UniProtKB - Q06947 (A85B_MYCAV)
Diacylglycerol acyltransferase/mycolyltransferase Ag85B
fbpB
Functioni
The antigen 85 proteins (FbpA, FbpB, FbpC) are responsible for the high affinity of mycobacteria for fibronectin, a large adhesive glycoprotein, which facilitates the attachment of M.tuberculosis to murine alveolar macrophages (AMs). They also help to maintain the integrity of the cell wall by catalyzing the transfer of mycolic acids to cell wall arabinogalactan and through the synthesis of alpha,alpha-trehalose dimycolate (TDM, cord factor). They catalyze the transfer of a mycoloyl residue from one molecule of alpha,alpha-trehalose monomycolate (TMM) to another TMM, leading to the formation of TDM (By similarity).
By similarityCatalytic activityi
Sites
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Active sitei | 166 | NucleophileBy similarity | 1 | |
Binding sitei | 166 | SubstrateBy similarity | 1 | |
Binding sitei | 194 | SubstrateBy similarity | 1 | |
Active sitei | 270 | By similarity | 1 | |
Binding sitei | 279 | SubstrateBy similarity | 1 | |
Active sitei | 302 | By similarity | 1 |
GO - Molecular functioni
- diacylglycerol O-acyltransferase activity Source: UniProtKB-EC
- trehalose O-mycolyltransferase activity Source: UniProtKB-EC
Keywordsi
Molecular function | Acyltransferase, Transferase |
Protein family/group databases
ESTHERi | mycav-a85b, A85-Mycolyl-transferase |
Names & Taxonomyi
Protein namesi | Recommended name: Diacylglycerol acyltransferase/mycolyltransferase Ag85B (EC:2.3.1.122, EC:2.3.1.20)Short name: DGAT Alternative name(s): 30 kDa extracellular protein Acyl-CoA:diacylglycerol acyltransferase Antigen 85 complex B Short name: 85B Short name: Ag85B Extracellular alpha-antigen Fibronectin-binding protein B Short name: Fbps B |
Gene namesi | Name:fbpB |
Organismi | Mycobacterium avium |
Taxonomic identifieri | 1764 [NCBI] |
Taxonomic lineagei | Bacteria › Actinobacteria › Corynebacteriales › Mycobacteriaceae › Mycobacterium › Mycobacterium avium complex (MAC) |
Subcellular locationi
Extracellular region or secreted
- Secreted By similarity
Extracellular region or secreted
- extracellular region Source: UniProtKB-SubCell
Keywords - Cellular componenti
SecretedPTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Signal peptidei | 1 – 40 | By similarityAdd BLAST | 40 | |
ChainiPRO_0000000216 | 41 – 330 | Diacylglycerol acyltransferase/mycolyltransferase Ag85BAdd BLAST | 290 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Disulfide bondi | 127 ↔ 132 | By similarity |
Keywords - PTMi
Disulfide bondFamily & Domainsi
Region
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Regioni | 82 – 83 | Substrate bindingBy similarity | 2 | |
Regioni | 98 – 108 | Fibronectin-bindingAdd BLAST | 11 | |
Regioni | 272 – 275 | Substrate bindingBy similarity | 4 | |
Regioni | 302 – 304 | Substrate bindingBy similarity | 3 |
Sequence similaritiesi
Keywords - Domaini
SignalFamily and domain databases
Gene3Di | 3.40.50.1820, 1 hit |
InterProi | View protein in InterPro IPR029058, AB_hydrolase IPR000801, Esterase-like |
Pfami | View protein in Pfam PF00756, Esterase, 1 hit |
SUPFAMi | SSF53474, SSF53474, 1 hit |
i Sequence
Sequence statusi: Complete.
: The displayed sequence is further processed into a mature form. Sequence processingi
10 20 30 40 50
MTDLSEKVRA WGRRLLVGAA AAVTLPGLIG LAGGAATANA FSRPGLPVEY
60 70 80 90 100
LQVPSAGMGR DIKVQFQSGG NGSPAVYLLD GLRAQDDYNG WDINTPAFEW
110 120 130 140 150
YYQSGLSVIM PVGGQSSFYA DWYQPACGKA GCSTYKWETF LTSELPSYLA
160 170 180 190 200
SNKGVKRTGN AAVGISMSGS SAMILAVNHP DQFIYAGSLS ALLDPSQGMG
210 220 230 240 250
PSLIGLAMGD AGGYKADAMW GPSSDPAWQR NDPSLHIPEL VGHNTRLWLY
260 270 280 290 300
CGNGTPSELG GANMPAEFLE NFVRSSNLKF QDAYNGAGGH NAVFNFNANG
310 320 330
THSWEYWGAQ LNAMKPDLQG TLGASPGGGG
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | X63437 Genomic DNA Translation: CAA45032.1 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | X63437 Genomic DNA Translation: CAA45032.1 |
3D structure databases
SMRi | Q06947 |
ModBasei | Search... |
Protein family/group databases
ESTHERi | mycav-a85b, A85-Mycolyl-transferase |
Family and domain databases
Gene3Di | 3.40.50.1820, 1 hit |
InterProi | View protein in InterPro IPR029058, AB_hydrolase IPR000801, Esterase-like |
Pfami | View protein in Pfam PF00756, Esterase, 1 hit |
SUPFAMi | SSF53474, SSF53474, 1 hit |
MobiDBi | Search... |
Entry informationi
Entry namei | A85B_MYCAV | |
Accessioni | Q06947Primary (citable) accession number: Q06947 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | February 1, 1995 |
Last sequence update: | February 1, 1995 | |
Last modified: | September 29, 2021 | |
This is version 72 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Prokaryotic Protein Annotation Program |