STRINGSTRING
STRING protein interaction network
Nodes:
Network nodes represent proteins
splice isoforms or post-translational modifications are collapsed, i.e. each node represents all the proteins produced by a single, protein-coding gene locus.
Node Color
colored nodes:
query proteins and first shell of interactors
white nodes:
second shell of interactors
Node Content
empty nodes:
proteins of unknown 3D structure
filled nodes:
a 3D structure is known or predicted
Edges:
Edges represent protein-protein associations
associations are meant to be specific and meaningful, i.e. proteins jointly contribute to a shared function; this does not necessarily mean they are physically binding to each other.
Known Interactions
from curated databases
experimentally determined
Predicted Interactions
gene neighborhood
gene fusions
gene co-occurrence
Others
textmining
co-expression
protein homology
Your Input:
Neighborhood
Gene Fusion
Cooccurrence
Coexpression
Experiments
Databases
Textmining
[Homology]
Score
pks4Probable polyketide beta-ketoacyl synthase Pks4; Polyketide synthase involved in the biosynthesis of methyl- branched fatty acids such as mycolipanoic, mycolipenic (phthienoic) and mycolipodienoic acids required for the synthesis of a major class of polyacylated trehaloses. Catalyzes the elongation of CoA esters of long-chain fatty acids by incorporation of three methylmalonyl (but not malonyl) residues, to form trimethyl-branched fatty-acids. (1582 aa)    
Predicted Functional Partners:
pks3
Rv1180, (MTV005.16), len: 488 aa. Probable polyketide beta-ketoacyl synthase, equivalent to a predicted homologous protein from Mycobacterium smegmatis (see citation below), and similar to the N-terminus of many polyketide synthases e.g. MCAS_MYCBO|Q02251 mycocerosic acid synthase from Mycobacterium bovis (2110 aa), FASTA scores: opt: 2115, E(): 0, (66.5% identity in 472 aa overlap). Also similar to, and same length as P96284|Z83858|MTCY24G1.02 M. tuberculosis (496 aa), FASTA scores: opt: 1424, E(): 0, (50.9% identity in 444 aa overlap). Contains possible signal sequence and PS00013 Pr [...]
 0.999
fas
Rv2524c, (MTCY159.32, MTV009.09c), len: 3069 aa. Probable fas, Fatty Acid Synthase, equivalent to Q9X7E2|fas|ML1191 putative type I fatty acid synthase from Mycobacterium leprae (3076 aa), FASTA scores: opt: 17484,E(): 0, (85.8% identity in 3081 aa overlap). Also similar to others e.g. Q04846|fas|Q59497 from Corynebacterium ammoniagenes (Brevibacterium ammoniagenes) (3104 aa), FASTA scores: opt: 3981, E(): 5.5e-203, (49.8% identity in 3099 aa overlap); Q48926|fas from Mycobacterium bovis (2796 aa),FASTA scores: opt: 2098, E(): 3.9e-103, (59.7% identity in 2862 aa overlap) (see Fernande [...]
  
 0.999
papA3
Probable conserved polyketide synthase associated protein PapA3; Involved in the biosynthesis of polyacyltrehalose (PAT) which could have a role in anchoring the bacterial capsule. In vitro catalyzes the sequential transfer of two palmitoyl groups onto a single glucose residue of trehalose generating the diacylated product 2,3- diacyltrehalose (trehalose dipalmitate). Although palmitoyl-CoA (PCoA) seems to be the physiological acyl donor, PapA3 can also use docosanoyl (22-carbon saturated fatty acid) coenzyme A as acyl donor.
 
 
 0.997
mbtB
Phenyloxazoline synthase MbtB (phenyloxazoline synthetase); Involved in the initial steps of the mycobactin biosynthetic pathway. Putatively couples activated salicylic acid with serine or threonine and cyclizes this precursor to the hydroxyphenyloxazoline ring system present in this class of siderophores. Essential for growth in macrophages; Belongs to the ATP-dependent AMP-binding enzyme family. MbtB subfamily.
 
 
 0.993
ppsC
Phenolpthiocerol synthesis type-I polyketide synthase PpsC; Involved in the elongation of either C22-24 fatty acids by the addition of malonyl-CoA and methylmalonyl-CoA extender units to yield phthiocerol derivatives.
 
0.990
pks2
Polyketide synthase Pks2; Catalyzes the synthesis of the hepta- and octamethyl phthioceranic acids and/or hydroxyphthioceranic acids that are the major acyl constituents of sulfolipids.
 
 
0.988
pks15
Rv2947c, (MTCY24G1.02), len: 496 aa. Probable pks15,polyketide synthase. Almost identical to G560508|Q50469 PKS002B protein from Mycobacterium tuberculosis (495 aa),FASTA scores: opt: 3270, E(): 0, (99.6% identity in 496 a a overlap). Similar to Mycobacterium tuberculosis proteins MTCY338.20|RV2931|PPSA_MYCTU ppsA phenolpthiocerol synthesis (1876 aa) (49.9% identity in 465 aa overlap); MTCY24G1.09|RV2940C|P96291 Putative mas, mycocerosic acid synthase (2111 aa) (50.2% identity in 454 aa overlap); and MTCY22H8.03|RV2382C|P71718 hypothetical protein (444 aa) (47.6% identity in 437 aa ove [...]
 
 0.982
fabD
Rv2243, (MTCY427.24), len: 302 aa. FabD (alternate gene name: mtFabD), malonyl CoA-acyl carrier protein transacylase (see citations below), highly similar to e.g. A57356 acyl-CoA carrier protein malonyltransferase from Streptomyces coelicolor (316 aa), FASTA score: opt: 955,E(): 0, (52.6% identity in 304 aa overlap); FABD_HAEIN|P43712 malonyl CoA-acyl carrier protein transacylase from Haemophilus influenzae, FASTA score: (30.5% identity in 308 aa overlap); and FABD_ECOLI|P25715 from Escherichia coli, FASTA score: (31.4% identity in 309 aa overlap). Identified as a substrate for proteas [...]
  
 0.971
pks12
Polyketide synthase Pks12; Rv2048c, (MTV018.35c), len: 4151 aa. Pks12,polyketide synthase similar to many. Contains 2x PS00012 Phosphopantetheine attachment site, 2x PS00606 Beta-ketoacyl synthases active site, and PS00343 Gram-positive cocci surface proteins 'anchoring' hexapeptide. Nucleotide position 2297976 in the genome sequence has been corrected, G:A resulting in S3004L.
 
 
0.969
nrp
Rv0101, (MTCY251.20), len: 2512 aa. Probable nrp,peptide synthetase, similar to others e.g. AAD44234.1|AF143772_40|PstB peptide synthetase from Mycobacterium avium (2552 aa); 7476034|S77657 cyclic peptide synthetase from Mycobacterium leprae (1401 aa),FASTA scores: opt: 4268, E(): 0, (65.7% identity in 1091 aa overlap); part of CAB55600.1|AJ238027 peptide synthetase from Mycobacterium smegmatis (5990). Also similar to e.g. AAD56240.1|AF184977_1|AF184977 DhbF protein from Bacillus subtilis (2378 aa); SRF1_BACSU|P27206 surfactin synthetase subunit 1 (3587 aa), FASTA scores: opt: 1708, E( [...]
 
 
 0.968
Your Current Organism:
Mycobacterium tuberculosis H37Rv
NCBI taxonomy Id: 83332
Other names: M. tuberculosis H37Rv, Mycobacterium sp. H37Rv, Mycobacterium tuberculosis str. H37Rv, Mycobacterium tuberculosis strain H37Rv
Server load: medium (48%) [HD]