AntibioticMech

bleomycin B2

antibioticmech:aro-e05426a76f ·ANTIBACTERIAL ·MINTED SEEDED

Bleomycin B2 is a glycopeptide antibiotic produced by Streptomyces verticillus taken as a mixture of bleomycins. It induces stand breaks in bacterial nucleic acids. — PMID:15700963

Classification

glycopeptide antibioticARO:3000081

Strictly broader compounds or drug classes this molecule belongs to.

• ARO:3000081 ARO:3000081

Chemical structure

Computed structure properties

Molecular formula	C55H84N20O21S2
Charge	0
Average mass	1425.5 Da
Monoisotopic mass	1424.55613212 Da
Source	PubChem · retrieved 2026-08-29
InChIKey	NBLHOLNNKJBEDC-XOGQCRKLSA-N

SMILES

CC1=C(N=C(N=C1N)[C@H](CC(=O)N)NC[C@@H](C(=O)N)N)C(=O)N[C@@H]([C@H](C2=CN=CN2)O[C@H]3[C@H]([C@H]([C@@H]([C@@H](O3)CO)O)O)O[C@@H]4[C@H]([C@H]([C@@H]([C@H](O4)CO)O)OC(=O)N)O)C(=O)N[C@H](C)[C@H]([C@H](C)C(=O)N[C@@H]([C@@H](C)O)C(=O)NCCC5=NC(=CS5)C6=NC(=CS6)C(=O)NCCCCN=C(N)N)O

InChI

InChI=1S/C55H84N20O21S2/c1-19-32(72-45(75-43(19)58)24(11-30(57)79)67-12-23(56)44(59)85)49(89)74-34(40(25-13-63-18-68-25)94-53-42(38(83)36(81)28(14-76)93-53)95-52-39(84)41(96-55(62)91)37(82)29(15-77)92-52)50(90)69-21(3)35(80)20(2)46(86)73-33(22(4)78)48(88)65-10-7-31-70-27(17-97-31)51-71-26(16-98-51)47(87)64-8-5-6-9-66-54(60)61/h13,16-18,20-24,28-29,33-42,52-53,67,76-78,80-84H,5-12,14-15,56H2,1-4H3,(H2,57,79)(H2,59,85)(H2,62,91)(H,63,68)(H,64,87)(H,65,88)(H,69,90)(H,73,86)(H,74,89)(H2,58,72,75)(H4,60,61,66)/t20-,21+,22+,23-,24-,28-,29+,33-,34-,35-,36+,37+,38-,39-,40-,41-,42-,52+,53-/m0/s1

Cross-references

Equivalent identifiers for this same structure in other resources.

• ARO:3000692
• pubchem.compound:5496540

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:3000692	bleomycin B2	antibioticmech:aro-e05426a76f	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.

deoxyribonucleic acid NUCLEIC_ACID ATTACKED_COMPONENT

ARO:3000738

CARD/ARO database assertion; target organism, strain, and assay are not specified. ARO describes DNA strand damage or transcription interference. Evidence status: DATABASE_ASSERTION_ONLY. Source: CARD_ARO 2026-08-30 (retrieved 2026-08-30).

• ARO:3000738 (CARD/ARO asserts targeted_by_antibiotic ARO:3000692 (bleomycin B2); database assertion, not a primary citation.)

ribonucleic acid NUCLEIC_ACID ATTACKED_COMPONENT

ARO:3000740

CARD/ARO database assertion; target organism, strain, and assay are not specified. ARO describes RNA strand damage across multiple RNA types. Evidence status: DATABASE_ASSERTION_ONLY. Source: CARD_ARO 2026-08-30 (retrieved 2026-08-30).

• ARO:3000740 (CARD/ARO asserts targeted_by_antibiotic ARO:3000692 (bleomycin B2); database assertion, not a primary citation.)

Resistance mechanisms

1 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_INACTIVATION 1

ANTIBIOTIC_INACTIVATION

Determinant	ARO ID	Organism	Gene families	Evidence
BRP(MBL)	ARO:3001205	not organism-specific	—	ARO:3001205 (CARD/ARO asserts confers_resistance_to_antibiotic ARO:3000692 (bleomycin B2); database assertion, not a primary citation.)

Curation history

1. SEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources

   Seeded from data/raw/ inventories (ARO)

2. RESEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources

   Re-seeded from updated data/raw/ inventories

3. RESEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources

   Re-seeded from updated data/raw/ inventories

4. 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.