1 hit |
InterProi | View protein in InterPro IPR037769, Abr/Bcr IPR037865, ABR_PH IPR000008, C2_dom IPR035892, C2_domain_sf IPR035899, DBL_dom_sf IPR000219, DH-domain IPR001331, GDS_CDC24_CS IPR011993, PH-like_dom_sf IPR001849, PH_domain IPR008936, Rho_GTPase_activation_prot IPR000198, RhoGAP_dom |
PANTHERi | PTHR23182, PTHR23182, 1 hit |
Pfami | View protein in Pfam PF00168, C2, 1 hit PF00169, PH, 1 hit PF00620, RhoGAP, 1 hit PF00621, RhoGEF, 1 hit |
SMARTi | View protein in SMART SM00239, C2, 1 hit SM00233, PH, 1 hit SM00324, RhoGAP, 1 hit SM00325, RhoGEF, 1 hit |
SUPFAMi | SSF48065, SSF48065, 1 hit SSF48350, SSF48350, 1 hit SSF49562, SSF49562, 1 hit |
PROSITEi | View protein in PROSITE PS50004, C2, 1 hit PS00741, DH_1, 1 hit PS50010, DH_2, 1 hit PS50003, PH_DOMAIN, 1 hit PS50238, RHOGAP, 1 hit |
s (4+)i Sequence
Sequence statusi: Complete.
This entry describes 4 produced by isoformsialternative splicing. AlignAdd to basketThis entry has 4 described isoforms and 21 potential isoforms that are computationally mapped.Show allAlign All
This isoform has been chosen as the sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. canonicali
10 20 30 40 50
MEPLSHRGLP RLSWIDTLYS NFSYGTDEYD GEGNEEQKGP PEGSETMPYI
60 70 80 90 100
DESPTMSPQL SARSQGGGDG VSPTPPEGLA PGVEAGKGLE MRKLVLSGFL
110 120 130 140 150
ASEEIYINQL EALLLPMKPL KATATTSQPV LTIQQIETIF YKIQDIYEIH
160 170 180 190 200
KEFYDNLCPK VQQWDSQVTM GHLFQKLASQ LGVYKAFVDN YKVALETAEK
210 220 230 240 250
CSQSNNQFQK ISEELKVKGP KDSKDSHTSV TMEALLYKPI DRVTRSTLVL
260 270 280 290 300
HDLLKHTPVD HPDYPLLQDA LRISQNFLSS INEDIDPRRT AVTTPKGETR
310 320 330 340 350
QLVKDGFLVE VSESSRKLRH VFLFTDVLLC AKLKKTSAGK HQQYDCKWYI
360 370 380 390 400
PLADLVFPSP EESEASPQVH PFPDHELEDM KMKISALKSE IQKEKANKGQ
410 420 430 440 450
SRAIERLKKK MFENEFLLLL NSPTIPFRIH NRNGKSYLFL LSSDYERSEW
460 470 480 490 500
REAIQKLQKK DLQAFVLSSV ELQVLTGSCF KLRTVHNIPV TSNKDDDESP
510 520 530 540 550
GLYGFLHVIV HSAKGFKQSA NLYCTLEVDS FGYFVSKAKT RVFRDTAEPK
560 570 580 590 600
WDEEFEIELE GSQSLRILCY EKCYDKTKVN KDNNEIVDKI MGKGQIQLDP
610 620 630 640 650
QTVETKNWHT DVIEMNGIKV EFSMKFTSRD MSLKRTPSKK QTGVFGVKIS
660 670 680 690 700
VVTKRERSKV PYIVRQCVEE VEKRGIEEVG IYRISGVATD IQALKAVFDA
710 720 730 740 750
NNKDILLMLS DMDINAIAGT LKLYFRELPE PLLTDRLYPA FMEGIALSDP
760 770 780 790 800
AAKENCMMHL LRSLPDPNLI TFLFLLEHLK RVAEKEPINK MSLHNLATVF
810 820 830 840 850
GPTLLRPSEV ESKAHLTSAA DIWSHDVMAQ VQVLLYYLQH PPISFAELKR
NTLYFSTDV
The sequence of this isoform differs from the canonical sequence as follows:
1-82: MEPLSHRGLP...PTPPEGLAPG → MEEEEEAIGL...SGSPFLVAVK
Computationally mapped potential isoform sequencesi
There are 21 potential isoforms mapped to this entry.BLASTAlignShow allAdd to basketA0A1C7CYZ0 | A0A1C7CYZ0_HUMAN | Active breakpoint cluster region-re... | ABR | 871 | Annotation score: | ||
I3L4Y1 | I3L4Y1_HUMAN | Active breakpoint cluster region-re... | ABR | 1,118 | Annotation score: | ||
B7Z683 | B7Z683_HUMAN | Active breakpoint cluster region-re... | ABR | 641 | Annotation score: | ||
A0A0G2JQ41 | A0A0G2JQ41_HUMAN | Active breakpoint cluster region-re... | ABR | 777 | Annotation score: | ||
I3L3W0 | I3L3W0_HUMAN | Active breakpoint cluster region-re... | ABR | 133 | Annotation score: | ||
I3L259 | I3L259_HUMAN | Active breakpoint cluster region-re... | ABR | 86 | Annotation score: | ||
I3L2L3 | I3L2L3_HUMAN | Active breakpoint cluster region-re... | ABR | 88 | Annotation score: | ||
A0A0G2JQB5 | A0A0G2JQB5_HUMAN | Active breakpoint cluster region-re... | ABR | 129 | Annotation score: | ||
I3NI05 | I3NI05_HUMAN | Active breakpoint cluster region-re... | ABR | 191 | Annotation score: | ||
