4f2e - Revision history

OCA at 11:08, 1 March 2024

2024-03-01T11:08:48Z

← Older revision		Revision as of 11:08, 1 March 2024
Line 4:		Line 4:
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[4f2e]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptococcus_pneumoniae_D39 Streptococcus pneumoniae D39]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4F2E OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4F2E FirstGlance]. <br>		<table><tr><td colspan='2'>[[4f2e]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptococcus_pneumoniae_D39 Streptococcus pneumoniae D39]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4F2E OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4F2E FirstGlance]. <br>
	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=CU1:COPPER+(I)+ION'>CU1</scene></td></tr>		</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models\|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution\|Resolution]] 1.449Å</td></tr>
			<tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=CU1:COPPER+(I)+ION'>CU1</scene></td></tr>
	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4f2e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4f2e OCA], [https://pdbe.org/4f2e PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4f2e RCSB], [https://www.ebi.ac.uk/pdbsum/4f2e PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4f2e ProSAT]</span></td></tr>		<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4f2e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4f2e OCA], [https://pdbe.org/4f2e PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4f2e RCSB], [https://www.ebi.ac.uk/pdbsum/4f2e PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4f2e ProSAT]</span></td></tr>
	</table>		</table>
	== Function ==		== Function ==
	[https://www.uniprot.org/uniprot/A0A0H2ZPL4_STRP2 A0A0H2ZPL4_STRP2]		[https://www.uniprot.org/uniprot/A0A0H2ZPL4_STRP2 A0A0H2ZPL4_STRP2]
	~~<div style="background-color:#fffaf0;">~~
	~~== Publication Abstract from PubMed ==~~
	Copper resistance has emerged as an important virulence determinant of microbial pathogens. In Streptococcus pneumoniae, copper resistance is mediated by the copper-responsive repressor CopY, CupA and the copper-effluxing P(1B)-type ATPase CopA. We show here that CupA is a previously uncharacterized cell membrane-anchored Cu(I) chaperone and that a Cu(I) binding-competent, membrane-localized CupA is obligatory for copper resistance. The crystal structures of the soluble domain of CupA and the N-terminal metal-binding domain (MBD) of CopA (CopA(MBD)) reveal isostructural cupredoxin-like folds that each harbor a binuclear Cu(I) cluster unprecedented in bacterial copper trafficking. NMR studies reveal unidirectional Cu(I) transfer from the low-affinity site on the soluble domain of CupA to the high-affinity site of CopA(MBD). However, copper binding by CopA(MBD) is not essential for cellular copper resistance, consistent with a primary role of CupA in cytoplasmic Cu(I) sequestration and/or direct delivery to the transmembrane site of CopA for cellular efflux.

	A new structural paradigm in copper resistance in Streptococcus pneumoniae.,Fu Y, Tsui HC, Bruce KE, Sham LT, Higgins KA, Lisher JP, Kazmierczak KM, Maroney MJ, Dann CE 3rd, Winkler ME, Giedroc DP Nat Chem Biol. 2013 Jan 27. doi: 10.1038/nchembio.1168. PMID:23354287<ref>PMID:23354287</ref>

	~~From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>~~
	~~</div>~~
	~~<div class="pdbe-citations 4f2e" style="background-color:#fffaf0;"></div>~~
	~~== References ==~~
	~~<references/>~~
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>

