d1b6ra1d1k8kd1

Motif (click icon to enlarge)	SCOPid	Range	SCOP Class	SCOP Fold	SCOP Superfamily	SCOP Family	Protein
1b6r_Ai	d1b6ra1	A178-A196,A278-A287,A313-A339,A340-A355	All beta proteins	Barrel-sandwich hybrid	Rudiment single hybrid motif	BC C-terminal domain-like	N5-carboxyaminoimidazole ribonucleotide synthetase PurK (AIRC), C-domain
1k8k_Dc	d1k8kd1	D26-D51,D52-D89,D90-D120,D1-D25	Alpha and beta proteins (a+b)	Secretion chaperone-like	Arp2/3 complex subunits	Arp2/3 complex subunits	ARPC2 (34 kDa subunit)

Justification for analogy
The motif in 1b6r: motif occurs at the interface of the ATP-grasp fold and Barrel-sandwich hybrid fold. interface motif;

In the alignments below, two upper-case letters are aligned, while two lower-case letters are NOT aligned. The two sequences in an alignment are NOT continuous in most cases (see their ranges). The superpositions are re-constructed from the corresponding alignments by minimizing the overall RMSD. In a PDB-format superposition file, the first domain is represented by chain S and the second domain is represented by chain A.

MANUAL alignment     PDB format superposition    aligned motifs in PyMol   whole structures in PyMol

1b6r_Ai   --PLTHNLHQD-----GILrTSVAFp-nPSVMINLIG----------------------------RKVGHLNLTDsd-tsRLTATLEALIPLL-------ppeYASGVIWAQSKFG-----
1k8k_Dc   nkPEAVEVTFAdfdgvLYH-ISNPNgdkTKVMVSISLkfykelqahgadellkrvygsylvnpesGYNVSLLYDLenlpaSKDSIVHQAGMLKrncmillevnNRIIEETLALKFEnaaag

DALI alignment     PDB format superposition    aligned motifs in PyMol   whole structures in PyMol

1b6r_Ai   --pLTHNLHQD----gILRTSV-afpnPSVMINLIG----------------------------RKVGHLNLTDSDTS-RLTATLEALIpLLPP--------eYASGVIWAQSKFG-----
1k8k_Dc   nkpEAVEVTFAdfdgvLYHISNpngdkTKVMVSISLkfykelqahgadellkrvygsylvnpesGYNVSLLYDLENLPaSKDSIVHQAG-MLKRncmillevnNRIIEETLALKFEnaaag

TM alignment     PDB format superposition    aligned motifs in PyMol   whole structures in PyMol

1b6r_Ai   ---PLTHNLHQ----DGILRTSVA----FPNPSVMINLIGR--------------------------KVGHLNLTD---SD--TSRLTATLEALIPLL-----PPEYASGVIWAQSK-FG--------
1k8k_Dc   NKPEAVEVTFADFDG--VLYHISNPNGD-KTKVMVSISLKFYKELQAHGADELLKRVYGSYLVNPESGYNVSLLYDLENLPASKDSIVHQAGMLKRNCMILLE----VN-NRIIEETLALKFENAAAG

FAST alignment     PDB format superposition    aligned motifs in PyMol   whole structures in PyMol

1b6r_Ai   PLT-----HNLHQDGILR---------TSVAFPNP-----SVMINLIGR------------------------------KVGHLNLTDSDT-SRLTATLEALIPLL------------PPEYASGVIWAQSKFG--
1k8k_Dc   ---NKPEAVEVTF-----ADFDGVLYHISNP----NGDKTKVMVSIS--LKFYKELQAHGADELLKRVYGSYLVNPESGYNVSLLYDLENLPASKDSIVHQAGM--LKRNCMILLEVNNRIIEETLALKFENAAAG