I3L2C0 | I3L2C0_HUMAN | Active breakpoint cluster region-re... | ABR | 153 | Annotation score: | ||
There are more potential isoformsShow all |
Experimental Info
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Sequence conflicti | 67 | G → R in AAC50063 (PubMed:8262969).Curated | 1 | |
Sequence conflicti | 483 | R → K in BAG54051 (PubMed:14702039).Curated | 1 | |
Sequence conflicti | 625 | K → R in BAH13263 (PubMed:14702039).Curated | 1 | |
Sequence conflicti | 657 – 660 | RSKV → VQGA in AAC37519 (PubMed:8349582).Curated | 4 | |
Sequence conflicti | 761 | L → V in AAC37519 (PubMed:8349582).Curated | 1 |
Natural variant
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Natural variantiVAR_057186 | 517 | K → R1 PublicationCorresponds to variant dbSNP:rs34169260Ensembl. | 1 |
Alternative sequence
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Alternative sequenceiVSP_001815 | 1 – 82 | MEPLS…GLAPG → MEEEEEAIGLLDKVLEDEDV FLLEECELGTPTSPGSGSPF LVAVK in isoform Short. CuratedAdd BLAST | 82 | |
Alternative sequenceiVSP_046029 | 1 – 48 | MEPLS…SETMP → MTDVLPQPDCSPKAGREPLA LEESGSKRPPNTGARLWGRV RNKLLRNK in isoform 3. 1 PublicationAdd BLAST | 48 | |
Alternative sequenceiVSP_046148 | 1 – 46 | Missing in isoform 4. 1 PublicationAdd BLAST | 46 | |
Alternative sequenceiVSP_046030 | 49 – 597 | Missing in isoform 3. 1 PublicationAdd BLAST | 549 |
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | U01147 mRNA Translation: AAC50063.1 L19704 Genomic DNA Translation: AAC37519.1 L19705 Genomic DNA Translation: AAC37518.1 AK124547 mRNA Translation: BAG54051.1 AK300336 mRNA Translation: BAH13263.1 AC015884 Genomic DNA No translation available. AC016292 Genomic DNA No translation available. AC144836 Genomic DNA No translation available. CH471108 Genomic DNA Translation: EAW90631.1 CH471108 Genomic DNA Translation: EAW90633.1 CH471108 Genomic DNA Translation: EAW90634.1 CH471108 Genomic DNA Translation: EAW90635.1 |
CCDSi | CCDS10999.1 [Q12979-1] CCDS11000.1 [Q12979-2] CCDS54060.1 [Q12979-4] CCDS58497.1 [Q12979-3] |
PIRi | A47485 A49307 |
RefSeqi | NP_001083.2, NM_001092.4 [Q12979-2] NP_001153218.1, NM_001159746.2 [Q12979-4] NP_001243776.1, NM_001256847.2 [Q12979-3] NP_001269078.1, NM_001282149.1 NP_001309769.1, NM_001322840.1 [Q12979-4] NP_068781.2, NM_021962.4 [Q12979-1] |
Genome annotation databases
Keywords - Coding sequence diversityi
Alternative splicingSimilar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | U01147 mRNA Translation: AAC50063.1 L19704 Genomic DNA Translation: AAC37519.1 L19705 Genomic DNA Translation: AAC37518.1 AK124547 mRNA Translation: BAG54051.1 AK300336 mRNA Translation: BAH13263.1 AC015884 Genomic DNA No translation available. AC016292 Genomic DNA No translation available. AC144836 Genomic DNA No translation available. CH471108 Genomic DNA Translation: EAW90631.1 CH471108 Genomic DNA Translation: EAW90633.1 CH471108 Genomic DNA Translation: EAW90634.1 CH471108 Genomic DNA Translation: EAW90635.1 |
CCDSi | CCDS10999.1 [Q12979-1] CCDS11000.1 [Q12979-2] CCDS54060.1 [Q12979-4] CCDS58497.1 [Q12979-3] |
PIRi | A47485 A49307 |
RefSeqi | NP_001083.2, NM_001092.4 [Q12979-2] NP_001153218.1, NM_001159746.2 [Q12979-4] NP_001243776.1, NM_001256847.2 [Q12979-3] NP_001269078.1, NM_001282149.1 NP_001309769.1, NM_001322840.1 [Q12979-4] NP_068781.2, NM_021962.4 [Q12979-1] |
3D structure databases
SMRi | Q12979 |
ModBasei | Search... |
Protein-protein interaction databases
BioGRIDi | 106547, 26 interactors |
IntActi | Q12979, 7 interactors |
MINTi | Q12979 |
STRINGi | 9606.ENSP00000303909 |
PTM databases
iPTMneti | Q12979 |
PhosphoSitePlusi | Q12979 |
Genetic variation databases
BioMutai | ABR |
DMDMi | 357528764 |