OCA at 04:29, 7 October 2022

2022-10-07T04:29:46Z

← Older revision		Revision as of 04:29, 7 October 2022
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	==Crystal structure of the Streptococcus pneumoniae D39 copper chaperone CupA with Cu(I)==		==Crystal structure of the Streptococcus pneumoniae D39 copper chaperone CupA with Cu(I)==
	<StructureSection load='4f2e' size='340' side='right' caption='[[4f2e]], [[Resolution\|resolution]] 1.45Å' scene=''>		<StructureSection load='4f2e' size='340' side='right'caption='[[4f2e]], [[Resolution\|resolution]] 1.45Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[4f2e]] is a 1 chain structure with sequence from [~~http~~://en.wikipedia.org/wiki/~~Strp2 Strp2~~]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4F2E OCA]. For a <b>guided tour on the structure components</b> use [~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=4F2E FirstGlance]. <br>		<table><tr><td colspan='2'>[[4f2e]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptococcus_pneumoniae_D39 Streptococcus pneumoniae D39]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4F2E OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4F2E FirstGlance]. <br>
	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=CU1:COPPER+(I)+ION'>CU1</scene>~~</td></tr>~~		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=CU1:COPPER+(I)+ION'>CU1</scene></td></tr>
	~~<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[4f2f\|4f2f]]</td></tr>~~		<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4f2e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4f2e OCA], [https://pdbe.org/4f2e PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4f2e RCSB], [https://www.ebi.ac.uk/pdbsum/4f2e PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4f2e ProSAT]</span></td></tr>
	~~<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">SPD0634, SPD_0634 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=373153 STRP2])~~</td></tr>
	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=4f2e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4f2e OCA], [~~http~~://pdbe.org/4f2e PDBe], [~~http~~://www.rcsb.org/pdb/explore.do?structureId=4f2e RCSB], [~~http~~://www.ebi.ac.uk/pdbsum/4f2e PDBsum], [~~http~~://prosat.h-its.org/prosat/prosatexe?pdbcode=4f2e ProSAT]</span></td></tr>
	</table>		</table>
			== Function ==
			[https://www.uniprot.org/uniprot/A0A0H2ZPL4_STRP2 A0A0H2ZPL4_STRP2]
	<div style="background-color:#fffaf0;">		<div style="background-color:#fffaf0;">
	== Publication Abstract from PubMed ==		== Publication Abstract from PubMed ==
Line 22:		Line 22:
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
	[[Category: ~~Strp2~~]]		[[Category: Large Structures]]
	[[Category: ~~Fu, Y]]~~		[[Category: Streptococcus pneumoniae D39]]
	~~[[Category: Giedroc, D P~~]]		[[Category: Dann III CE]]
	[[Category: III~~, C E.Dann~~]]		[[Category: Fu Y]]
	[[Category: ~~Cupredoxin fold~~]]		[[Category: Giedroc DP]]
	[[Category: ~~Metal transport~~]]

OCA at 20:02, 15 December 2016

2016-12-15T20:02:14Z

← Older revision		Revision as of 20:02, 15 December 2016
Line 1:		Line 1:

	==Crystal structure of the Streptococcus pneumoniae D39 copper chaperone CupA with Cu(I)==		==Crystal structure of the Streptococcus pneumoniae D39 copper chaperone CupA with Cu(I)==
	<StructureSection load='4f2e' size='340' side='right' caption='[[4f2e]], [[Resolution\|resolution]] 1.45Å' scene=''>		<StructureSection load='4f2e' size='340' side='right' caption='[[4f2e]], [[Resolution\|resolution]] 1.45Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
	<table><tr><td colspan='2'>[[4f2e]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/~~Streptococcus_pneumoniae_d39 Streptococcus pneumoniae d39~~]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4F2E OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4F2E FirstGlance]. <br>		<table><tr><td colspan='2'>[[4f2e]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Strp2 Strp2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4F2E OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4F2E FirstGlance]. <br>
	</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=CU1:COPPER+(I)+ION'>CU1</scene></td></tr>		</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=CU1:COPPER+(I)+ION'>CU1</scene></td></tr>
	<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[4f2f\|4f2f]]</td></tr>		<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[4f2f\|4f2f]]</td></tr>
	<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">SPD0634, SPD_0634 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=373153 ~~Streptococcus pneumoniae D39~~])</td></tr>		<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">SPD0634, SPD_0634 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=373153 STRP2])</td></tr>
	<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4f2e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4f2e OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4f2e RCSB], [http://www.ebi.ac.uk/pdbsum/4f2e PDBsum]</span></td></tr>		<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4f2e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4f2e OCA], [http://pdbe.org/4f2e PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4f2e RCSB], [http://www.ebi.ac.uk/pdbsum/4f2e PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4f2e ProSAT]</span></td></tr>
	</table>		</table>
	<div style="background-color:#fffaf0;">		<div style="background-color:#fffaf0;">
Line 16:		Line 17:
	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>		From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
	</div>		</div>
			<div class="pdbe-citations 4f2e" style="background-color:#fffaf0;"></div>
	== References ==		== References ==
	<references/>		<references/>
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
	[[Category: ~~Streptococcus pneumoniae d39~~]]		[[Category: Strp2]]
	[[Category: Fu, Y]]		[[Category: Fu, Y]]
	[[Category: Giedroc, D P]]		[[Category: Giedroc, D P]]

OCA at 15:07, 9 December 2014

2014-12-09T15:07:01Z

← Older revision		Revision as of 15:07, 9 December 2014
Line 1:		Line 1:
	[[~~Image~~:~~4f2e~~.~~png~~\|~~left~~\|~~200px~~]]		==Crystal structure of the Streptococcus pneumoniae D39 copper chaperone CupA with Cu(I)==
			<StructureSection load='4f2e' size='340' side='right' caption='[[4f2e]], [[Resolution\|resolution]] 1.45Å' scene=''>
			== Structural highlights ==
			<table><tr><td colspan='2'>[[4f2e]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Streptococcus_pneumoniae_d39 Streptococcus pneumoniae d39]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4F2E OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4F2E FirstGlance]. <br>
			</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand\|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=CU1:COPPER+(I)+ION'>CU1</scene></td></tr>
			<tr id='related'><td class="sblockLbl"><b>[[Related_structure\|Related:]]</b></td><td class="sblockDat">[[4f2f\|4f2f]]</td></tr>
			<tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">SPD0634, SPD_0634 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=373153 Streptococcus pneumoniae D39])</td></tr>
			<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4f2e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4f2e OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4f2e RCSB], [http://www.ebi.ac.uk/pdbsum/4f2e PDBsum]</span></td></tr>
			</table>
			<div style="background-color:#fffaf0;">
			== Publication Abstract from PubMed ==
			Copper resistance has emerged as an important virulence determinant of microbial pathogens. In Streptococcus pneumoniae, copper resistance is mediated by the copper-responsive repressor CopY, CupA and the copper-effluxing P(1B)-type ATPase CopA. We show here that CupA is a previously uncharacterized cell membrane-anchored Cu(I) chaperone and that a Cu(I) binding-competent, membrane-localized CupA is obligatory for copper resistance. The crystal structures of the soluble domain of CupA and the N-terminal metal-binding domain (MBD) of CopA (CopA(MBD)) reveal isostructural cupredoxin-like folds that each harbor a binuclear Cu(I) cluster unprecedented in bacterial copper trafficking. NMR studies reveal unidirectional Cu(I) transfer from the low-affinity site on the soluble domain of CupA to the high-affinity site of CopA(MBD). However, copper binding by CopA(MBD) is not essential for cellular copper resistance, consistent with a primary role of CupA in cytoplasmic Cu(I) sequestration and/or direct delivery to the transmembrane site of CopA for cellular efflux.

	~~{{STRUCTURE_4f2e\| PDB=4f2e \| SCENE= }}~~		A new structural paradigm in copper resistance in Streptococcus pneumoniae.,Fu Y, Tsui HC, Bruce KE, Sham LT, Higgins KA, Lisher JP, Kazmierczak KM, Maroney MJ, Dann CE 3rd, Winkler ME, Giedroc DP Nat Chem Biol. 2013 Jan 27. doi: 10.1038/nchembio.1168. PMID:23354287<ref>PMID:23354287</ref>

	~~===Crystal structure~~ of the ~~Streptococcus pneumoniae D39 copper chaperone CupA with Cu(I)===~~		From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
			</div>
	~~{{ABSTRACT_PUBMED_23354287}}~~		== References ==
			<references/>
	==~~About this Structure~~==		__TOC__
	~~[[4f2e]] is a 1 chain structure with sequence from [http:~~//~~en.wikipedia.org/wiki/Streptococcus_pneumoniae_d39 Streptococcus pneumoniae d39]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4F2E OCA].~~		</StructureSection>
	[[Category: Streptococcus pneumoniae d39]]		[[Category: Streptococcus pneumoniae d39]]
	[[Category: Fu, Y.]]		[[Category: Fu, Y]]
	[[Category: Giedroc, D P.]]		[[Category: Giedroc, D P]]
	[[Category: III, C E.Dann.]]		[[Category: III, C E.Dann]]
	[[Category: Cupredoxin fold]]		[[Category: Cupredoxin fold]]
	[[Category: Metal transport]]		[[Category: Metal transport]]

