3tca - Revision history

OCA at 13:23, 14 March 2024

2024-03-14T13:23:54Z

←Older revision		Revision as of 13:23, 14 March 2024
Line 3:		Line 3:
	<StructureSection load='3tca' size='340' side='right'caption='[[3tca]], [[Resolution\|resolution]] 2.35Å' scene=''>		<StructureSection load='3tca' size='340' side='right'caption='[[3tca]], [[Resolution\|resolution]] 2.35Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[3tca]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/~~Lk3_transgenic_mice Lk3 transgenic mice~~]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TCA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3TCA FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[3tca]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TCA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3TCA FirstGlance]. <br>
-	</td></tr><tr id='~~gene~~'><td class="sblockLbl"><b>[[~~Gene~~\|~~Gene~~:]]</b></td><td class="sblockDat">~~Apbb1ip~~, ~~Prel1 (~~[~~https://www~~.~~ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info~~&~~srchmode=5&id=10090 LK3 transgenic mice])~~</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]] 2.35Å</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=3tca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3tca OCA], [https://pdbe.org/3tca PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3tca RCSB], [https://www.ebi.ac.uk/pdbsum/3tca PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3tca 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=3tca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3tca OCA], [https://pdbe.org/3tca PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3tca RCSB], [https://www.ebi.ac.uk/pdbsum/3tca PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3tca ProSAT]</span></td></tr>
	</table>		</table>
	== Function ==		== Function ==
-	[[https://www.uniprot.org/uniprot/AB1IP_MOUSE AB1IP_MOUSE]] Appears to function in the signal transduction from Ras activation to actin cytoskeletal remodeling. Suppresses insulin-induced promoter activities through AP1 and SRE. Mediates Rap1-induced adhesion (By similarity).	+	[https://www.uniprot.org/uniprot/AB1IP_MOUSE AB1IP_MOUSE] Appears to function in the signal transduction from Ras activation to actin cytoskeletal remodeling. Suppresses insulin-induced promoter activities through AP1 and SRE. Mediates Rap1-induced adhesion (By similarity).
-	~~<div style="background-color:#fffaf0;">~~	+
-	~~== Publication Abstract from PubMed ==~~	+
-	Adaptive immunity depends on lymphocyte adhesion that is mediated by the integrin lymphocyte functional antigen 1 (LFA-1). The small guanosine triphosphatase Rap1 regulates LFA-1 adhesiveness through one of its effectors, Rap1-interacting adapter molecule (RIAM). We show that RIAM was recruited to the lymphocyte plasma membrane (PM) through its Ras association (RA) and pleckstrin homology (PH) domains, both of which were required for lymphocyte adhesion. The N terminus of RIAM inhibited membrane translocation. In vitro, the RA domain bound both Rap1 and H-Ras with equal but relatively low affinity, whereas in vivo only Rap1 was required for PM association. The PH domain bound phosphoinositol 4,5-bisphosphate (PI(4,5)P(2)) and was responsible for the spatial distribution of RIAM only at the PM of activated T cells. We determined the crystal structure of the RA and PH domains and found that, despite an intervening linker of 50 aa, the two domains were integrated into a single structural unit, which was critical for proper localization to the PM. Thus, the RA-PH domains of RIAM function as a proximity detector for activated Rap1 and PI(4,5)P(2).	+
-		+
-	Rap1-interacting adapter molecule (RIAM) associates with the plasma membrane via a proximity detector.,Wynne JP, Wu J, Su W, Mor A, Patsoukis N, Boussiotis VA, Hubbard SR, Philips MR J Cell Biol. 2012 Oct 15;199(2):317-29. doi: 10.1083/jcb.201201157. Epub 2012 Oct, 8. PMID:23045549<ref>PMID:23045549</ref>	+
-		+
-	~~From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>~~	+
-	~~</div>~~	+
-	~~<div class="pdbe-citations 3tca" style="background-color:#fffaf0;"></div>~~	+
-	~~== References ==~~	+
-	~~<references/>~~	+
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
	[[Category: Large Structures]]		[[Category: Large Structures]]
-	[[Category: ~~Lk3 transgenic mice~~]]	+	[[Category: Mus musculus]]
-	[[Category: Hubbard~~, S R~~]]	+	[[Category: Hubbard SR]]
-	[[Category: Wu, J]]	+	[[Category: Wu J]]
-	~~[[Category: Integrin signaling]]~~	+
-	~~[[Category: Ph domain]]~~	+
-	~~[[Category: Ra domain]]~~	+
-	~~[[Category: Rap1-interacting adaptor molecule]]~~	+
-	~~[[Category: Rbd]]~~	+
-	~~[[Category: Signaling protein~~]]	+

OCA at 16:51, 6 July 2022

2022-07-06T16:51:52Z

←Older revision		Revision as of 16:51, 6 July 2022
Line 1:		Line 1:

	==Crystal structure of the Ras-associating and pleckstrin-homology domains of RIAM==		==Crystal structure of the Ras-associating and pleckstrin-homology domains of RIAM==
-	<StructureSection load='3tca' size='340' side='right' caption='[[3tca]], [[Resolution\|resolution]] 2.35Å' scene=''>	+	<StructureSection load='3tca' size='340' side='right'caption='[[3tca]], [[Resolution\|resolution]] 2.35Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[3tca]] is a 2 chain structure with sequence from [~~http~~://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TCA OCA]. For a <b>guided tour on the structure components</b> use [~~http~~://~~oca~~.~~weizmann.ac.il/oca-docs~~/fgij/fg.htm?mol=3TCA FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[3tca]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TCA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3TCA FirstGlance]. <br>
-	</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">Apbb1ip, Prel1 ([~~http~~://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice])</td></tr>	+	</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">Apbb1ip, Prel1 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice])</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=3tca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3tca OCA], [~~http~~://pdbe.org/3tca PDBe], [~~http~~://www.rcsb.org/pdb/explore.do?structureId=3tca RCSB], [~~http~~://www.ebi.ac.uk/pdbsum/3tca PDBsum], [~~http~~://prosat.h-its.org/prosat/prosatexe?pdbcode=3tca 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=3tca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3tca OCA], [https://pdbe.org/3tca PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3tca RCSB], [https://www.ebi.ac.uk/pdbsum/3tca PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3tca ProSAT]</span></td></tr>
	</table>		</table>
	== Function ==		== Function ==
-	[[~~http~~://www.uniprot.org/uniprot/AB1IP_MOUSE AB1IP_MOUSE]] Appears to function in the signal transduction from Ras activation to actin cytoskeletal remodeling. Suppresses insulin-induced promoter activities through AP1 and SRE. Mediates Rap1-induced adhesion (By similarity).	+	[[https://www.uniprot.org/uniprot/AB1IP_MOUSE AB1IP_MOUSE]] Appears to function in the signal transduction from Ras activation to actin cytoskeletal remodeling. Suppresses insulin-induced promoter activities through AP1 and SRE. Mediates Rap1-induced adhesion (By similarity).
	<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: Large Structures]]
	[[Category: Lk3 transgenic mice]]		[[Category: Lk3 transgenic mice]]
	[[Category: Hubbard, S R]]		[[Category: Hubbard, S R]]

OCA at 11:31, 10 December 2016

2016-12-10T11:31:25Z

←Older revision		Revision as of 11:31, 10 December 2016
Line 1:		Line 1:
		+
	==Crystal structure of the Ras-associating and pleckstrin-homology domains of RIAM==		==Crystal structure of the Ras-associating and pleckstrin-homology domains of RIAM==
	<StructureSection load='3tca' size='340' side='right' caption='[[3tca]], [[Resolution\|resolution]] 2.35Å' scene=''>		<StructureSection load='3tca' size='340' side='right' caption='[[3tca]], [[Resolution\|resolution]] 2.35Å' scene=''>
	== Structural highlights ==		== Structural highlights ==
-	<table><tr><td colspan='2'>[[3tca]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/~~Mus_musculus Mus musculus~~]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TCA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3TCA FirstGlance]. <br>	+	<table><tr><td colspan='2'>[[3tca]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TCA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3TCA FirstGlance]. <br>
-	</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">Apbb1ip, Prel1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 ~~Mus musculus~~])</td></tr>	+	</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">Apbb1ip, Prel1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice])</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=3tca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3tca OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3tca RCSB], [http://www.ebi.ac.uk/pdbsum/3tca 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=3tca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3tca OCA], [http://pdbe.org/3tca PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3tca RCSB], [http://www.ebi.ac.uk/pdbsum/3tca PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3tca ProSAT]</span></td></tr>
	</table>		</table>
		+	== Function ==
		+	[[http://www.uniprot.org/uniprot/AB1IP_MOUSE AB1IP_MOUSE]] Appears to function in the signal transduction from Ras activation to actin cytoskeletal remodeling. Suppresses insulin-induced promoter activities through AP1 and SRE. Mediates Rap1-induced adhesion (By similarity).
	<div style="background-color:#fffaf0;">		<div style="background-color:#fffaf0;">
	== Publication Abstract from PubMed ==		== Publication Abstract from PubMed ==
Line 14:		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 3tca" style="background-color:#fffaf0;"></div>
	== References ==		== References ==
	<references/>		<references/>
	__TOC__		__TOC__
	</StructureSection>		</StructureSection>
-	[[Category: ~~Mus musculus~~]]	+	[[Category: Lk3 transgenic mice]]
	[[Category: Hubbard, S R]]		[[Category: Hubbard, S R]]
	[[Category: Wu, J]]		[[Category: Wu, J]]