Proteomic databases
EPDi | Q12979 |
jPOSTi | Q12979 |
MassIVEi | Q12979 |
MaxQBi | Q12979 |
PaxDbi | Q12979 |
PeptideAtlasi | Q12979 |
PRIDEi | Q12979 |
ProteomicsDBi | 26359 27736 59072 [Q12979-1] 59073 [Q12979-2] |
Protocols and materials databases
Antibodypediai | 22668, 75 antibodies from 19 providers |
DNASUi | 29 |
Genome annotation databases
Organism-specific databases
CTDi | 29 |
DisGeNETi | 29 |
GeneCardsi | ABR |
HGNCi | HGNC:81, ABR |
HPAi | ENSG00000159842, Low tissue specificity |
MIMi | 600365, gene |
neXtProti | NX_Q12979 |
OpenTargetsi | ENSG00000159842 |
PharmGKBi | PA24417 |
VEuPathDBi | HostDB:ENSG00000159842 |
GenAtlasi | Search... |
Phylogenomic databases
eggNOGi | KOG4269, Eukaryota |
GeneTreei | ENSGT00940000153491 |
HOGENOMi | CLU_004000_1_0_1 |
InParanoidi | Q12979 |
OMAi | TMFYKIP |
OrthoDBi | 762492at2759 |
PhylomeDBi | Q12979 |
TreeFami | TF105082 |
Enzyme and pathway databases
PathwayCommonsi | Q12979 |
Reactomei | R-HSA-193648, NRAGE signals death through JNK R-HSA-416482, G alpha (12/13) signalling events R-HSA-8980692, RHOA GTPase cycle R-HSA-9013026, RHOB GTPase cycle R-HSA-9013106, RHOC GTPase cycle R-HSA-9013148, CDC42 GTPase cycle R-HSA-9013149, RAC1 GTPase cycle R-HSA-9013404, RAC2 GTPase cycle R-HSA-9013423, RAC3 GTPase cycle |
SignaLinki | Q12979 |
SIGNORi | Q12979 |
Miscellaneous databases
BioGRID-ORCSi | 29, 11 hits in 1037 CRISPR screens |
ChiTaRSi | ABR, human |
GenomeRNAii | 29 |
Pharosi | Q12979, Tbio |
PROi | PR:Q12979 |
RNActi | Q12979, protein |
SOURCEi | Search... |
Gene expression databases
Bgeei | ENSG00000159842, Expressed in frontal cortex and 241 other tissues |
ExpressionAtlasi | Q12979, baseline and differential |
Genevisiblei | Q12979, HS |
Family and domain databases
CDDi | cd13366, PH_ABR, 1 hit cd00160, RhoGEF, 1 hit |
Gene3Di | 1.10.555.10, 1 hit 1.20.900.10, 1 hit 2.30.29.30, 1 hit 2.60.40.150, 1 hit |
InterProi | View protein in InterPro IPR037769, Abr/Bcr IPR037865, ABR_PH IPR000008, C2_dom IPR035892, C2_domain_sf IPR035899, DBL_dom_sf IPR000219, DH-domain IPR001331, GDS_CDC24_CS IPR011993, PH-like_dom_sf IPR001849, PH_domain IPR008936, Rho_GTPase_activation_prot IPR000198, RhoGAP_dom |
PANTHERi | PTHR23182, PTHR23182, 1 hit |
Pfami | View protein in Pfam PF00168, C2, 1 hit PF00169, PH, 1 hit PF00620, RhoGAP, 1 hit PF00621, RhoGEF, 1 hit |
SMARTi | View protein in SMART SM00239, C2, 1 hit SM00233, PH, 1 hit SM00324, RhoGAP, 1 hit SM00325, RhoGEF, 1 hit |
SUPFAMi | SSF48065, SSF48065, 1 hit SSF48350, SSF48350, 1 hit SSF49562, SSF49562, 1 hit |
PROSITEi | View protein in PROSITE PS50004, C2, 1 hit PS00741, DH_1, 1 hit PS50010, DH_2, 1 hit PS50003, PH_DOMAIN, 1 hit PS50238, RHOGAP, 1 hit |
MobiDBi | Search... |
Entry informationi
Entry namei | ABR_HUMAN | |
Accessioni | Q12979Primary (citable) accession number: Q12979 Secondary accession number(s): B3KW89 Q13694 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | July 15, 1999 |
Last sequence update: | November 16, 2011 | |
Last modified: | February 23, 2022 | |
This is version 193 of the entry and version 2 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Chordata Protein Annotation Program | |
Disclaimer | Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. |
Miscellaneousi
Keywords - Technical termi
Reference proteomeDocuments
- Human chromosome 17
Human chromosome 17: entries, gene names and cross-references to MIM - Human entries with genetic variants
List of human entries with genetic variants - Human variants curated from literature reports
Index of human variants curated from literature reports - MIM cross-references
Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot