A cyanobacterium with an anoxygenic Type II reaction center from purple bacteria? (Contamination)

With the surge of genome sequences it is crazy what you can find. As I was doing a few BLASTs searching for new photosynthetic reaction center proteins in the database I noticed that the genome of Lyngbya confervoides BDU141951, which was reported early this year (link), contained genes that encode an anoxygenic Type II reaction center from Alphaproteobacteria (Purple Bacteria).

The three genes for the L, M and H subunit.

Name	Accession	Start	Stop	Strand	GeneID	Locus	Locus tag	Protein product	Length	Protein name
Un	NZ_JTHE01000129.1	1447	2301	+	-	-	QQ91_RS05655	WP_039723522.1	284	photosynthetic reaction center subunit L
Un	NZ_JTHE01000129.1	2315	3298	+	-	-	QQ91_RS05660	WP_039723523.1	327	photosynthetic reaction center subunit M
Un	NZ_JTHE01000254.1	3008	3799	-	-	-	QQ91_RS10590	WP_039724487.1	263	photosynthetic reaction center subunit H

1. The best hit for the L subunit was to:

Photosynthetic reaction center subunit L [Oceanibaculum indicum]
Sequence ID: ref|WP_008944428.1|

Score	Expect	Method	Identities	Positives	Gaps
442 bits(1137)	2e-153	Compositional matrix adjust.	222/280(79%)	240/280(85%)	1/280(0%)

2. The best hit for the M subunit was to:

Photosynthetic reaction center subunit M [Ahrensia sp. R2A130]
Sequence ID: ref|WP_009758337.1|

Score	Expect	Method	Identities	Positives	Gaps
457 bits(1175)	5e-158	Compositional matrix adjust.	221/308(72%)	260/308(84%)	2/308(0%)

3. The best hit for the H subunit was to:

Photosynthetic reaction centre, H-chain [Hoeflea phototrophica]
Sequence ID: ref|WP_007196606.1|

Score	Expect	Method	Identities	Positives	Gaps
282 bits(721)	5e-91	Compositional matrix adjust.	139/258(54%)	175/258(67%)	2/258(0%)

What is going on?

When I BLASTed the BchZ subunit of chlorophyllide a reductase from Rhodobacter sphaeroides, which makes bacteriochlorophyllide a from chlorophyllide a... the best hit was to this same strain of cyanobacteria: but it seems it is a fragment only (see image below, never mind the annotation). A close homologous to BchY did not retrieve anything out of the ordinary, the same for BchX. So this cyanobacterium cannot really make bacteriochlorophyll... I wonder if the anoxygenic Type II reaction center in this strain could be active using chlorophyll a along side PSII and PSI.

The fact that the best hits to the reaction center proteins are below 80% means that the alphaproteobacterium that donated this genes represents at least a new genus or something.

UPDATE: It turned out after all to be contamination. It might be that the cultures used were not completely axenic. It's a pity.