OCA at 09:37, 13 February 2013

2013-02-13T09:37:51Z

← Older revision		Revision as of 09:37, 13 February 2013
Line 1:		Line 1:
	[[Image:4f2e.~~jpg~~\|left\|200px]]		[[Image:4f2e.png\|left\|200px]]

	{{STRUCTURE_4f2e\| PDB=4f2e \| SCENE= }}		{{STRUCTURE_4f2e\| PDB=4f2e \| SCENE= }}
Line 5:		Line 5:
	===Crystal structure of the Streptococcus pneumoniae D39 copper chaperone CupA with Cu(I)===		===Crystal structure of the Streptococcus pneumoniae D39 copper chaperone CupA with Cu(I)===

			{{ABSTRACT_PUBMED_23354287}}

	==About this Structure==		==About this Structure==

OCA at 12:39, 30 January 2013

2013-01-30T12:39:23Z

← Older revision		Revision as of 12:39, 30 January 2013
Line 1:		Line 1:
	~~'''Unreleased structure'''~~		[[Image:4f2e.jpg\|left\|200px]]

	~~The entry~~ 4f2e ~~is ON HOLD~~ ~~until Paper Publication~~		{{STRUCTURE_4f2e\| PDB=4f2e \| SCENE= }}

	~~Authors: Fu, Y., Dann III, C.E., Giedroc, D.P.~~		===Crystal structure of the Streptococcus pneumoniae D39 copper chaperone CupA with Cu(I)===

	~~Description~~: ~~Crystal structure of the~~ Streptococcus pneumoniae ~~D39 copper chaperone CupA with Cu(I)~~
			==About this Structure==
			[[4f2e]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Streptococcus_pneumoniae_d39 Streptococcus pneumoniae d39]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4F2E OCA].
			[[Category: Streptococcus pneumoniae d39]]
			[[Category: Fu, Y.]]
			[[Category: Giedroc, D P.]]
			[[Category: III, C E.Dann.]]
			[[Category: Cupredoxin fold]]
			[[Category: Metal transport]]

OCA at 05:46, 13 June 2012

2012-06-13T05:46:13Z

← Older revision		Revision as of 05:46, 13 June 2012
Line 1:		Line 1:
	'''Unreleased structure'''		'''Unreleased structure'''

	The entry 4f2e is ON HOLD		The entry 4f2e is ON HOLD until Paper Publication

	Authors: Fu, Y., Dann III, C.E., Giedroc, D.P.		Authors: Fu, Y., Dann III, C.E., Giedroc, D.P.

	Description: Crystal structure of the Streptococcus pneumoniae D39 copper chaperone CupA with Cu(I)		Description: Crystal structure of the Streptococcus pneumoniae D39 copper chaperone CupA with Cu(I)

OCA: Protected "4f2e" [edit=sysop:move=sysop]

2012-05-16T08:54:18Z

Protected "4f2e" [edit=sysop:move=sysop]

← Older revision	Revision as of 08:54, 16 May 2012
(No difference)

OCA: New page: '''Unreleased structure''' The entry 4f2e is ON HOLD Authors: Fu, Y., Dann III, C.E., Giedroc, D.P. Description: Crystal structure of the Streptococcus pneumoniae D39 copper chaperone ...

2012-05-16T08:54:18Z

New page: '''Unreleased structure''' The entry 4f2e is ON HOLD Authors: Fu, Y., Dann III, C.E., Giedroc, D.P. Description: Crystal structure of the Streptococcus pneumoniae D39 copper chaperone ...

New page

'''Unreleased structure'''

The entry 4f2e is ON HOLD

Authors: Fu, Y., Dann III, C.E., Giedroc, D.P.

Description: Crystal structure of the Streptococcus pneumoniae D39 copper chaperone CupA with Cu(I)