Contacts of the helix formed by residues 453 - 460 (chain A) in PDB entry 1OFD
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with THR 453 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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451A GLY 4.3 3.6 + - - -
452A TYR* 1.3 75.7 + - - +
454A ALA* 1.3 67.9 + - - +
455A GLU* 3.6 19.7 - - + +
456A ASP* 2.8 38.5 + - - +
457A VAL* 3.4 7.8 + - - +
768A PHE* 4.7 5.0 - - - -
771A MET* 5.6 0.5 - - - +
780A LEU* 3.9 4.7 - - - -
781A GLU 3.7 7.4 - - - +
783A PHE* 3.1 33.8 - - + +
785A PHE* 4.3 22.8 - - + -
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Residues in contact with ALA 454 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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453A THR* 1.3 69.7 - - - +
455A GLU* 1.3 57.2 + - - +
457A VAL* 3.4 3.2 + - - +
458A GLU* 2.9 48.7 + - - +
780A LEU* 3.7 25.4 - - + +
781A GLU 2.8 20.4 + - - +
782A ASN* 3.8 24.0 - - + +
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Residues in contact with GLU 455 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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453A THR* 3.2 5.7 - - + +
454A ALA* 1.3 73.6 - - - +
456A ASP* 1.3 62.3 + - - +
458A GLU* 4.6 1.8 - - - +
459A MET* 2.7 58.1 + - + +
460A VAL* 3.4 3.6 + - - +
782A ASN* 3.6 19.4 - - - +
783A PHE 3.1 18.6 + - - +
784A GLY 4.1 0.5 - - - -
785A PHE* 3.1 33.8 + - + +
786A VAL* 2.9 41.2 + - + +
787A ASN* 3.9 6.6 + - - +
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Residues in contact with ASP 456 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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451A GLY 3.7 3.3 - - - +
452A TYR* 4.5 4.0 - - + -
453A THR* 2.8 45.9 + - - +
455A GLU* 1.3 78.5 - - - +
457A VAL* 1.3 59.8 + - + +
460A VAL* 3.1 16.3 - - - +
461A VAL* 3.0 27.4 + - - +
648A TRP* 3.3 41.3 + - + +
785A PHE* 5.7 1.1 - - - -
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Residues in contact with VAL 457 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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447A GLN* 4.6 12.8 - - - +
452A TYR* 4.4 15.0 - - + -
453A THR 3.4 4.9 + - - +
454A ALA* 4.3 2.2 - - - +
455A GLU 3.3 0.2 - - - -
456A ASP* 1.3 76.1 - - - +
458A GLU* 1.3 71.1 + - + +
461A VAL* 3.5 14.0 + - + -
462A VAL* 2.9 46.1 + - + +
672A SER* 5.5 4.3 - - - +
676A TRP* 6.0 2.7 - - + -
780A LEU* 3.5 32.8 - - + -
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Residues in contact with GLU 458 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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454A ALA* 2.9 34.3 + - - +
455A GLU* 5.1 0.3 - - - -
457A VAL* 1.3 87.1 - - + +
459A MET* 1.3 64.8 + - + +
462A VAL* 4.1 11.4 - - + +
463A PRO* 3.5 16.1 - - - +
690A ARG* 5.2 2.5 + - - +
782A ASN* 4.6 8.1 + - - -
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Residues in contact with MET 459 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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455A GLU* 2.7 38.1 + - + +
458A GLU* 1.3 79.0 - - + +
460A VAL* 1.3 63.8 + - + +
463A PRO* 3.3 12.8 - - - +
471A PRO* 3.3 23.4 - - - +
473A PHE* 6.5 0.4 - - + -
782A ASN* 6.1 1.3 - - - +
786A VAL* 3.7 42.0 - - + -
787A ASN* 5.0 12.8 - - + +
1070A LEU* 4.7 4.2 - - + +
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Residues in contact with VAL 460 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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455A GLU 3.4 6.0 + - - +
456A ASP* 3.1 21.6 + - - +
458A GLU 3.5 1.0 - - - -
459A MET* 1.3 84.1 - - + +
461A VAL* 1.3 64.7 + - - +
462A VAL 3.5 0.4 - - - -
463A PRO* 3.3 4.0 - - - +
464A MET* 2.7 59.8 + - + +
471A PRO* 4.4 10.4 - - + +
648A TRP* 4.3 15.0 - - + +
649A SER* 4.4 12.3 - - - -
786A VAL* 6.2 0.4 - - + -
1070A LEU* 4.2 20.2 - - + -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il