Table 2. Mass spectrometry analysis of phage ArV2 proteins.

Gene	Putative Function	MW (KDa)	Peptide count	Sequence coverage (%)
ORF15*	tape measure protein	127.953	74	35.2
ORF24*	tail fiber protein	52.293	11	38.0
ORF03*	phage portal protein	50.447	60	79.3
ORF17*	tail protein	40.386	42	70.1
ORF16*	tail protein	35.644	26	58.3
ORF18*	tail protein	33.604	39	84.9
ORF04f	capsid maturation protease	31.057	19	63.3
ORF06*	major capsid protein	30.937	21	78.9
ORF11*	major tail protein	23.801	72	95.9
ORF23u	hypothetical protein	20.621	16	95.4
ORF07	hypothetical protein	14.566	13	91.2
ORF10	hypothetical protein	14.563	9	70.4
ORF08	hypothetical protein	12.709	7	78.8
ORF09* f, u	hypothetical protein	10.230	10	76.2

* – putative structural ArV2 proteins identified by bioinformatics approaches;

f – proteins detected using the FASP method only;

u – ArV2-specific proteins that have no reliable identity to database entries.

Proteins were identified as a result of whole-phage shotgun analysis (WSA) using LC MS/MS analysis and Mascot search against an in-house database.