OCA at 17:51, 9 December 2014

2014-12-09T17:51:33Z

←Older revision		Revision as of 17:51, 9 December 2014
Line 1:		Line 1:
-	[[~~Image:~~3tca.~~png~~\|~~left\|200px~~]]	+	==Crystal structure of the Ras-associating and pleckstrin-homology domains of RIAM==
		+	<StructureSection load='3tca' size='340' side='right' caption='[[3tca]], [[Resolution\|resolution]] 2.35Å' scene=''>
		+	== Structural highlights ==
		+	<table><tr><td colspan='2'>[[3tca]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TCA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3TCA FirstGlance]. <br>
		+	</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene\|Gene:]]</b></td><td class="sblockDat">Apbb1ip, Prel1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 Mus musculus])</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=3tca FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3tca OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3tca RCSB], [http://www.ebi.ac.uk/pdbsum/3tca PDBsum]</span></td></tr>
		+	</table>
		+	<div style="background-color:#fffaf0;">
		+	== Publication Abstract from PubMed ==
		+	Adaptive immunity depends on lymphocyte adhesion that is mediated by the integrin lymphocyte functional antigen 1 (LFA-1). The small guanosine triphosphatase Rap1 regulates LFA-1 adhesiveness through one of its effectors, Rap1-interacting adapter molecule (RIAM). We show that RIAM was recruited to the lymphocyte plasma membrane (PM) through its Ras association (RA) and pleckstrin homology (PH) domains, both of which were required for lymphocyte adhesion. The N terminus of RIAM inhibited membrane translocation. In vitro, the RA domain bound both Rap1 and H-Ras with equal but relatively low affinity, whereas in vivo only Rap1 was required for PM association. The PH domain bound phosphoinositol 4,5-bisphosphate (PI(4,5)P(2)) and was responsible for the spatial distribution of RIAM only at the PM of activated T cells. We determined the crystal structure of the RA and PH domains and found that, despite an intervening linker of 50 aa, the two domains were integrated into a single structural unit, which was critical for proper localization to the PM. Thus, the RA-PH domains of RIAM function as a proximity detector for activated Rap1 and PI(4,5)P(2).

-	~~{{STRUCTURE_3tca\| PDB=3tca \| SCENE= }}~~	+	Rap1-interacting adapter molecule (RIAM) associates with the plasma membrane via a proximity detector.,Wynne JP, Wu J, Su W, Mor A, Patsoukis N, Boussiotis VA, Hubbard SR, Philips MR J Cell Biol. 2012 Oct 15;199(2):317-29. doi: 10.1083/jcb.201201157. Epub 2012 Oct, 8. PMID:23045549<ref>PMID:23045549</ref>

-	~~===Crystal structure~~ of the ~~Ras-associating and pleckstrin-homology domains~~ of ~~RIAM===~~	+	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
-		+	</div>
-	~~{{ABSTRACT_PUBMED_23045549}}~~	+	== References ==
-		+	<references/>
-	==~~About this Structure~~==	+	__TOC__
-	~~[[3tca]] is a 2 chain structure with sequence from [http:~~//~~en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TCA OCA].~~	+	</StructureSection>
	[[Category: Mus musculus]]		[[Category: Mus musculus]]
-	[[Category: Hubbard, S R.]]	+	[[Category: Hubbard, S R]]
-	[[Category: Wu, J.]]	+	[[Category: Wu, J]]
	[[Category: Integrin signaling]]		[[Category: Integrin signaling]]
	[[Category: Ph domain]]		[[Category: Ph domain]]

