bacitracin B
antibioticmech:aro-d2b8d66d15
·ANTIBACTERIAL
·MINTED
SEEDED
Bacitracin B is a component of bacitracin, an antibiotic mixture that interferes with bacterial cell wall synthesis. It differs from Bacitracin A with a valine instead of an isoleucine in its peptide. — PMID:6752975
Machine-generated and unreviewed. Identity, structure and
cross-references come straight from ChEBI's and CARD's own data; no curator has
signed off on this record yet.
Classification
nonribosomal peptide antibioticsARO:3009657
Strictly broader compounds or drug classes this molecule belongs to.
Chemical structure
Computed structure properties
| Molecular formula | C65H101N17O16S |
|---|
| Charge | 0 |
|---|
| Average mass | 1408.7 Da |
|---|
| Monoisotopic mass | 1407.73329138 Da |
|---|
| Source | PubChem · retrieved 2026-08-29 |
|---|
| InChIKey | CDTJNKFURPZXMS-LRBSCOJMSA-N |
|---|
SMILES
CC[C@@H](C)[C@H](C1=N[C@@H](CS1)C(=O)N[C@H](CC(C)C)C(=O)N[C@H](CCC(=O)O)C(=O)N[C@H]([C@H](C)CC)C(=O)N[C@@H]2CCCCNC(=O)[C@@H](NC(=O)[C@H](NC(=O)C(NC(=O)[C@H](NC(=O)[C@@H](NC(=O)[C@H](NC2=O)CCCN)C(C)C)CC3=CC=CC=C3)CC4=CN=CN4)CC(=O)O)CC(=O)N)N
InChI
InChI=1S/C65H101N17O16S/c1-9-35(7)51(68)65-80-47(31-99-65)62(96)75-42(25-33(3)4)58(92)73-41(21-22-49(84)85)57(91)82-53(36(8)10-2)64(98)74-39-19-14-15-24-70-54(88)45(28-48(67)83)77-61(95)46(29-50(86)87)78-60(94)44(27-38-30-69-32-71-38)76-59(93)43(26-37-17-12-11-13-18-37)79-63(97)52(34(5)6)81-56(90)40(20-16-23-66)72-55(39)89/h11-13,17-18,30,32-36,39-47,51-53H,9-10,14-16,19-29,31,66,68H2,1-8H3,(H2,67,83)(H,69,71)(H,70,88)(H,72,89)(H,73,92)(H,74,98)(H,75,96)(H,76,93)(H,77,95)(H,78,94)(H,79,97)(H,81,90)(H,82,91)(H,84,85)(H,86,87)/t35-,36-,39-,40-,41-,42-,43-,44?,45+,46-,47+,51-,52+,53-/m1/s1
Cross-references
Equivalent identifiers for this same structure in other resources.
Source concepts
Every upstream concept that resolved to this record. The merge is
the product: this is what shows ChEBI and CARD are describing the same structure.
Upstream concepts merged into this record
| Source | Native ID | Label | Minted CURIE | Version |
|---|
| ARO |
ARO:3000630 |
bacitracin B |
antibioticmech:aro-d2b8d66d15 |
2026-08-30 |
Molecular targets
The molecular entity or process this compound acts on. Each target
carries evidence — this is a mechanistic claim, not a classification.
bacitracin sensitive isoprenyl pyrophosphate CELL_WALL_COMPONENT ATTACKED_COMPONENT
ARO:3000719
CARD/ARO database assertion; target organism, strain, and assay are not specified. Isoprenyl pyrophosphate is a cell-wall carrier intermediate rather than a protein. Evidence status: DATABASE_ASSERTION_ONLY. Source: CARD_ARO 2026-08-30 (retrieved 2026-08-30).
- ARO:3000719 (CARD/ARO asserts targeted_by_antibiotic ARO:3000630 (bacitracin B); database assertion, not a primary citation.)
undecaprenyl pyrophosphate CELL_WALL_COMPONENT ATTACKED_COMPONENT
ARO:3003251
CARD/ARO database assertion; target organism, strain, and assay are not specified. Undecaprenyl pyrophosphate is a cell-wall carrier intermediate. Evidence status: DATABASE_ASSERTION_ONLY. Source: CARD_ARO 2026-08-30 (retrieved 2026-08-30).
- ARO:3003251 (CARD/ARO asserts targeted_by_antibiotic ARO:3000630 (bacitracin B); database assertion, not a primary citation.)
Resistance mechanisms
4 known routes by which microbes
resist this compound, grounded in ARO where CARD models them. Grouped by mechanism
type — expand a group to see its determinants.
ANTIBIOTIC_EFFLUX 2
ANTIBIOTIC_EFFLUX
| Determinant | ARO ID | Organism | Gene families | Evidence |
|---|
| bcrA |
ARO:3002987 |
not organism-specific |
— |
- ARO:3002987 (CARD/ARO asserts confers_resistance_to_antibiotic ARO:3000630 (bacitracin B); database assertion, not a primary citation.)
|
| bcrB |
ARO:3002988 |
not organism-specific |
— |
- ARO:3002988 (CARD/ARO asserts confers_resistance_to_antibiotic ARO:3000630 (bacitracin B); database assertion, not a primary citation.)
|
ANTIBIOTIC_TARGET_ALTERATION 2
ANTIBIOTIC_TARGET_ALTERATION
| Determinant | ARO ID | Organism | Gene families | Evidence |
|---|
| bacA |
ARO:3002986 |
not organism-specific |
— |
- ARO:3002986 (CARD/ARO asserts confers_resistance_to_antibiotic ARO:3000630 (bacitracin B); database assertion, not a primary citation.)
|
| bcrC |
ARO:3003250 |
not organism-specific |
— |
- ARO:3003250 (CARD/ARO asserts confers_resistance_to_antibiotic ARO:3000630 (bacitracin B); database assertion, not a primary citation.)
|
Curation history
-
SEEDED_FROM_SOURCES
2026-08-30 · seed_from_sources
Seeded from data/raw/ inventories (ARO)
-
RESEEDED_FROM_SOURCES
2026-08-30 · seed_from_sources
Re-seeded from updated data/raw/ inventories
-
RESEEDED_FROM_SOURCES
2026-08-30 · seed_from_sources
Re-seeded from updated data/raw/ inventories
-
RESEEDED_FROM_SOURCES
2026-08-31 · seed_from_sources
Re-seeded from updated data/raw/ inventories
Provenance
Seeded by scripts/seed_from_sources.py from the committed
inventories in data/raw/.
View the record.