▎ 摘　　要

NOVELTY - A polypeptide (P1) comprising specific amino acid sequence, is new. USE - For making a structure such as for making patterned array on the inorganic solid surface. The inorganic solid surface is selected from graphite, graphene, MoS2, MoSe2, WSe2, WS2 and/or BN. The inorganic solid surface is a single layer material. The inorganic solid surface is part of a device selected from protein chips, peptide-molecular circuits, designer proteins, semiconductor structures, implantable medical devices, bio-fuel cells, and biosensors. The patterned array is selected from ordered polypeptide film, porous confluent film, peptide clusters, nanowires, quantum dots, metallic and insulator nanoparticles (nanoparticles (NPs), such as Au and silica, glass) and/or nanoscale p-n junctions (all claimed). ADVANTAGE - The polypeptides are capable of binding to an inorganic solid surface, such as graphite, graphene, MoS2, MoSe2, WSe2, WS2, or BN; and have a variety of activities related to diffusion across the surface and self-directed assembly on such inorganic atomically flat solid surfaces. The polypeptides possess a broad area of activities relating to binding to, diffusing across (i.e. surface movement of the polypeptides), and assembling on inorganic solid surfaces, as well as possessing a variety of chemical activities (such as modifying inorganic surface hydrophobicity or contact angle), doping effects (such as injecting holes or electrons into the inorganic surface/single layer atomic materials (SLAM)), enzymatic activities and additional functionalities. The polypeptides are great value in nano-opto-electronic applications with bio-materials and biomolecular systems. The polypeptides provide novel platform for functionalizing graphitic materials that offers numerous advantages, including non-invasive modification of the substrate, biocompatible processing in an aqueous environment, and simple fusion with other functional biological molecules. The polypeptides can be a versatile molecular tool to address the challenge of self-assembly and molecular doping on graphene as they are simpler (shorter in size and simpler in chemistry) than natural proteins, and yet they have a wide-range of chemistry and molecular conformations inherent in their amino acid sequences. The polypeptides modulate electrical properties of single-layer two-dimensional materials such as graphene and MOS2 that are attractive as a novel platform to integrate heterogeneous nano-scale components towards a diversity of applications in the next generation electronics. DETAILED DESCRIPTION - A polypeptide (P1) comprising amino acid sequence of Z1-Z2-R1-R2-R3-T'-R5-R6-R7-R8-R9-R10-R11-R12 (SEQ ID NO: 1) or amino acid sequence of D1-D2-D3 (SEQ ID NO: 36), is new. Z1=absent or molecular tag; Z2=absent or is any sequence of 1-88 amino acids; R1=Ile, Thr, Ala, Val or Leu; R2=Met, Gln, Ala, Val, Leu or Ile; R3=Val, Ser, Thr, Ile, Leu or Ala; R5=Glu, Lys, Asp, Asn, Thr, Ser or Ala; R6 and R7=Ser or Pro; R8=Asp, Arg, Asn or Ala; R9=Trp, Phe, Phe-phenyl, Amino-Phe, Ala or Tyr; R10=Ser, Asp or Arg; R11=Ser, Asp or Arg; R12=Trp, Phe, Ala or Tyr; D1=domain of about 3-5 amino acids, where at least two of the amino acids are hydrophobic and non-aromatic; D2=domain of about 5 amino acids, where at least three of the amino acids are hydrophilic; D3=domain of about 4 amino acids, where at least two of the amino acids in D3 have an aromatic ring. INDEPENDENT CLAIMS are included for the following: (1) a composition (C1) comprising at least two different polypeptides (P1); (2) new isolated nucleic acid (A1) encoding the polypeptide (P1); (3) new recombinant expression vector (V1) comprising the isolated nucleic acid (A1) operatively linked to a promoter; (4) new recombinant host cell comprising the recombinant expression vector (V1); (5) a structure comprising an inorganic solid surface, and a polypeptide array bound to the solid surface, where the polypeptide array comprises the polypeptide (P1) or composition (C1); (6) making a structure involving contacting an inorganic solid surface with the polypeptide (P1) or composition (C1), under conditions to promote self-assembly of the polypeptides into a patterned array on the surface; and (7) designing (M1) polypeptides that bind to inorganic solid surfaces involving a) providing the polypeptide having SEQ ID NO: 36, b) modifying amino acids in 1, 2, or all 3 domains to produce a modified polypeptide, and c) testing the modified polypeptide for altered binding to inorganic solid surfaces.