Contacts of the helix formed by residues 554 - 560 (chain A) in PDB entry 6MBZ
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 SER 554 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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500A ASP* 3.3 24.6 + - - -
501A LYS* 4.0 1.1 - - - +
552A SER* 3.5 2.6 + - - -
553A VAL* 1.3 76.5 - - - +
555A TRP* 1.3 66.3 + - - +
556A SER* 3.1 20.8 + - - -
557A GLN* 2.7 26.2 + - - +
558A PHE* 3.0 18.9 + - - +
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Residues in contact with TRP 555 (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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437A GLU* 3.5 40.8 + - + -
480A ALA* 4.1 6.1 - - + -
481A THR* 3.9 28.9 - - + -
484A TRP* 3.4 75.7 - + + -
500A ASP* 3.3 22.2 + - - +
554A SER* 1.3 73.8 + - - +
556A SER* 1.3 63.8 + - - +
558A PHE* 2.9 13.7 + + - +
559A ASN* 2.8 49.5 + - + -
560A ARG* 4.8 7.5 - - + +
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Residues in contact with SER 556 (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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500A ASP* 4.8 1.5 + - - -
554A SER* 3.1 10.7 + - - -
555A TRP* 1.3 81.5 - - - +
557A GLN* 1.3 64.3 + - - +
559A ASN 2.9 0.2 + - - -
560A ARG* 2.4 46.5 + - - +
561A GLU* 2.7 24.4 + - - +
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Residues in contact with GLN 557 (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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537A LEU* 4.2 22.5 - - + +
538A PHE* 4.8 7.1 - - - -
552A SER 3.0 16.1 - - - +
553A VAL* 3.4 8.4 - - + -
554A SER* 2.7 47.3 + - - +
556A SER* 1.3 78.3 + - - +
558A PHE* 1.3 59.7 + - - +
561A GLU* 4.1 32.5 + - - +
570A PHE* 4.1 13.5 + - - +
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Residues in contact with PHE 558 (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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480A ALA* 4.5 5.6 - - + -
483A LEU* 4.3 11.4 - - + -
484A TRP* 3.2 33.4 - + + -
507A LEU* 3.6 33.2 - - + -
511A LEU* 4.3 4.0 - - + -
553A VAL* 4.1 8.7 - - + -
554A SER 3.0 12.1 + - - +
555A TRP* 2.9 23.1 + + - +
557A GLN* 1.3 78.4 - - - +
559A ASN* 1.3 65.3 + - + +
560A ARG 4.0 0.2 - - - -
569A THR* 4.0 0.9 - - - -
570A PHE* 3.4 33.7 + + - -
571A TRP* 3.1 65.6 + + + -
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Residues in contact with ASN 559 (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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437A GLU* 5.2 4.8 + - - +
477A ASN* 2.9 24.5 + - - +
480A ALA* 3.2 11.5 - - - +
555A TRP* 2.8 31.8 + - + +
558A PHE* 1.3 86.5 - - + +
560A ARG* 1.3 62.4 + - - +
568A TYR 5.2 3.3 + - - +
569A THR* 3.5 13.3 - - - -
571A TRP* 3.0 35.0 - - - +
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Residues in contact with ARG 560 (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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437A GLU* 5.4 4.0 - - - +
555A TRP* 4.8 9.4 - - + +
556A SER* 2.4 45.2 + - - +
559A ASN 1.3 70.3 - - - +
561A GLU* 1.3 60.2 + - - +
562A ASN* 3.9 2.9 + - - +
569A THR* 4.0 1.5 - - - -
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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