OCA at 09:08, 31 October 2012

2012-10-31T09:08:38Z

←Older revision		Revision as of 09:08, 31 October 2012
Line 1:		Line 1:
-	[[Image:3tca.~~jpg~~\|left\|200px]]	+	[[Image:3tca.png\|left\|200px]]

	{{STRUCTURE_3tca\| PDB=3tca \| SCENE= }}		{{STRUCTURE_3tca\| PDB=3tca \| SCENE= }}
Line 5:		Line 5:
	===Crystal structure of the Ras-associating and pleckstrin-homology domains of RIAM===		===Crystal structure of the Ras-associating and pleckstrin-homology domains of RIAM===

		+	{{ABSTRACT_PUBMED_23045549}}

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

OCA at 20:44, 26 September 2012

2012-09-26T20:44:03Z

←Older revision		Revision as of 20:44, 26 September 2012
Line 1:		Line 1:
-	~~'''Unreleased structure'''~~	+	[[Image:3tca.jpg\|left\|200px]]

-	~~The entry~~ 3tca ~~is ON HOLD~~ ~~until Paper Publication~~	+	{{STRUCTURE_3tca\| PDB=3tca \| SCENE= }}

-	~~Authors: Wu, J., Hubbard, S.R.~~	+	===Crystal structure of the Ras-associating and pleckstrin-homology domains of RIAM===

-	~~Description: Crystal~~ structure ~~of the Ras~~-~~associating and pleckstrin~~-~~homology domains of RIAM~~	+
		+	==About this Structure==
		+	[[3tca]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3TCA OCA].
		+	[[Category: Mus musculus]]
		+	[[Category: Hubbard, S R.]]
		+	[[Category: Wu, J.]]
		+	[[Category: Integrin signaling]]
		+	[[Category: Ph domain]]
		+	[[Category: Ra domain]]
		+	[[Category: Rap1-interacting adaptor molecule]]
		+	[[Category: Rbd]]
		+	[[Category: Signaling protein]]

OCA at 05:46, 7 September 2011

2011-09-07T05:46:24Z

←Older revision		Revision as of 05:46, 7 September 2011
Line 1:		Line 1:
	'''Unreleased structure'''		'''Unreleased structure'''

-	The entry 3tca is ON HOLD	+	The entry 3tca is ON HOLD until Paper Publication

	Authors: Wu, J., Hubbard, S.R.		Authors: Wu, J., Hubbard, S.R.

	Description: Crystal structure of the Ras-associating and pleckstrin-homology domains of RIAM		Description: Crystal structure of the Ras-associating and pleckstrin-homology domains of RIAM

OCA at 07:10, 24 August 2011

2011-08-24T07:10:20Z

←Older revision		Revision as of 07:10, 24 August 2011
Line 3:		Line 3:
	The entry 3tca is ON HOLD		The entry 3tca is ON HOLD

-	Authors: Wu, J, Hubbard, S.R.	+	Authors: Wu, J., Hubbard, S.R.

	Description: Crystal structure of the Ras-associating and pleckstrin-homology domains of RIAM		Description: Crystal structure of the Ras-associating and pleckstrin-homology domains of RIAM

OCA: Protected "3tca" [edit=sysop:move=sysop]

2011-08-17T05:56:57Z

Protected "3tca" [edit=sysop:move=sysop]

←Older revision

Revision as of 05:56, 17 August 2011

OCA: New page: '''Unreleased structure''' The entry 3tca is ON HOLD Authors: Wu, J, Hubbard, S.R. Description: Crystal structure of the Ras-associating and pleckstrin-homology domains of RIAM

2011-08-17T05:56:56Z

New page: '''Unreleased structure''' The entry 3tca is ON HOLD Authors: Wu, J, Hubbard, S.R. Description: Crystal structure of the Ras-associating and pleckstrin-homology domains of RIAM

New page

'''Unreleased structure'''

The entry 3tca is ON HOLD

Authors: Wu, J, Hubbard, S.R.

Description: Crystal structure of the Ras-associating and pleckstrin-homology domains of RIAM